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Chapter 5: The problem of free will and determinism

The problem of free will and determinism

Matthew Van Cleave

“You say: I am not free. But I have raised and lowered my arm. Everyone understands that this illogical answer is an irrefutable proof of freedom.”

-Leo Tolstoy

“Man can do what he wills but he cannot will what he wills.”

-Arthur Shopenhauer

“None are more hopelessly enslaved than those who falsely believe they are free.”

-Johann Wolfgang von Goethe

The term “freedom” is used in many contexts, from legal, to moral, to psychological, to social, to political, to theological. The founders of the United States often extolled the virtues of “liberty” and “freedom,” as well as cautioned us about how difficult they were to maintain. But what do these terms mean, exactly? What does it mean to claim that humans are (or are not) free? Almost anyone living in a liberal democracy today would affirm that freedom is a good thing, but they almost certainly do not all agree on what freedom is. With a concept as slippery as that of free will, it is not surprising that there is often disagreement. Thus, it will be important to be very clear on what precisely we are talking about when we are either affirming or denying that humans have free will. There is an important general point here that extends beyond the issue of free will: when debating whether or not x exists, we must first be clear on defining x, otherwise we will end up simply talking past each other . The philosophical problem of free will and determinism is the problem of whether or not free will exists in light of determinism. Thus, it is crucial to be clear in defining what we mean by “free will” and “determinism.” As we will see, these turn out to be difficult and contested philosophical questions. In this chapter we will consider these different positions and some of the arguments for, as well as objections to, them.

Let’s begin with an example. Consider the 1998 movie, The Truman Show . In that movie the main character, Truman Burbank (played by Jim Carrey), is the star of a reality television show. However, he doesn’t know that he is. He believes he is just an ordinary person living in an ordinary neighborhood, but in fact this neighborhood is an elaborate set of a television show in which all of his friends and acquaintances are just actors. His every moment is being filmed and broadcast to a whole world of fans that he doesn’t know exists and almost every detail of his life has been carefully orchestrated and controlled by the producers of the show. For example, Truman’s little town is surrounded by a lake, but since he has been conditioned to believe (falsely) that he had a traumatic boating accident in which his father died, he never has the desire to leave the small little town and venture out into the larger world (at least at first). So consider the life of Truman as described above. Is he free or not? On the one hand, he gets to do pretty much everything he wants to do and he is pretty happy. Truman doesn’t look like he’s being coerced in any explicit way and if you asked him if he was, he would almost certain reply that he wasn’t being coerced and that he was in charge of his life. That is, he would say that he was free (at least to the same extent that the rest of us would). These points all seem to suggest that he is free. For example, when Truman decides that he would rather not take a boat ride out to explore the wider world (which initially is his decision), he is doing what he wants to do. His action isn’t coerced and does not feel coerced to him. In contrast, if someone holds a gun to my head and tells me “your wallet or your life!” then my action of giving him my wallet is definitely coerced and feels so.

On the other hand, it seems clear the Truman’s life is being manipulated and controlled in a way that undermines his agency and thus his freedom. It seems clear that Truman is not the master of his fate in the way that he thinks he is. As Goethe says in the epigraph at the beginning of this chapter, there’s a sense in which people like Truman are those who are most helplessly enslaved, since Truman is subject to a massive illusion that he has no reason to suspect. In contrast, someone who knows she is a slave (such as slaves in the antebellum South in the United States) at least retains the autonomy of knowing that she is being controlled. Truman seems to be in the situation of being enslaved and not knowing it and it seems harder for such a person to escape that reality because they do not have any desire to (since they don’t know they are being manipulated and controlled).

As the Truman Show example illustrates, it seems there can be reasonable disagreement about whether or not Truman is free. On the one hand, there’s a sense in which he is free because he does what he wants and doesn’t feel manipulated. On the other hand, there’s a sense in which he isn’t free because what he wants to do is being manipulated by forces outside of his control (namely, the producers of the show). An even better example of this kind of thing comes from Aldous Huxley’s classic dystopia, Brave New World . In the society that Huxley envisions, everyone does what they want and no one is ever unhappy. So far this sounds utopic rather than dystopic. What makes it dystopic is the fact that this state of affairs is achieved by genetic and behavioral conditioning in a way that seems to remove any choice. The citizens of the Brave New World do what they want, yes, but they seems to have absolutely no control over what they want in the first place. Rather, their desires are essentially implanted in them by a process of conditioning long before they are old enough to understand what is going on. The citizens of Brave New World do what they want, but they have no control over what the want in the first place. In that sense, they are like robots: they only have the desires that are chosen for them by the architects of the society.

So are people free as long as they are doing what they want to—that is, choosing the act according to their strongest desires? If so, then notice that the citizens of Brave New World would count as free, as would Truman from The Truman Show , since these are both cases of individuals who are acting on their strongest desires. The problem is that those desires are not desires those individuals have chosen. It feels like the individuals in those scenarios are being manipulated in a way that we believe we aren’t. Perhaps true freedom requires more than just that one does what one most wants to do. Perhaps true freedom requires a genuine choice. But what is a genuine choice beyond doing what one most wants to do?

Philosophers are generally of two main camps concerning the question of what free will is. Compatibilists believe that free will requires only that we are doing what we want to do in a way that isn’t coerced—in short, free actions are voluntary actions. Incompatibilists , motivated by examples like the above where our desires are themselves manipulated, believe that free will requires a genuine choice and they claim that a choice is genuine if and only if, were we given the choice to make again, we could have chosen otherwise . I can perhaps best crystalize the difference between these two positions by moving to a theological example. Suppose that there is a god who created the universe, including humans, and who controls everything that goes on in the universe, including what humans do. But suppose that god does this not my directly coercing us to do things that we don’t want to do but, rather, by implanting the desire in us to do what god wants us to do. Thus human beings, by doing what the want to do, would actually be doing what god wanted them to do. According to the compatibilist, humans in this scenario would be free since they would be doing what they want to do. According to the incompatibilist, however, humans in this scenario would not be free because given the desire that god had implanted in them, they would always end up doing the same thing if given the decision to make (assuming that desires deterministically cause behaviors). If you don’t like the theological example, consider a sci-fi example which has the same exact structure. Suppose there is an eccentric neuroscientist who has figured out how to wire your brain with a mechanism by which he can implant desire into you.

Suppose that the neuroscientist implants in you the desire to start collecting stamps and you do so. However, you know none of this (the surgery to implant the device was done while you were sleeping and you are none the wiser).

From your perspective, one day you find yourself with the desire to start collecting stamps. It feels to you as though this was something you chose and were not coerced to do. However, the reality is that given this desire that the neuroscientist implanted in you, you could not have chosen not to have started collecting stamps (that is, you were necessitated to start collecting stamps, given the desire). Again, in this scenario the compatibilist would say that your choice to start collecting stamps was free (since it was something you wanted to do and did not feel coerced to you), but the incompatibilist would say that your choice was not free since given the implantation of the desire, you could not have chosen otherwise.

We have not quite yet gotten to the nub of the philosophical problem of free will and determinism because we have not yet talked about determinism and the problem it is supposed to present for free will. What is determinism?

Determinism is the doctrine that every cause is itself the effect of a prior cause. More precisely, if an event (E) is determined, then there are prior conditions (C) which are sufficient for the occurrence of E. That means that if C occurs, then E has to occur. Determinism is simply the claim that every event in the universe is determined. Determinism is assumed in the natural sciences such as physics, chemistry and biology (with the exception of quantum physics for reasons I won’t explain here). Science always assumes that any particular event has some law-like explanation—that is, underlying any particular cause is some set of law- like regularities. We might not know what the laws are, but the whole assumption of the natural sciences is that there are such laws, even if we don’t currently know what they are. It is this assumption that leads scientists to search for causes and patterns in the world, as opposed to just saying that everything is random. Where determinism starts to become contentious is when we move into the human sciences, such as psychology, sociology, and economics. To illustrate why this is contentious, consider the famous example of Laplace’s demon that comes from Pierre-Simon Laplace in 1814:

We may regard the present state of the universe as the effect of its past and the cause of its future. An intellect which at a certain moment would know all forces that set nature in motion, and all positions of all items of which nature is composed, if this intellect were also vast enough to submit these data to analysis, it would embrace in a single formula the movements of the greatest bodies of the universe and those of the tiniest atom; for such an intellect nothing would be uncertain and the future just like the past would be present before its eyes.

Laplace’s point is that if determinism were true, then everything that every happened in the universe, including every human action ever undertaken, had to have happened. Of course humans, being limited in knowledge, could never predict everything that would happen from here out, but some being that was unlimited in intelligence could do exactly that. Pause for a moment to consider what this means. If determinism is true, then Laplace’s demon would have been able to predict from the point of the big bang, that you would be reading these words on this page at this exact point of time. Or that you had what you had for breakfast this morning. Or any other fact in the universe. This seems hard to believe, since it seems like some things that happen in the universe didn’t have to happen. Certain human actions seem to be the paradigm case of such events. If I ate an omelet for breakfast this morning, that may be a fact but it seems strange to think that this fact was necessitated as soon as the big bang occurred. Human actions seem to have a kind of independence from web of deterministic web of causes and effects in a way that, say, billiard balls don’t.

Given that the cue ball his the 8 ball with a specific velocity, at a certain angle, and taking into effect the coefficient of friction of the felt on the pool table, the exact location of the 8 ball is, so to speak, already determined before it ends up there. But human behavior doesn’t seem to be like the behavior of the 8 ball in this way, which is why some people think that the human sciences are importantly different than the natural sciences. Whether or not the human sciences are also deterministic is an issue that helps distinguish the different philosophical positions one can take on free will, as we will see presently. But the important point to see right now is that determinism is a doctrine that applies to all causes, including human actions. Thus, if some particular brain state is what ultimately caused my action and that brain state itself was caused by a prior brain state, and so on, then my action had to occur given those earlier prior events. And that entails that I couldn’t have chosen to act otherwise, given that those earlier events took place . That means that the incompatibilist position on free will cannot be correct if determinism is true. Recall that incompatibilism requires that a choice is free only if one could have chosen differently, given all the same initial conditions. But if determinism is true, then human actions are no different than the 8 ball: given what has come before, the current event had to happen. Thus, if this morning I cooked an omelet, then my “choice” to make that omelet could not have been otherwise. Given the complex web of prior influences on my behavior, my making that omelet was determined. It had to occur.

Of course, it feels to us, when contemplating our own futures, that there are many different possible ways our lives might go—many possible choices to be made. But if determinism is true, then this is an illusion. In reality, there is only one way that things could go, it’s just that we can’t see what that is because of our limited knowledge. Consider the figure below. Each junction in the figure below represents a decision I make and let’s suppose that some (much larger) decision tree like this could represent all of the possible ways my life could go. At any point in time, when contemplating what to do, it seems that I can conceive of my life going many different possible ways. Suppose that A represents one series of choices and B another. Suppose, further, that A represents what I actually do (looking backwards over my life from the future). Although from this point in time it seems that I could also have made the series of choices represented in B, if determinism is true then this is false. That is, if A is what ends up happening, then A is the only thing that ever could have happened . If it hasn’t yet hit you how determinism conflicts with our sense of our own possibilities in life, think about that for a second.

image

As the foregoing I hope makes clear, the incompatibilist definition of free will is incompatibile with determinism (that’s why it’s called “incompatibilist”). But that leaves open the question of which one is true. To say that free will and determinism are logically incompatible is just to say that they cannot both be true, meaning that one or the other must be false. But which one? Some will claim that it is determinism which is false. This position is called libertarianism (not to be confused with political libertarianism, which is a totally different idea). Others claim that determinism is true and that, therefore, there is no free will. This position is called hard determinism. A third type of position, compatibilism , rejects the incompatibilist definition of freedom and claims that free will and determinism are compatible (hence the name). The table below compares these different positions. But which one is correct? In the remainder of the chapter we will consider some arguments for and against these three positions on free will and determinism.

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Libertarianism

Both libertarianism and hard determinism accept the following proposition: If determinism is true, then there is no free will. What distinguishes libertarianism from hard determinism is the libertarian’s claim that there is free will. But why should we think this? This question is especially pressing when we recognize that we assume a deterministic view in many other domains in life. When you have a toothache, we know that something must have caused that toothache and whatever cause that was, something else must have caused that cause. It would be a strange dentist who told you that your toothache didn’t have a cause but just randomly occurred. When the weather doesn’t go as the meteorologist predicts, we assume there must be a cause for why the weather did what it did. We might not ever know the cause in all its specific details, but assume there must be one. In cases like meteorology, when our scientific predictions are wrong, we don’t always go back and try to figure out what the actual causes were—why our predictions were wrong. But in other cases we do. Consider the explosion of the Space Shuttle Challenger in 1986. Years later it was finally determined what led to that explosion (“O-ring” seals that were not designed for the colder condition of the launch). There’s a detailed deterministic physical explanation that one could give of how the failure of those O-rings led to the explosion of the Challenger. In all of these cases, determinism is the fundamental assumption and it seems almost nothing could overturn it.

But the libertarian thinks that the domain of human action is different than every other domain. Humans are somehow able to rise above all of the influences on them and make decisions that are not themselves determined by anything that precedes them. The philosopher Roderick Chisholm accurately captured the libertarian position when he claimed that “we have a prerogative which some would attribute only to God: each of us, when we really act, is a prime mover unmoved. In doing what we do, we cause certain events to happen, and nothing and no one, except we ourselves, causes us to cause those events to happen” (Chisholm, 1964). But why should we think that we have such a godlike ability? We will consider two arguments the libertarian makes in support of her position: the argument from intuitions and the argument from moral responsibility.

The argument from intuitions is based on the very strong intuition that there are some things that we have control over and that nothing causes us to do those things except for our own willing them. The strongest case for this concerns very simple actions, such as moving one’s finger. Suppose that I hold up my index finger and say that I am going to move it to the right or the to the left, but that I have not yet decided which way to move it. At the moment before I move my finger one way or the other, it truly seems to me that my future is open.

Nothing in my past and nothing in my present seems to be determining me to move my finger to the right or to the left. Rather, it seems to me that I have total control over what happens next. Whichever way I move my finger, it seems that I could have moved it the other way. So if, as a matter of fact, I move my finger to the right, it seems unquestionably true that I could have moved it to the left (and vice versa, mutatis mutandis ). Thus, in cases of simple actions like moving my finger to the right or left, it seems that the strong incompatibilist definition of freedom is met: we have a very strong intuition that no matter what I actually did, I could have chosen otherwise, were I to be given that exact choice again . The libertarian does not claim that all human actions are like this. Indeed, many of our actions (perhaps even ones that we think are free) are determined by prior causes. The libertarian’s claim is just that at least some of our actions do meet the incompatibilist’s definition of free and, thus, that determinism is not universally true.

The argument from moral responsibility is a good example of what philosophers call a transcendental argument . Transcendental arguments attempt to establish the truth of something by showing that that thing is necessary in order for something else, which we strongly believe to be true, to be true. So consider the idea that normally developed adult human beings are morally responsible for their actions. For example, if Bob embezzles money from his charity in order to help pay for a new sports car, we would rightly hold Bob accountable for this action. That is, we would punish Bob and would see punishment as appropriate. But a necessary condition of holding Bob responsible is that Bob’s action was one that he chose, one that he was in control of, one that he could have chosen not to do. Philosophers call this principle ought implies can : if we say that someone ought (or ought not) do something, this implies that they can do it (that is, they are capable of doing it). The ought implies can principle is consistent with our legal practices. For example, in cases where we believe that a person was not capable of doing the right thing, we no longer hold them morally or criminally liable. A good example of this within our legal system is the insanity defense: if someone was determined to be incapable of appreciating the difference between right and wrong, we do not find them guilty of a crime. But notice what determinism would do to the ought implies can principle. If everything we ever do had to happen (think Laplace’s demon), that means that Bob had to embezzle those funds and buy that sports car. The universe demanded it. That means he couldn’t not have done those things. But if that is so, then, by the ought implies can principle, we cannot say that he ought not to have done those things. That is, we cannot hold Bob morally responsible for those things. But this seems absurd, the libertarian will say.

Surely Bob was responsible for those things and we are right to hold him responsible. But the only we way can reasonably do this is if we assume that his actions were chosen—that he could have chosen to do otherwise than he in fact chose. Thus, determinism is incompatible with the idea that human beings are morally responsible agents. The practice of holding each other to be morally responsible agents doesn’t make sense unless humans have incompatibilist free will—unless they could have chosen to do otherwise than they in fact did. That is the libertarian’s transcendental argument from moral responsibility.

Hard determinism

Hard determinism denies that there is free will. The hard determinist is a “tough-minded” individual who bravely accepts the implication of a scientific view of the world. Since we don’t in general accept that there are causes that are not themselves the result of prior causes, we should apply this to human actions too. And this means that humans, contrary to what they might believe (or wish to believe) about themselves, do not have free will. As noted above, hard determininsm follows from accepting the incompatibilist definition of free will as well as the claim that determinism is universally true. One of the strongest arguments in favor of hard determinism is based on the weakness of the libertarian position. In particular, the hard determinist argues that accepting the existence of free will leaves us with an inexplicable mystery: how can a physical system initiate causes that are not themselves caused?

If the libertarian is right, then when an action is free it is such that given exactly the same events leading up to one’s action, one still could have acted otherwise than they did. But this seems to require that the action/choice was not determined by any prior event or set of events. Consider my decision to make a cheese omelet for breakfast this morning. The libertarian will say that my decision to make the cheese omelet was not free unless I could have chosen to do otherwise (given all the same initial conditions). But that means that nothing was determining my decision. But what kind of thing is a decision such that it causes my actions but is not itself caused by anything? We do not know of any other kind of thing like this in the universe. Rather, we think that any event or thing must have been caused by some (typically complex) set of conditions or events. Things don’t just pop into existence without being caused . That is as fundamental a principle as any we can think of. Philosophers have for centuries upheld the principle that “nothing comes from nothing.” They even have a fancy Latin phrase for it: ex nihilo nihil fir [1] . The problem is that my decision to make a cheese omelet seems to be just that: something that causes but is not itself caused. Indeed, as noted earlier, the libertarian Roderick Chisholm embraces this consequence of the libertarian position very clearly when he claimed that when we exercise our free will,

“we have a prerogative which some would attribute only to God: each of us, when we really act, is a prime mover unmoved. In doing what we do, we cause certain events to happen, and nothing and no one, except we ourselves, causes us to cause those events to happen” (Chisholm, 1964).

How could something like this exist? At this point the libertarian might respond something like this:

I am not claiming that something comes from nothing; I am just claiming that our decisions are not themselves determined by any prior thing. Rather, we ourselves, as agents, cause our decisions and nothing else causes us to cause those decisions (at least in cases where we have acted freely).

However, it seems that the libertarian in this case has simply pushed the mystery back one step: we cause our decisions, granted, but what causes us to make those decisions? The libertarian’s answer here is that nothing causes us. But now we have the same problem again: the agent is responsible for causing the decision but nothing causes the agent to make that decision. Thus we seem to have something coming from nothing. Let’s call this argument the argument from mysterious causes. Here’s the argument in standard form:

  • The existence of free will implies that when an agent freely decides to do something, the agent’s choice is not caused (determined) by anything.
  • To say that something has no cause is to violate the ex nihilo nihil fit principle.
  • But nothing can violate the ex nihilo nihil fit principle.
  • Therefore, there is no free will (from 1-3)

The hard determinist will make a strong case for premise 3 in the above argument by invoking basic scientific principles such as the law of conservation of energy, which says that the amount of energy within a closed system stays that same. That is, energy cannot be created or destroyed. Consider a billiard ball. If it is to move then it must get the required energy to do so from someplace else (typically another billiard ball knocking into it, the cue stick hitting it or someone tilting the pool table). To allow that something could occur without any cause—in this case, the agent’s decision—would be a violation of the conservation of energy principle, which is as basic a scientific principle as we know. When forced to choose between uphold such a basic scientific principle as this and believing in free will, the hard determinist opts for the former. The hard determinist will put the ball in the libertarian’s court to explain how something could come from nothing.

I will close this section by indicating how these problems in philosophy often ramify into other areas of philosophy. In the first place, there is a fairly common way that libertarians respond to the charge that their view violates basic principles such as ex nihilo nihil fit and, more specifically, the physical law of conservation of energy. Libertarians could claim that the mind is not physical—a position known in the philosophy of mind as “substance dualism” (see philosophy of mind chapter in this textbook for more on substance dualism). If the mind isn’t physical, then neither are our mental events, such our decisions.

Rather, all of these things are nonphysical entities. If decisions are nonphysical entities, there is at least no violation of the physical laws such as the law of conservation of energy. [2] Of course, if the libertarian were to take this route of defending her position, she would then need to defend this further assumption (no small task). In any case, my main point here is to see the way that responses to the problem of free well and determinism may connect with other issue within philosophy. In this case, the libertarian’s defense of free will may turn out to depend on the defensibility of other assumptions they make about the nature of the mind. But the libertarian is not the only one who will need to ultimately connect her account of free will up with other issues in philosophy. Since hard determinists deny that free will exists, it seems that they will owe us some account of moral responsibility. If, moral responsibility requires that humans have free will (see previous section), then in denying free will we seem to also be denying that humans have moral responsibility. Thus, hard determinists will face the objection that in rejecting free will they also destroy moral responsibility.

But since it seems we must hold individuals morally to account for certain actions (such as the embezzler from the previous section), the hard determinist

needs some account of how it makes sense to do this given that human being don’t have free will. My point here is not to broach the issue of how the hard determinist might answer this, but simply to show how hard determinist’s position on the problem of free will and determinism must ultimately connect with other issues in philosophy, such issues in metaethics [3] . This is a common thing that happens in philosophy. We may try to consider an issue or problem in isolation, but sooner or later that problem will connect up with other issues in philosophy.

Compatibilism

The best argument for compatibilism builds on a consideration of the difficulties with the incompatibilist definition of free will (which both the libertarian and the hard determinist accept). As defined above, compatibilists agree with the hard determinists that determinism is true, but reject the incompatibilist definition of free will that hard determinists accept. This allows compatbilists to claim that free will is compatible with determinism. Both libertarians and hard compatibilists tend to feel that this is somehow cheating, but the compatibilist attempts to convince us arguing that the strong incompatibilist definition of freedom is problematic and that only the weaker compatibilist definition of freedom—free actions are voluntary actions—will work. We will consider two objections that the compatibilist raises for the incompatibilist definition of freedom: the epistemic objection and the arbitrariness objection . Then we will consider the compatibilist’s own definition of free will and show how that definition fits better with some of our common sense intuitions about the nature of free actions.

The epistemic objection is that there is no way for us to ever know whether any one of our actions was free or not. Recall that the incompatibilist definition of freedom says that a decision is free if and only if I could have chosen otherwise than I in fact chose, given exactly all the same conditions. This means that if we were, so to speak, rewind the tape of time and be given that decision to make over again, we could have chosen differently. So suppose the question is whether my decision to make a cheese omelet for breakfast was free. To answer this question, we would have to know when I could have chosen differently. But how am I supposed to know that ? It seems that I would have to answer a question about a strange counterfactual : if given that decision to make over again, would I choose the same way every time or not? How on earth am I supposed to know how to answer that question? I could say that it seems to me that I could make a different decision regarding making the cheese omelet (for example, I could have decided to eat cereal instead), but why should I think that that is the right answer? After all, how things seem regularly turn out to be not the case—especially in science. The problem is that I don’t seem to have any good way of answering this counterfactual question of what I would choose if given the same decision to make over again. Thus the epistemic objection [4] is that since I have no way of knowing whether I would/wouldn’t make the same decision again, I can never know whether any of my actions are free.

The arbitrariness objection is that it turns our free actions into arbitrary actions. And arbitrary actions are not free actions. To see why, consider that if the incompatibilist definition is true, then nothing determines our free choices, not even our own desires . For if our desires were determining our choices then if we were to rewind the tape of time and, so to speak, reset everything— including our desires —the same way, then given those same desires we would choose the same way every time. And that would mean our choice was not free, according to the incompatbilist. It is imperative to remember that incompatibilism says that if an action is not free if it is determined ( including if it is determined by our own desires ). But now the question is: if my desires are not causing my decision, what is? When I make a decision, where does that decision come from, if not from my desires and beliefs? Presumably it cannot come from nothing ( ex nihilo nihil fit ). The problem is that if the incompatibilist rejects that anything is causing my decisions, then how can my decisions be anything but arbitrary?

Presumably an arbitrary decision—a decision not driven by any reason at all—is not an exercise of my freedom. Freedom seems to require that we are exercising some kind of control over my actions and decisions. If my action or decision is arbitrary that means that no reason or explanation of the action/decision can be given. Here’s the arbitrariness objection cast as a reductio ad absurdum argument:

  • A free choice is one that isn’t determined by anything, including our desires. [incompatibilist definition of freedom]
  • If our own desires are not determining our choices, then those choices are arbitrary.
  • If a choice is arbitrary then it is not something over which we have control
  • If a choice isn’t something over which we have control, then it isn’t a free choice
  • Therefore, a free choice is not a free choice (from 1-4)

A reductio ad absurdum argument is one that starts with a certain assumption and then derives a contradiction from that assumption, thereby showing that assumption must be false. In this case, the incompatibilist’s definition of a free choice leads to the contradiction that something that is a free choice isn’t a free choice.

What has gone wrong here? The compatibilist will claim that what has gone wrong is incompatibilist’s idea that a free action must be one that isn’t caused/determined by anything. The compatibilist claims that free actions can still be determined, as long as what is determining them is our own internal reasons, over which we have some control, rather than external things over which we have no control. Free choices, according to the compatibilist, are just choices that are caused by our own best reasons . The fact that, given the exact same choices, I couldn’t have chosen otherwise doesn’t undermine what freedom is (as the incompatibilist claims) but defines what it is. Consider an example. Suppose that my goal is to spend the shortest amount of time on my commute home from work so that I can be on time for a dinner date. Also suppose, for simplicity, that there are only three possible routes that I can take: route 1 is the shortest, whereas route 2 is longer but scenic and 3 is more direct but has potentially more traffic, especially during rush hour. I am leaving early from work today so that I can make my dinner date but before I leave, I check the traffic and learn that there has been a wreck on route 1. Thus, I must choose between routes 2 and 3. I reason that since I am leaving earlier, route 3 will be the quickest since there won’t be much traffic while I’m on my early commute home. So I take route 3 and arrive home in a timely manner: mission accomplished. The compatibilist would say that this is a paradigm case of a free action (or a series of free actions). The decisions I made about how to get home were drive both by my desire to get home quickly and also by the information I was operating with. Assuming that that information was good and I reasoned well with it and was thereby able to accomplish my goal (that is, get home in a timely manner), then my action is free. My action is free not because my choices were undetermined, but rather because my choices were determined (caused) by my own best reasons—that is, by my desires and informed beliefs. The incompatibilist, in contrast, would say that an action is free only if I could have chosen otherwise, given all the same conditions again. But think of what that would mean in the case above! Why on earth would I choose routes 1 or 2 in the above scenario, given that my most pressing goal is to be able to get to my dinner date on time? Why would anyone knowingly choose to do something that thwarts their primary goals? It doesn’t seem that, given the set of beliefs and desires that I actually had at the time, I could have chosen otherwise in that situation. Of course, if you change the information I had (my beliefs) or you change what I wanted to accomplish (my desires), then of course I could have acted otherwise than I did. If I didn’t have anything pressing to do when I left work and wanted a scenic and leisurely drive home in my new convertible, then I probably would have taken route 2! But that isn’t what the incompatibilist requires for free will. As we’ve seen, they require the much stronger condition that one’s action be such that it could have been different even if they faced exactly the same condition over again. But in this scenario that would be an irrational thing to do. Of course, if one’s goal were to be irrational and to thwart one’s own desires, I suppose they could do that. But that would still seem to be acting in accordance with one’s desires.

Many times free will is treated as an all or nothing thing, either humans have it or they don’t. This seems to be exactly how the libertarian and hard determinist see the matter. And that makes sense given that they are both incompatibilists and view free will and determinism like oil and water—they don’t mix. But it is interesting to note that it is common for us to talk about decisions, action, or even whole lives (or periods of a life) as being more or less free . Consider the Goethe quotation at the beginning of this chapter: “none are more enslaved than those who falsely believe they are free.” Here Goethe is conceiving of freedom as coming in degrees and claiming that those who think they are free but aren’t as less free than those who aren’t free and know it. But this way of speaking implies that free will and determinism are actually on a continuum rather than a black and white either or. The compatibilist can build this fact about our ordinary ways of speaking about freedom into an argument for their position. Call this the argument from ordinary language . The argument from ordinary language is that only compatibilism is able to accommodate our common way of speaking about freedom coming in degrees—that is, as actions or decisions being more or less free. The libertarian can’t account for this since the libertarian sees freedom as an all or nothing matter: if you couldn’t have done otherwise then your action was not truly free; if you could have done otherwise, then it was. In contrast, the compatibilist is able to explain the difference between more/less free action on the continuum. For the compatibilist, the freest actions are those in which one reasons well with the best information, thus acting for one’s own best reasons, thus furthering one’s interests. The least free actions are those in which one lacks information and reason poorly, thus not acting for one’s own best reasons, thus not furthering one’s interests. Since reasoning well, being informed, and being reflective are all things that come in degrees (since one can possess these traits to a greater or lesser extent) and since these attribute define what free will is for the compatibilist, it follows that free will comes in degrees. And that means that the compatibilist is able to make sense or a very common way that we talk about freedom (as coming in degrees) and thus make sense of ourselves, whereas the libertarian isn’t.

There’s one further advantage that compatibilists can claim over libertarians. Libertarians defend the claim that there are at least some cases where one exercises one’s free will and that this entails that determinism is false. However, this leaves totally open the extent of human free will. Even if it were true that there are at least some cases where humans exercise free will, there might not be very many instances and/or those decisions in which we exercise free will might be fairly trivial (for example, moving one’s finger to the left or right). But if it were to turn out that free will was relatively rare, then even if the libertarian were correct that there are at least some instances where we exercise free will, it would be cold comfort to those who believe in free will. Imagine: if there were only a handful of cases in your life where your decision was an exercise of your free will, then it doesn’t seem like you have lived a life which was very free. In other words, in such a case, for all practical purposes, determinism would be true.

Thus, it seems like the question of how widespread free will is is an important one. However, the libertarian seems unable to answer it for reasons that we’ve already seen. Answering the question requires knowing whether or not one could have acted otherwise than one in fact did. But in order to know this, we’d have to know how to answer a strange counterfactual—whether I could have acted differently given all the same conditions. As noted earlier (“the epistemic objection”), this raises a tough epistemological question for the libertarian: how could he ever know how to answer this question? And so how could he ever know whether a particular action was free or not? In contrast, the compatibilist can easily answer the question of how widespread free will is: how “free” one’s life is depends on the extent to which one’s actions are driven by their own best reasons. And this, in turn, depends on factors such as how well-informed, reflective, and reasonable a person is. This might not always be easy to determine, but it seems more tractable than trying to figure out the truth conditions of the libertarian’s counterfactual.

In short, it seems that compatibilism has significant advantages over both libertarianism and hard determinism. As compared to the libertarian, compatibilism gives a better answer to how free will can come in degrees as well as how widespread free will is. It also doesn’t face the arbitrariness objection or the epistemic objection. As compared to the hard determinist, the compatibilist is able to give a more satisfying answer to the moral responsibility issue. Unlike the hard determinist, who sees all action as equally determined (and so not under our control), the compatibilist thinks there is an important distinction within the class of human actions: those that are under our control versus those that aren’t. As we’ve seen above, the compatibilist doesn’t see this distinction as black and white, but, rather, as existing on a continuum. However, a vague boundary is still a boundary. That is, for the compatibilist there are still paradigm cases in which a person has acted freely and thus should be held morally responsible for that action (for example, the person who embezzles money from a charity and then covers it up) and clear cases in which a person hasn’t acted freely (for example, the person who was told to do something by their boss but didn’t know that it was actually something illegal). The compatibilist’s point is that this distinction between free and unfree actions matters, both morally and legally, and that we would be unwise to simply jettison this distinction, as the hard determinist does. We do need some distinction within the class of human actions between those for which we hold people responsible and those for which we don’t. The compatibilist’s claim is that they are able to do with while the hard determinist isn’t. And they’re able to do it without inheriting any of the problems of the libertarian position.

Study questions

  • True or false: Compatibilists and libertarians agree on what free will is (on the concept of free will).
  • True or false: Hard determinists and libertarians agree that an action is free only when I could have chosen otherwise than I in fact chose.
  • True or false: the libertarian gives a transcendental argument for why we must have free will.
  • True or false: both compatibilists and hard determinists believe that all human actions are determined.
  • True or false: compatibilists see free will as an all or nothing matter: either an action is free or it isn’t; there’s no middle ground.
  • True or false: compatibilists think that in the case of a truly free action, I could have chosen otherwise than I in fact did choose.
  • True or false: One objection to libertarianism is that on that view it is difficult to know when a particular action was free.
  • True or false: determinism is a fundamental assumption of the natural sciences (physics, chemistry, biology, and so on).
  • True or false: the best that support the libertarian’s position are cases of very simple or arbitrary actions, such as choosing to move my finger to the left or to the right.
  • True or false: libertarians thinks that as long as my choices are caused by my desires, I have chosen freely.

For deeper thought

  • Consider the Shopenhauer quotation at the beginning of the chapter. Which of the three views do you think this supports and why?
  • Consider the movie The Truman Show . How would the libertarian and compatibilist disagree regarding whether or not Truman has free will?
  • Consider the Tolstoy quote at the beginning of the chapter. Which of the three views does this support and why?
  • Consider a child being raised by white supremacist parents who grows up to have white supremacist views and to act on those views. As a child, does this individual have free will? As an adult, do they have free will? Defend your answer with reference to one of the three views.
  • Consider the eccentric neuroscientist example (above). How might a compatibilist try to show that this isn’t really an objection to her view? That is, how might the compatibilist show that this is not a case in which the individual’s action is the result of a well-informed, reflective choice?
  • Actually, the phrase was originally a Latin phrase, not an English one because at the time in Medieval Europe philosophers wrote in Latin. ↵
  • On the other hand, if these nonphysical decisions are supposed to have physical effects in the world (such as causing our behaviors) then although there is no problem with the agent’s decision itself being uncaused, there would still be a problem with how that decision can be translated into the physical world without violating the law of conservation of energy. ↵
  • One well-known and influential attempt to reconcile moral responsibility with determinism is P.F. Strawson’s “Freedom and Resentment” (1962). ↵
  • The term “epistemic” just denotes something relating to knowledge. It comes from the Greek work episteme, which means knowledge or belief. ↵

Introduction to Philosophy Copyright © by Matthew Van Cleave is licensed under a Creative Commons Attribution 4.0 International License , except where otherwise noted.

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Freewill vs Determinism In Psychology

Saul McLeod, PhD

Editor-in-Chief for Simply Psychology

BSc (Hons) Psychology, MRes, PhD, University of Manchester

Saul McLeod, PhD., is a qualified psychology teacher with over 18 years of experience in further and higher education. He has been published in peer-reviewed journals, including the Journal of Clinical Psychology.

Learn about our Editorial Process

Olivia Guy-Evans, MSc

Associate Editor for Simply Psychology

BSc (Hons) Psychology, MSc Psychology of Education

Olivia Guy-Evans is a writer and associate editor for Simply Psychology. She has previously worked in healthcare and educational sectors.

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The free will vs. determinism debate revolves around how our behavior results from forces over which we have no control or whether people can decide to act or behave in a certain way.

Determinism

The determinist approach proposes that all behavior has a cause and is thus predictable. Free will is an illusion, and our behavior is governed by internal or external forces over which we have no control.

External Determinism

External (environmental) determinism sees the cause of behavior as being outside the individual, such as parental influence, the media, or school. Approaches that adopt this position include behaviorism and social learning theory .

For example, Bandura (1961) showed that children become aggressive through observation and imitation of their violent parents.

Internal Determinism

The other main supporters of determinism are those who adopt a biological perspective .

However, for them, it is internal, not external, forces that are the determining factor. According to sociobiology , evolution governs the behavior of a species and the genetic inheritance that of each individual within it.

For example, Bowlby (1969) states a child has an innate (i.e., inborn) need to attach to one main attachment figure (i.e., monotropy).

Personality traits like extraversion or neuroticism and the behavior associated with them are triggered by neurological and hormonal processes within the body. There is no need for the concept of an autonomous human being.

Ultimately this view sees us as no more than biological machines, and even consciousness itself is interpreted as a level of arousal in the nervous system.

Psychic Determinism

Freud also viewed behavior as being controlled from inside the individual through unconscious motivation or childhood events, known as psychic determinism.

Freud used this principle to explain phenomena like slips of the tongue (“Freudian slips”), dreams, and symptoms of mental disorders, arguing that they all have meaningful explanations rooted in the individual’s unconscious mind.

Different levels of determinism

Hard determinism.

Hard determinism sees free will as an illusion and believes that every event and action has a cause.

Behaviorists are strong believers in hard determinism. Their most forthright and articulate spokesman has been B. F. Skinner. Concepts like “free will” and “motivation” are dismissed as illusions that disguise the real causes of human behavior.

In Skinner’s scheme of things, the person who commits a crime has no real choice. (S)he is propelled in this direction by environmental circumstances and a personal history, which makes breaking the law natural and inevitable.

For the law-abiding, an accumulation of reinforcers has the opposite effect. Having been rewarded for following rules in the past, the individual does so in the future. There is no moral evaluation or even mental calculation involved. All behavior is under stimulus control.

Soft Determinism

Soft determinism represents a middle ground, people do have a choice, but that choice is constrained by external or internal factors.

For example, being poor doesn’t make you steal, but it may make you more likely to take that route through desperation.

Soft determinism suggests that some behaviors are more constrained than others and that there is an element of free will in all behavior.

However, a problem with determinism is that it is inconsistent with society’s ideas of responsibility and self-control that form the basis of our moral and legal obligations.

An additional limitation concerns the fact that psychologists cannot predict a person’s behavior with 100% accuracy due to the complex interaction of variables that can influence behavior.

Free will is the idea that we are able to have some choice in how we act and assumes that we are free to choose our behavior. In other words, we are self-determined.

For example, people can make a free choice as to whether to commit a crime or not (unless they are a child or they are insane).

This does not mean that behavior is random, but we are free from the causal influences of past events. According to free will a person is responsible for their own actions.

One of the main assumptions of the humanistic approach is that humans have free will; not all behavior is determined. Personal agency is the humanistic term for the exercise of free will. Personal agency refers to the choices we make in life, the paths we go down, and their consequences.

For humanistic psychologists such as Maslow (1943) and Rogers (1951), freedom is not only possible but also necessary if we are to become fully functional human beings. Both see self-actualization as a unique human need and form of motivation setting us apart from all other species. There is, thus, a line to be drawn between the natural and the social sciences.

To take a simple example, when two chemicals react, there is no sense in imagining that they could behave in any other way than the way they do. However, when two people come together, they could agree, fall out, come to a compromise, start a fight, and so on.

The permutations are endless, and in order to understand their behavior, we would need to understand what each party to the relationship chooses to do.

Ranged against the deterministic psychologies of those who believe that what “is” is inevitable are, therefore, those who believe that human beings have the ability to control their own destinies. However, there is also an intermediate position that goes back to the psychoanalytic psychology of Sigmund Freud .

At first sight, Freud seems to be a supporter of determinism in that he argued that our actions and our thoughts are controlled by the unconscious . However, the very goal of therapy was to help the patient overcome that force. Indeed without the belief that people can change therapy itself makes no sense.

This insight has been taken up by several neo-Freudians. One of the most influential has been Erich Fromm (1941). In “Fear of Freedom,” he argues that all of us have the potential to control our own lives but that many of us are too afraid to do so.

As a result, we give up our freedom and allow our lives to be governed by circumstances, other people, political ideologies, or irrational feelings. However, determinism is not inevitable, and in the very choice we all have to do good, or evil, Fromm sees the essence of human freedom.

Critical Evaluation

Psychologists who take the free will view suggest that determinism removes freedom and dignity and devalues human behavior.

By creating general laws of behavior, deterministic psychology underestimates the uniqueness of human beings and their freedom to choose their own destiny.

There are important implications for taking either side in this debate. Deterministic explanations for behavior reduce individual responsibility.

A person arrested for a violent attack, for example, might plead that they were not responsible for their behavior – it was due to their upbringing, a bang on the head they received earlier in life, recent relationship stresses, or a psychiatric problem. In other words, their behavior was determined.

The deterministic approach also has important implications for psychology as a science. Scientists are interested in discovering laws that can then be used to predict events. This is very easy to see in physics, chemistry, and biology.

As a science, psychology attempts the same thing – to develop laws, but this time to predict behavior. If we argue against determinism, we are, in effect, rejecting the scientific approach to explaining behavior

Mental illnesses appear to undermine the concept of free will. For example, individuals with OCD lose control of their thoughts and actions, and people with depression lose control over their emotions.

Clearly, a pure deterministic or free will approach does not seem appropriate when studying human behavior. Most psychologists use the concept of free will to express the idea that behavior is not a passive reaction to forces but that individuals actively respond to internal and external forces.

The term soft determinism is often used to describe this position, whereby people do have a choice, but their behavior is always subject to some form of biological or environmental pressure.

Bandura, A. Ross, D., & Ross,S.A (1961). Transmission of aggression through the imitation of aggressive models. Journal of Abnormal and Social Psychology , 63, 575-582

Bowlby, J. (1969). Attachment. Attachment and Loss: Vol. 1. Loss . New York: Basic Books.

Chorney, M. J., Chorney, K., Seese, N., Owen, M. J., Daniels, J., McGuffin, P., … & Plomin, R. (1998). A quantitative trait locus associated with cognitive ability in children. Psychological Science , 9(3), 159-166.

Fromm, E. (1941). Escape from freedom.

Maslow, A. H. (1943). A Theory of Human Motivation. Psychological Review , 50(4), 370-96.

Rogers, C. (1951). Client-centered Therapy: Its Current Practice, Implications and Theory . London: Constable.

Skinner, B. F. (1957). Verbal behavior . Acton, MA: Copley Publishing Group.

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Free Will Vs Determinism

This essay will delve into the philosophical debate between free will and determinism. It will define each concept and explore the arguments and theories supporting both viewpoints. The piece will discuss the implications of this debate in various fields such as psychology, ethics, and law, and how it shapes our understanding of human behavior and responsibility. PapersOwl offers a variety of free essay examples on the topic of Free Will.

How it works

Do people have a choice with how they live their lives or is all of it already determined for them? There has always been a debate in philosophy between free will and determinism . The issue there is whether humans should be thought of as free to choose their actions and the way they live their lives or whether they are determined by forces beyond their control. Then, if life is already determined for people, should people be held responsible for their actions? Free will and determinism are two different concepts that can be used to explain the world around us.

Free will is the ability to choose between different possible courses of action. Free will is the concept of moral responsibility, right, wrong, and other judgments which apply to actions that are freely chosen. It is also connected with the concepts of advice, persuasion. Traditionally, only actions that are freely willed are seen as deserving credit or blame. There are numerous different concerns about threats to the possibility of free will, by how exactly is it conceived. Some conceive free will to be the capacity to make choices in which the outcome has not been determined by past events.

Determinism on the other hand is the belief that all events are determined completely by previously existing causes. The opposite of determinism is some kind of randomness that just happens without any type of plan. Determinism often goes against free will. If determinism is true then events, including moral choices, are completely determined by previously existing causes. So, the question is should people be held responsible for their actions since it was destined to be that way? To answer that I think that if you were determined to do such things then you should also be held responsible for your actions. Being held responsible for your actions plays a role in moral responsibility. Being morally responsible means that you deserve praise, blame, reward, or punishment for what you have done, so it is one’s moral obligation. This can be compatible with this so-called adequate determinism . Moral responsibility requires determinism , so that we could understand the consequences of our actions.

Free will works with God’s plan because although he may have a plan for you, it is your decision on how you will live that life and what you will make of it. We are freely able to choose our actions and the choices we make that determine our outcomes. When it comes to making decisions people are able to thwart the will of God because God allowed people to be able to choose their own fate and what is right or wrong. When working through these issues I try to make the best decision and hope the best comes from it. We are able to make those decisions, so it is up to you to make the right one.

Regarding free will and determinism . Free will is a human value and determinism is a life plan. Whether it be free will or determinism , there is always a choice ready to be made and the outcomes come from the choices we make. Free will is a part of our human nature and we are able to go on with life and act in certain situations independently and having a determined life, it is already predicted for you. Free will or determinism , we are able to have some choice in how we act and we are free to choose our behaviour, so we are self determined when it comes down to it.  

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The term “free will” has emerged over the past two millennia as the canonical designator for a significant kind of control over one’s actions. Questions concerning the nature and existence of this kind of control (e.g., does it require and do we have the freedom to do otherwise or the power of self-determination?), and what its true significance is (is it necessary for moral responsibility or human dignity?) have been taken up in every period of Western philosophy and by many of the most important philosophical figures, such as Plato, Aristotle, Augustine, Aquinas, Descartes, and Kant. (We cannot undertake here a review of related discussions in other philosophical traditions. For a start, the reader may consult Marchal and Wenzel 2017 and Chakrabarti 2017 for overviews of thought on free will, broadly construed, in Chinese and Indian philosophical traditions, respectively.) In this way, it should be clear that disputes about free will ineluctably involve disputes about metaphysics and ethics. In ferreting out the kind of control at stake in free will, we are forced to consider questions about (among others) causation, laws of nature, time, substance, ontological reduction vs emergence, the relationship of causal and reasons-based explanations, the nature of motivation and more generally of human persons. In assessing the significance of free will, we are forced to consider questions about (among others) rightness and wrongness, good and evil, virtue and vice, blame and praise, reward and punishment, and desert. The topic of free will also gives rise to purely empirical questions that are beginning to be explored in the human sciences: do we have it, and to what degree?

Here is an overview of what follows. In Section 1 , we acquaint the reader with some central historical contributions to our understanding of free will. (As nearly every major and minor figure had something to say about it, we cannot begin to cover them all.) As with contributions to many other foundational topics, these ideas are not of ‘merely historical interest’: present-day philosophers continue to find themselves drawn back to certain thinkers as they freshly engage their contemporaries. In Section 2 , we map the complex architecture of the contemporary discussion of the nature of free will by dividing it into five subtopics: its relation to moral responsibility; the proper analysis of the freedom to do otherwise; a powerful, recent argument that the freedom to do otherwise (at least in one important sense) is not necessary for moral responsibility; ‘compatibilist’ accounts of sourcehood or self-determination; and ‘incompatibilist’ or ‘libertarian’ accounts of source and self-determination. In Section 3 , we consider arguments from experience, a priori reflection, and various scientific findings and theories for and against the thesis that human beings have free will, along with the related question of whether it is reasonable to believe that we have it. Finally, in Section 4 , we survey the long-debated questions involving free will that arise in classical theistic metaphysics.

1.1 Ancient and Medieval Period

1.2 modern period and twentieth century, 2.1 free will and moral responsibility, 2.2 the freedom to do otherwise, 2.3 freedom to do otherwise vs. sourcehood accounts, 2.4 compatibilist accounts of sourcehood, 2.5 libertarian accounts of sourcehood, 3.1 arguments against the reality of free will, 3.2 arguments for the reality of free will, 4.1 free will and god’s power, knowledge, and goodness, 4.2 god’s freedom, other internet resources, related entries, 1. major historical contributions.

One finds scholarly debate on the ‘origin’ of the notion of free will in Western philosophy. (See, e.g., Dihle (1982) and, in response Frede (2011), with Dihle finding it in St. Augustine (354–430 CE) and Frede in the Stoic Epictetus (c. 55–c. 135 CE).) But this debate presupposes a fairly particular and highly conceptualized concept of free will, with Dihle’s later ‘origin’ reflecting his having a yet more particular concept in view than Frede. If, instead, we look more generally for philosophical reflection on choice-directed control over one’s own actions, then we find significant discussion in Plato and Aristotle (cf. Irwin 1992). Indeed, on this matter, as with so many other major philosophical issues, Plato and Aristotle give importantly different emphases that inform much subsequent thought.

In Book IV of The Republic , Plato posits rational, spirited, and appetitive aspects to the human soul. The wise person strives for inner ‘justice’, a condition in which each part of the soul plays its proper role—reason as the guide, the spirited nature as the ally of reason, exhorting oneself to do what reason deems proper, and the passions as subjugated to the determinations of reason. In the absence of justice, the individual is enslaved to the passions. Hence, freedom for Plato is a kind of self-mastery, attained by developing the virtues of wisdom, courage, and temperance, resulting in one’s liberation from the tyranny of base desires and acquisition of a more accurate understanding and resolute pursuit of the Good (Hecht 2014).

While Aristotle shares with Plato a concern for cultivating virtues, he gives greater theoretical attention to the role of choice in initiating individual actions which, over time, result in habits, for good or ill. In Book III of the Nicomachean Ethics , Aristotle says that, unlike nonrational agents, we have the power to do or not to do, and much of what we do is voluntary, such that its origin is ‘in us’ and we are ‘aware of the particular circumstances of the action’. Furthermore, mature humans make choices after deliberating about different available means to our ends, drawing on rational principles of action. Choose consistently well (poorly), and a virtuous (vicious) character will form over time, and it is in our power to be either virtuous or vicious.

A question that Aristotle seems to recognize, while not satisfactorily answering, is whether the choice an individual makes on any given occasion is wholly determined by his internal state—perception of his circumstances and his relevant beliefs, desires, and general character dispositions (wherever on the continuum between virtue and vice he may be)—and external circumstances. He says that “the man is the father of his actions as of children”—that is, a person’s character shapes how she acts. One might worry that this seems to entail that the person could not have done otherwise—at the moment of choice, she has no control over what her present character is—and so she is not responsible for choosing as she does. Aristotle responds by contending that her present character is partly a result of previous choices she made. While this claim is plausible enough, it seems to ‘pass the buck’, since ‘the man is the father’ of those earlier choices and actions, too.

We note just a few contributions of the subsequent centuries of the Hellenistic era. (See Bobzien 1998.) This period was dominated by debates between Epicureans, Stoics, and the Academic Skeptics, and as it concerned freedom of the will, the debate centered on the place of determinism or of fate in governing human actions and lives. The Stoics and the Epicureans believed that all ordinary things, human souls included, are corporeal and governed by natural laws or principles. Stoics believed that all human choice and behavior was causally determined, but held that this was compatible with our actions being ‘up to us’. Chrysippus ably defended this position by contending that your actions are ‘up to you’ when they come about ‘through you’—when the determining factors of your action are not external circumstances compelling you to act as you do but are instead your own choices grounded in your perception of the options before you. Hence, for moral responsibility, the issue is not whether one’s choices are determined (they are) but in what manner they are determined. Epicurus and his followers had a more mechanistic conception of bodily action than the Stoics. They held that all things (human soul included) are constituted by atoms, whose law-governed behavior fixes the behavior of everything made of such atoms. But they rejected determinism by supposing that atoms, though law-governed, are susceptible to slight ‘swerves’ or departures from the usual paths. Epicurus has often been understood as seeking to ground the freedom of human willings in such indeterministic swerves, but this is a matter of controversy. If this understanding of his aim is correct, how he thought that this scheme might work in detail is not known. (What little we know about his views in this matter stem chiefly from the account given in his follower Lucretius’s six-book poem, On the Nature of Things . See Bobzien 2000 for discussion.)

A final notable figure of this period was Alexander of Aphrodisias , the most important Peripatetic commentator on Aristotle. In his On Fate , Alexander sharply criticizes the positions of the Stoics. He goes on to resolve the ambiguity in Aristotle on the question of the determining nature of character on individual choices by maintaining that, given all such shaping factors, it remains open to the person when she acts freely to do or not to do what she in fact does. Many scholars see Alexander as the first unambiguously ‘libertarian’ theorist of the will (for more information about such theories see section 2 below).

Augustine (354–430) is the central bridge between the ancient and medieval eras of philosophy. His mature thinking about the will was influenced by his early encounter with late classical Neoplatonist thought, which is then transformed by the theological views he embraces in his adult Christian conversion, famously recounted in his Confessions . In that work and in the earlier On the Free Choice of the Will , Augustine struggles to draw together into a coherent whole the doctrines that creaturely misuse of freedom, not God, is the source of evil in the world and that the human will has been corrupted through the ‘fall’ from grace of the earliest human beings, necessitating a salvation that is attained entirely through the actions of God, even as it requires, constitutively, an individual’s willed response of faith. The details of Augustine’s positive account remain a matter of controversy. He clearly affirms that the will is by its nature a self-determining power—no powers external to it determine its choice—and that this feature is the basis of its freedom. But he does not explicitly rule out the will’s being internally determined by psychological factors, as Chrysippus held, and Augustine had theological reasons that might favor (as well as others that would oppose) the thesis that all things are determined in some manner by God. Scholars divide on whether Augustine was a libertarian or instead a kind of compatibilist with respect to metaphysical freedom. (Macdonald 1999 and Stump 2006 argue the former, Baker 2003 and Couenhoven 2007 the latter.) It is clear, however, that Augustine thought that we are powerfully shaped by wrongly-ordered desires that can make it impossible for us to wholeheartedly will ends contrary to those desires, for a sustained period of time. This condition entails an absence of something more valuable, ‘true freedom’, in which our wills are aligned with the Good, a freedom that can be attained only by a transformative operation of divine grace. This latter, psychological conception of freedom of will clearly echoes Plato’s notion of the soul’s (possible) inner justice.

Thomas Aquinas (1225–1274) attempted to synthesize major strands of Aristotle’s systematic philosophy with Christian theology, and so Aquinas begins his complex discussion of human action and choice by agreeing with Aristotle that creatures such as ourselves who are endowed with both intellect and will are hardwired to will certain general ends ordered to the most general goal of goodness. Will is rational desire: we cannot move towards that which does not appear to us at the time to be good. Freedom enters the picture when we consider various means to these ends and move ourselves to activity in pursuit of certain of them. Our will is free in that it is not fixed by nature on any particular means, and they generally do not appear to us either as unqualifiedly good or as uniquely satisfying the end we wish to fulfill. Furthermore, what appears to us to be good can vary widely—even, over time, intra-personally. So much is consistent with saying that in a given total circumstance (including one’s present beliefs and desires), one is necessitated to will as one does. For this reason, some commentators have taken Aquinas to be a kind of compatibilist concerning freedom and causal or theological determinism. In his most extended defense of the thesis that the will is not ‘compelled’ ( DM 6), Aquinas notes three ways that the will might reject an option it sees as attractive: (i) it finds another option more attractive, (ii) it comes to think of some circumstance rendering an alternative more favorable “by some chance circumstance, external or internal”, and (iii) the person is momentarily disposed to find an alternative attractive by virtue of a non-innate state that is subject to the will (e.g., being angry vs being at peace). The first consideration is clearly consistent with compatibilism. The second at best points to a kind of contingency that is not grounded in the activity of the will itself. And one wanting to read Aquinas as a libertarian might worry that his third consideration just passes the buck: even if we do sometimes have an ability to directly modify perception-coloring states such as moods, Aquinas’s account of will as rational desire seems to indicate that we will do so only if it seems to us on balance to be good to do so. Those who read Aquinas as a libertarian point to the following further remark in this text: “Will itself can interfere with the process [of some cause’s moving the will] either by refusing to consider what attracts it to will or by considering its opposite: namely, that there is a bad side to what is being proposed…” (Reply to 15; see also DV 24.2). For discussion, see MacDonald (1998), Stump (2003, ch. 9) and especially Hoffman & Michon (2017), which offers the most comprehensive analysis of relevant texts to date.

John Duns Scotus (1265/66–1308) was the stoutest defender in the medieval era of a strongly libertarian conception of the will, maintaining on introspective grounds that will by its very nature is such that “nothing other than the will is the total cause” of its activity ( QAM ). Indeed, he held the unusual view that not only up to but at the very instant that one is willing X , it is possible for one to will Y or at least not to will X . (He articulates this view through the puzzling claim that a single instant of time comprises two ‘instants of nature’, at the first but not the second of which alternative possibilities are preserved.) In opposition to Aquinas and other medieval Aristotelians, Scotus maintained that a precondition of our freedom is that there are two fundamentally distinct ways things can seem good to us: as practically advantageous to us or as according with justice. Contrary to some popular accounts, however, Scotus allowed that the scope of available alternatives for a person will be more or less constricted. He grants that we are not capable of willing something in which we see no good whatsoever, nor of positively repudiating something which appears to us as unqualifiedly good. However, in accordance with his uncompromising position that nothing can be the total cause of the will other than itself, he held that where something does appear to us as unqualifiedly good (perfectly suited both to our advantage and justice)—viz., in the ‘beatific vision’ of God in the afterlife—we still can refrain from willing it. For discussion, see John Duns Scotus, §5.2 .

The problem of free will was an important topic in the modern period, with all the major figures wading into it (Descartes 1641 [1988], 1644 [1988]; Hobbes 1654 [1999], 1656 [1999]; Spinoza 1677 [1992]; Malebranche 1684 [1993]; Leibniz 1686 [1991]; Locke 1690 [1975]; Hume 1740 [1978], 1748 [1975]; Edwards 1754 [1957]; Kant 1781 [1998], 1785 [1998], 1788 [2015]; Reid 1788 [1969]). After less sustained attention in the 19th Century (most notable were Schopenhauer 1841 [1999] and Nietzsche 1886 [1966]), it was widely discussed again among early twentieth century philosophers (Moore 1912; Hobart 1934; Schlick 1939; Nowell-Smith 1948, 1954; Campbell 1951; Ayer 1954; Smart 1961). The centrality of the problem of free will to the various projects of early modern philosophers can be traced to two widely, though not universally, shared assumptions. The first is that without belief in free will, there would be little reason for us to act morally. More carefully, it was widely assumed that belief in an afterlife in which a just God rewards and punishes us according to our right or wrong use of free will was key to motivating us to be moral (Russell 2008, chs. 16–17). Life before death affords us many examples in which vice is better rewarded than virtue and so without knowledge of a final judgment in the afterlife, we would have little reason to pursue virtue and justice when they depart from self-interest. And without free will there can be no final judgement.

The second widely shared assumption is that free will seems difficult to reconcile with what we know about the world. While this assumption is shared by the majority of early modern philosophers, what specifically it is about the world that seems to conflict with freedom differs from philosopher to philosopher. For some, the worry is primarily theological. How can we make sense of contingency and freedom in a world determined by a God who must choose the best possible world to create? For some, the worry was primarily metaphysical. The principle of sufficient reason—roughly, the idea that every event must have a reason or cause—was a cornerstone of Leibniz’s and Spinoza’s metaphysics. How does contingency and freedom fit into such a world? For some, the worry was primarily scientific (Descartes). Given that a proper understanding of the physical world is one in which all physical objects are governed by deterministic laws of nature, how does contingency and freedom fit into such a world? Of course, for some, all three worries were in play in their work (this is true especially of Leibniz).

Despite many disagreements about how best to solve these worries, there were three claims that were widely, although not universally, agreed upon. The first was that free will has two aspects: the freedom to do otherwise and the power of self-determination. The second is that an adequate account of free will must entail that free agents are morally responsible agents and/or fit subjects for punishment. Ideas about moral responsibility were often a yard stick by which analyses of free will were measured, with critics objecting to an analysis of free will by arguing that agents who satisfied the analysis would not, intuitively, be morally responsible for their actions. The third is that compatibilism—the thesis that free will is compatible with determinism—is true. (Spinoza, Reid, and Kant are the clear exceptions to this, though some also see Descartes as an incompatibilist [Ragland 2006].)

Since a detailed discussion of these philosophers’ accounts of free will would take us too far afield, we want instead to focus on isolating a two-step strategy for defending compatibilism that emerges in the early modern period and continued to exert considerable force into the early twentieth century (and perhaps is still at work today). Advocates of this two-step strategy have come to be known as “classical compatibilists”. The first step was to argue that the contrary of freedom is not determinism but external constraint on doing what one wants to do. For example, Hobbes contends that liberty is “the absence of all the impediments to action that are not contained in the nature and intrinsical quality of the agent” (Hobbes 1654 [1999], 38; cf. Hume 1748 [1975] VIII.1; Edwards 1754 [1957]; Ayer 1954). This idea led many compatibilists, especially the more empiricist-inclined, to develop desire- or preference-based analyses of both the freedom to do otherwise and self-determination. An agent has the freedom to do otherwise than \(\phi\) just in case if she preferred or willed to do otherwise, she would have done otherwise (Hobbes 1654 [1999], 16; Locke 1690 [1975]) II.xx.8; Hume 1748 [1975] VIII.1; Moore 1912; Ayer 1954). The freedom to do otherwise does not require that you are able to act contrary to your strongest motivation but simply that your action be dependent on your strongest motivation in the sense that had you desired something else more strongly, then you would have pursued that alternative end. (We will discuss this analysis in more detail below in section 2.2.) Similarly, an agent self-determines her \(\phi\)-ing just in case \(\phi\) is caused by her strongest desires or preferences at the time of action (Hobbes 1654 [1999]; Locke 1690 [1975]; Edwards 1754 [1957]). (We will discuss this analysis in more detail below in section 2.4.) Given these analyses, determinism seems innocuous to freedom.

The second step was to argue that any attempt to analyze free will in a way that putatively captures a deeper or more robust sense of freedom leads to intractable conundrums. The most important examples of this attempt to capture a deeper sense of freedom in the modern period are Immanuel Kant (1781 [1998], 1785 [1998], 1788 [2015]) and Thomas Reid (1788 [1969]) and in the early twentieth century C. A. Campbell (1951). These philosophers argued that the above compatibilist analyses of the freedom to do otherwise and self-determination are, at best, insufficient for free will, and, at worst, incompatible with it. With respect to the classical compatibilist analysis of the freedom to do otherwise, these critics argued that the freedom to do otherwise requires not just that an agent could have acted differently if he had willed differently, but also that he could have willed differently. Free will requires more than free action. With respect to classical compatibilists’ analysis of self-determination, they argued that self-determination requires that the agent—rather than his desires, preferences, or any other mental state—cause his free choices and actions. Reid explains:

I consider the determination of the will as an effect. This effect must have a cause which had the power to produce it; and the cause must be either the person himself, whose will it is, or some other being…. If the person was the cause of that determination of his own will, he was free in that action, and it is justly imputed to him, whether it be good or bad. But, if another being was the cause of this determination, either producing it immediately, or by means and instruments under his direction, then the determination is the act and deed of that being, and is solely imputed to him. (1788 [1969] IV.i, 265)

Classical compatibilists argued that both claims are incoherent. While it is intelligible to ask whether a man willed to do what he did, it is incoherent to ask whether a man willed to will what he did:

For to ask whether a man is at liberty to will either motion or rest, speaking or silence, which he pleases, is to ask whether a man can will what he wills , or be pleased with what he is pleased with? A question which, I think, needs no answer; and they who make a question of it must suppose one will to determine the acts of another, and another to determine that, and so on in infinitum . (Locke 1690 [1975] II.xx.25; cf. Hobbes 1656 [1999], 72)

In response to libertarians’ claim that self-determination requires that the agent, rather than his motives, cause his actions, it was objected that this removes the agent from the natural causal order, which is clearly unintelligible for human animals (Hobbes 1654 [1999], 38). It is important to recognize that an implication of the second step of the strategy is that free will is not only compatible with determinism but actually requires determinism (cf. Hume 1748 [1975] VIII). This was a widely shared assumption among compatibilists up through the mid-twentieth century.

Spinoza’s Ethics (1677 [1992]) is an important departure from the above dialectic. He endorses a strong form of necessitarianism in which everything is categorically necessary as opposed to the conditional necessity embraced by most compatibilists, and he contends that there is no room in such a world for divine or creaturely free will. Thus, Spinoza is a free will skeptic. Interestingly, Spinoza is also keen to deny that the nonexistence of free will has the dire implications often assumed. As noted above, many in the modern period saw belief in free will and an afterlife in which God rewards the just and punishes the wicked as necessary to motivate us to act morally. According to Spinoza, so far from this being necessary to motivate us to be moral, it actually distorts our pursuit of morality. True moral living, Spinoza thinks, sees virtue as its own reward (Part V, Prop. 42). Moreover, while free will is a chimera, humans are still capable of freedom or self-determination. Such self-determination, which admits of degrees on Spinoza’s view, arises when our emotions are determined by true ideas about the nature of reality. The emotional lives of the free persons are ones in which “we desire nothing but that which must be, nor, in an absolute sense, can we find contentment in anything but truth. And so in so far as we rightly understand these matters, the endeavor of the better part of us is in harmony with the order of the whole of Nature” (Part IV, Appendix). Spinoza is an important forerunner to the many free will skeptics in the twentieth century, a position that continues to attract strong support (see Strawson 1986; Double 1992; Smilansky 2000; Pereboom 2001, 2014; Levy 2011; Waller 2011; Caruso 2012; Vilhauer 2012. For further discussion see the entry skepticism about moral responsibility ).

It is worth observing that in many of these disputes about the nature of free will there is an underlying dispute about the nature of moral responsibility. This is seen clearly in Hobbes (1654 [1999]) and early twentieth century philosophers’ defenses of compatibilism. Underlying the belief that free will is incompatible with determinism is the thought that no one would be morally responsible for any actions in a deterministic world in the sense that no one would deserve blame or punishment. Hobbes responded to this charge in part by endorsing broadly consequentialist justifications of blame and punishment: we are justified in blaming or punishing because these practices deter future harmful actions and/or contribute to reforming the offender (1654 [1999], 24–25; cf. Schlick 1939; Nowell-Smith 1948; Smart 1961). While many, perhaps even most, compatibilists have come to reject this consequentialist approach to moral responsibility in the wake of P. F. Strawson’s 1962 landmark essay ‘Freedom and Resentment’ (though see Vargas (2013) and McGeer (2014) for contemporary defenses of compatibilism that appeal to forward-looking considerations) there is still a general lesson to be learned: disputes about free will are often a function of underlying disputes about the nature and value of moral responsibility.

2. The Nature of Free Will

As should be clear from this short discussion of the history of the idea of free will, free will has traditionally been conceived of as a kind of power to control one’s choices and actions. When an agent exercises free will over her choices and actions, her choices and actions are up to her . But up to her in what sense? As should be clear from our historical survey, two common (and compatible) answers are: (i) up to her in the sense that she is able to choose otherwise, or at minimum that she is able not to choose or act as she does, and (ii) up to her in the sense that she is the source of her action. However, there is widespread controversy both over whether each of these conditions is required for free will and if so, how to understand the kind or sense of freedom to do otherwise or sourcehood that is required. While some seek to resolve these controversies in part by careful articulation of our experiences of deliberation, choice, and action (Nozick 1981, ch. 4; van Inwagen 1983, ch. 1), many seek to resolve these controversies by appealing to the nature of moral responsibility. The idea is that the kind of control or sense of up-to-meness involved in free will is the kind of control or sense of up-to-meness relevant to moral responsibility (Double 1992, 12; Ekstrom 2000, 7–8; Smilansky 2000, 16; Widerker and McKenna 2003, 2; Vargas 2007, 128; Nelkin 2011, 151–52; Levy 2011, 1; Pereboom 2014, 1–2). Indeed, some go so far as to define ‘free will’ as ‘the strongest control condition—whatever that turns out to be—necessary for moral responsibility’ (Wolf 1990, 3–4; Fischer 1994, 3; Mele 2006, 17). Given this connection, we can determine whether the freedom to do otherwise and the power of self-determination are constitutive of free will and, if so, in what sense, by considering what it takes to be a morally responsible agent. On these latter characterizations of free will, understanding free will is inextricably linked to, and perhaps even derivative from, understanding moral responsibility. And even those who demur from this claim regarding conceptual priority typically see a close link between these two ideas. Consequently, to appreciate the current debates surrounding the nature of free will, we need to say something about the nature of moral responsibility.

It is now widely accepted that there are different species of moral responsibility. It is common (though not uncontroversial) to distinguish moral responsibility as answerability from moral responsibility as attributability from moral responsibility as accountability (Watson 1996; Fischer and Tognazzini 2011; Shoemaker 2011. See Smith (2012) for a critique of this taxonomy). These different species of moral responsibility differ along three dimensions: (i) the kind of responses licensed toward the responsible agent, (ii) the nature of the licensing relation, and (iii) the necessary and sufficient conditions for licensing the relevant kind of responses toward the agent. For example, some argue that when an agent is morally responsible in the attributability sense, certain judgments about the agent—such as judgments concerning the virtues and vices of the agent—are fitting , and that the fittingness of such judgments does not depend on whether the agent in question possessed the freedom to do otherwise (cf. Watson 1996).

While keeping this controversy about the nature of moral responsibility firmly in mind (see the entry on moral responsibility for a more detailed discussion of these issues), we think it is fair to say that the most commonly assumed understanding of moral responsibility in the historical and contemporary discussion of the problem of free will is moral responsibility as accountability in something like the following sense:

An agent \(S\) is morally accountable for performing an action \(\phi\) \(=_{df.}\) \(S\) deserves praise if \(\phi\) goes beyond what can be reasonably expected of \(S\) and \(S\) deserves blame if \(\phi\) is morally wrong.

The central notions in this definition are praise , blame , and desert . The majority of contemporary philosophers have followed Strawson (1962) in contending that praising and blaming an agent consist in experiencing (or at least being disposed to experience (cf. Wallace 1994, 70–71)) reactive attitudes or emotions directed toward the agent, such as gratitude, approbation, and pride in the case of praise, and resentment, indignation, and guilt in the case of blame. (See Sher (2006) and Scanlon (2008) for important dissents from this trend. See the entry on blame for a more detailed discussion.) These emotions, in turn, dispose us to act in a variety of ways. For example, blame disposes us to respond with some kind of hostility toward the blameworthy agent, such as verbal rebuke or partial withdrawal of good will. But while these kinds of dispositions are essential to our blaming someone, their manifestation is not: it is possible to blame someone with very little change in attitudes or actions toward the agent. Blaming someone might be immediately followed by forgiveness as an end of the matter.

By ‘desert’, we have in mind what Derk Pereboom has called basic desert :

The desert at issue here is basic in the sense that the agent would deserve to be blamed or praised just because she has performed the action, given an understanding of its moral status, and not, for example, merely by virtue of consequentialist or contractualist considerations. (2014, 2)

As we understand desert, if an agent deserves blame, then we have a strong pro tanto reason to blame him simply in virtue of his being accountable for doing wrong. Importantly, these reasons can be outweighed by other considerations. While an agent may deserve blame, it might, all things considered, be best to forgive him unconditionally instead.

When an agent is morally responsible for doing something wrong, he is blame worthy : he deserves hard treatment marked by resentment and indignation and the actions these emotions dispose us toward, such as censure, rebuke, and ostracism. However, it would seem unfair to treat agents in these ways unless their actions were up to them . Thus, we arrive at the core connection between free will and moral responsibility: agents deserve praise or blame only if their actions are up to them—only if they have free will. Consequently, we can assess analyses of free will by their implications for judgments of moral responsibility. We note that some might reject the claim that free will is necessary for moral responsibility (e.g., Frankfurt 1971; Stump 1988), but even for these theorists an adequate analysis of free will must specify a sufficient condition for the kind of control at play in moral responsibility.

In what follows, we focus our attention on the two most commonly cited features of free will: the freedom to do otherwise and sourcehood. While some seem to think that free will consists exclusively in either the freedom to do otherwise (van Inwagen 2008) or in sourcehood (Zagzebski 2000), many philosophers hold that free will involves both conditions—though philosophers often emphasize one condition over the other depending on their dialectical situation or argumentative purposes (cf. Watson 1987). In what follows, we will describe the most common characterizations of these two conditions.

For most newcomers to the problem of free will, it will seem obvious that an action is up to an agent only if she had the freedom to do otherwise. But what does this freedom come to? The freedom to do otherwise is clearly a modal property of agents, but it is controversial just what species of modality is at stake. It must be more than mere possibility : to have the freedom to do otherwise consists in more than the mere possibility of something else’s happening. A more plausible and widely endorsed understanding claims the relevant modality is ability or power (Locke 1690 [1975], II.xx; Reid 1788 [1969], II.i–ii; D. Locke 1973; Clarke 2009; Vihvelin 2013). But abilities themselves seem to come in different varieties (Lewis 1976; Horgan 1979; van Inwagen 1983, ch. 1; Mele 2003; Clarke 2009; Vihvelin 2013, ch. 1; Franklin 2015; Cyr and Swenson 2019; Hofmann 2022; Whittle 2022), so a claim that an agent has ‘the ability to do otherwise’ is potentially ambiguous or indeterminate; in philosophical discussion, the sense of ability appealed to needs to be spelled out. A satisfactory account of the freedom to do otherwise owes us both an account of the kind of ability in terms of which the freedom to do otherwise is analyzed, and an argument for why this kind of ability (as opposed to some other species) is the one constitutive of the freedom to do otherwise. As we will see, philosophers sometimes leave this second debt unpaid.

The contemporary literature takes its cue from classical compatibilism’s recognized failure to deliver a satisfactory analysis of the freedom to do otherwise. As we saw above, classical compatibilists (Hobbes 1654 [1999], 1656 [1999]; Locke 1690 [1975]; Hume 1740 [1978], 1748 [1975]; Edwards 1754 [1957]; Moore 1912; Schlick 1939; Ayer 1954) sought to analyze the freedom to do otherwise in terms of a simple conditional analysis of ability:

Simple Conditional Analysis: An agent \(S\) has the ability to do otherwise if and only if, were \(S\) to choose to do otherwise, then \(S\) would do otherwise.

Part of the attraction of this analysis is that it obviously reconciles the freedom to do otherwise with determinism. While the truth of determinism entails that one’s action is inevitable given the past and laws of nature, there is nothing about determinism that implies that if one had chosen otherwise, then one would not do otherwise.

There are two problems with the Simple Conditional Analysis . The first is that it is, at best, an analysis of free action, not free will (cf. Reid 1788 [1969]; Chisholm 1966; 1976, ch. 2; Lehrer 1968, 1976). It only tells us when an agent has the ability to do otherwise, not when an agent has the ability to choose to do otherwise. One might be tempted to think that there is an easy fix along the following lines:

Simple Conditional Analysis*: An agent \(S\) has the ability to choose otherwise if and only if, were \(S\) to desire or prefer to choose otherwise, then \(S\) would choose otherwise.

The problem is that we often fail to choose to do things we want to choose, even when it appears that we had the ability to choose otherwise (one might think the same problem attends the original analysis). Suppose that, in deciding how to spend my evening, I have a desire to choose to read and a desire to choose to watch a movie. Suppose that I choose to read. By all appearances, I had the ability to choose to watch a movie. And yet, according to the Simple Conditional Analysis* , I lack this freedom, since the conditional ‘if I were to desire to choose to watch a movie, then I would choose to watch a movie’ is false. I do desire to choose to watch a movie and yet I do not choose to watch a movie. It is unclear how to remedy this problem. On the one hand, we might refine the antecedent by replacing ‘desire’ with ‘strongest desire’ (cf. Hobbes 1654 [1999], 1656 [1999]; Edwards 1754 [1957]). The problem is that this assumes, implausibly, that we always choose what we most strongly desire (for criticisms of this view see Reid 1788 [1969]; Campbell 1951; Wallace 1999; Holton 2009). On the other hand, we might refine the consequent by replacing ‘would choose to do otherwise’ with either ‘would probably choose to do otherwise’ or ‘might choose to do otherwise’. But each of these proposals is also problematic. If ‘probably’ means ‘more likely than not’, then this revised conditional still seems too strong: it seems possible to have the ability to choose otherwise even when one’s so choosing is unlikely. If we opt for ‘might’, then the relevant sense of modality needs to be spelled out.

Even if there are fixes to these problems, there is a yet deeper problem with these analyses. There are some agents who clearly lack the freedom to do otherwise and yet satisfy the conditional at the heart of these analyses. That is, although these agents lack the freedom to do otherwise, it is, for example, true of them that if they chose otherwise, they would do otherwise. Picking up on an argument developed by Keith Lehrer (1968; cf. Campbell 1951; Broad 1952; Chisholm 1966), consider an agoraphobic, Luke, who, when faced with the prospect of entering an open space, is subject not merely to an irresistible desire to refrain from intentionally going outside, but an irresistible desire to refrain from even choosing to go outside. Given Luke’s psychology, there is no possible world in which he suffers from his agoraphobia and chooses to go outside. It may well nevertheless be true that if Luke chose to go outside, then he would have gone outside. After all, any possible world in which he chooses to go outside will be a world in which he no longer suffers (to the same degree) from his agoraphobia, and thus we have no reason to doubt that in those worlds he would go outside as a result of his choosing to go outside. The same kind of counterexample applies with equal force to the conditional ‘if \(S\) desired to choose otherwise, then \(S\) would choose otherwise’.

While simple conditional analyses admirably make clear the species of ability to which they appeal, they fail to show that this species of ability is constitutive of the freedom to do otherwise. Agents need a stronger ability to do otherwise than characterized by such simple conditionals. Some argue that the fundamental source of the above problems is the conditional nature of these analyses (Campbell 1951; Austin 1961; Chisholm 1966; Lehrer 1976; van Inwagen 1983, ch. 4). The sense of ability relevant to the freedom to do otherwise is the ‘all-in sense’—that is, holding everything fixed up to the time of the decision or action—and this sense, so it is argued, can only be captured by a categorical analysis of the ability to do otherwise:

Categorical Analysis: An agent \(S\) has the ability to choose or do otherwise than \(\phi\) at time \(t\) if and only if it was possible, holding fixed everything up to \(t\), that \(S\) choose or do otherwise than \(\phi\) at \(t\).

This analysis gets the right verdict in Luke’s case. He lacks the ability to do otherwise than refrain from choosing to go outside, according to this analysis, because there is no possible world in which he suffers from his agoraphobia and yet chooses to go outside. Unlike the above conditional analyses, the Categorical Analysis requires that we hold fixed Luke’s agoraphobia when considering alternative possibilities.

If the Categorical Analysis is correct, then free will is incompatible with determinism. According to the thesis of determinism, all deterministic possible worlds with the same pasts and laws of nature have the same futures (Lewis 1979; van Inwagen 1983, 3). Suppose John is in deterministic world \(W\) and refrains from raising his hand at time \(t\). Since \(W\) is deterministic, it follows that any possible world \(W^*\) that has the same past and laws up to \(t\) must have the same future, including John’s refraining from raising his hand at \(t\). Therefore, John lacked the ability, and thus freedom, to raise his hand.

This argument, carefully articulated in the late 1960s and early 1970s by Carl Ginet (1966, 1990) and Peter van Inwagen (1975, 1983) and refined in important ways by John Martin Fischer (1994), has come to be known as the Consequence Argument. van Inwagen offers the following informal statement of the argument:

If determinism is true, then our acts are the consequences of the laws of nature and events in the remote past. But it is not up to us what went on before we were born [i.e., we do not have the ability to change the past], and neither is it up to us what the laws of nature are [i.e., we do not have the ability to break the laws of nature]. Therefore, the consequences of these things (including our present acts) are not up to us. (van Inwagen 1983, 16; cf. Fischer 1994, ch. 1)

Like the Simple Conditional Analysis , a virtue of the Categorical Analysis is that it spells out clearly the kind of ability appealed to in its analysis of the freedom to do otherwise, but like the Simple Conditional Analysis , critics have argued that the sense of ability it captures is not the sense at the heart of free will. The objection here, though, is not that the analysis is too permissive or weak, but rather that it is too restrictive or strong.

While there have been numerous different replies along these lines (e.g., Lehrer 1980; Slote 1982; Watson 1986. See the entry on arguments for incompatibilism for a more extensive discussion of and bibliography for the Consequence Argument), the most influential of these objections is due to David Lewis (1981). Lewis contended that van Inwagen’s argument equivocated on ‘is able to break a law of nature’. We can distinguish two senses of ‘is able to break a law of nature’:

(Weak Thesis) I am able to do something such that, if I did it, a law of nature would be broken.

(Strong Thesis) I am able to do something such that, if I did it, it would constitute a law of nature’s being broken or would cause a law of nature to be broken.

If we are committed to the Categorical Analysis , then those desiring to defend compatibilism seem to be committed to the sense of ability in ‘is able to break a law of nature’ along the lines of the strong thesis. Lewis agrees with van Inwagen that it is “incredible” to think humans have such an ability (Lewis 1981, 113), but maintains that compatibilists need only appeal to the ability to break a law of nature in the weak sense. While it is absurd to think that humans are able to do something that is a violation of a law of nature or causes a law of nature to be broken, there is nothing incredible, so Lewis claimed, in thinking that humans are able to do something such that if they did it, a law of nature would be broken. In essence, Lewis is arguing that incompatibilists like van Inwagen have failed to adequately motivate the restrictiveness of the Categorical Analysis .

Some incompatibilists have responded to Lewis by contending that even the weak ability is incredible (van Inwagen 2004). But there is a different and often overlooked problem for Lewis: the weak ability seems to be too weak. Returning to the case of John’s refraining from raising his hand, Lewis maintains that the following three propositions are consistent:

One might think that (ii) and (iii) are incompatible with (i). Consider again Luke, our agoraphobic. Suppose that his agoraphobia affects him in such a way that he will only intentionally go outside if he chooses to go outside, and yet his agoraphobia makes it impossible for him to make this choice. In this case, a necessary condition for Luke’s intentionally going outside is his choosing to go outside. Moreover, Luke is not able to choose or cause himself to choose to go outside. Intuitively, this would seem to imply that Luke lacks the freedom to go outside. But this implication does not follow for Lewis. From the fact that Luke is able to go outside only if he chooses to go outside and the fact that Luke is not able to choose to go outside, it does not follow , on Lewis’s account, that Luke lacks the ability to go outside. Consequently, Lewis’s account fails to explain why Luke lacks the ability to go outside (cf. Speak 2011). (For other important criticisms of Lewis, see Ginet [1990, ch. 5] and Fischer [1994, ch. 4].)

While Lewis may be right that the Categorical Analysis is too restrictive, his argument, all by itself, doesn’t seem to establish this. His argument is successful only if (a) he can provide an alternative analysis of ability that entails that Luke’s agoraphobia robs him of the ability to go outside and (b) does not entail that determinism robs John of the ability to raise his hand (cf. Pendergraft 2010). Lewis must point out a principled difference between these two cases. As should be clear from the above, the Simple Conditional Analysis is of no help. However, some recent work by Michael Smith (2003), Kadri Vihvelin (2004; 2013), and Michael Fara (2008) have attempted to fill this gap. What unites these theorists—whom Clarke (2009) has called the ‘new dispositionalists’—is their attempt to appeal to recent advances in the metaphysics of dispositions to arrive at a revised conditional analysis of the freedom to do otherwise. The most perspicuous of these accounts is offered by Vihvelin (2004), who argues that an agent’s having the ability to do otherwise is solely a function of the agent’s intrinsic properties. (It is important to note that Vihvelin [2013] has come to reject the view that free will consists exclusively in the kind of ability analyzed below.) Building on Lewis’s work on the metaphysics of dispositions, she arrives at the following analysis of ability:

Revised Conditional Analysis of Ability : \(S\) has the ability at time \(t\) to do \(X\) iff, for some intrinsic property or set of properties \(B\) that \(S\) has at \(t\), for some time \(t'\) after \(t\), if \(S\) chose (decided, intended, or tried) at \(t\) to do \(X\), and \(S\) were to retain \(B\) until \(t'\), \(S\)’s choosing (deciding, intending, or trying) to do \(X\) and \(S\)’s having \(B\) would jointly be an \(S\)-complete cause of \(S\)’s doing \(X\). (Vihvelin 2004, 438)

Lewis defines an ‘\(S\)-complete cause’ as “a cause complete insofar as havings of properties intrinsic to [\(S\)] are concerned, though perhaps omitting some events extrinsic to [\(S\)]” (cf. Lewis 1997, 156). In other words, an \(S\)-complete cause of \(S\)’s doing \(\phi\) requires that \(S\) possess all the intrinsic properties relevant to \(S\)’s causing \(S\)’s doing \(\phi\). This analysis appears to afford Vihvelin the basis for a principled difference between agoraphobics and merely determined agents. We must hold fixed an agent’s phobias since they are intrinsic properties of agents, but we need not hold fixed the laws of nature because these are not intrinsic properties of agents. (It should be noted that the assumption that intrinsic properties are wholly separable from the laws of nature is disputed by ‘dispositional essentialists.’ See the entry on metaphysics of causation .) Vihvelin’s analysis appears to be restrictive enough to exclude phobics from having the freedom to do otherwise, but permissive enough to allow that some agents in deterministic worlds have the freedom to do otherwise.

But appearances can be deceiving. The new dispositionalist claims have received some serious criticism, with the majority of the criticisms maintaining that these analyses are still too permissive (Clarke 2009; Whittle 2010; Franklin 2011b). For example, Randolph Clarke argues that Vihvelin’s analysis fails to overcome the original problem with the Simple Conditional Analysis . He writes, “A phobic agent might, on some occasion, be unable to choose to A and unable to A without so choosing, while retaining all that she would need to implement such a choice, should she make it. Despite lacking the ability to choose to A , the agent might have some set of intrinsic properties B such that, if she chose to A and retained B , then her choosing to A and her having B would jointly be an agent-complete cause of her A -ing” (Clarke 2009, p. 329).

The Categorical Analysis , and thus incompatibilism about free will and determinism, remains an attractive option for many philosophers precisely because it seems that compatibilists have yet to furnish an analysis of the freedom to do otherwise that implies that phobics clearly lack the ability to choose or do otherwise that is relevant to moral responsibility and yet some merely determined agents have this ability.

Some have tried to avoid these lingering problems for compatibilists by arguing that the freedom to do otherwise is not required for free will or moral responsibility. What matters for an agent’s freedom and responsibility, so it is argued, is the source of her action—how her action was brought about. The most prominent strategy for defending this move appeals to ‘Frankfurt-style cases’. In a ground-breaking article, Harry Frankfurt (1969) presented a series of thought experiments intended to show that it is possible that agents are morally responsible for their actions and yet they lack the ability to do otherwise. While Frankfurt (1971) took this to show that moral responsibility and free will come apart—free will requires the ability to do otherwise but moral responsibility does not—if we define ‘free will’ as ‘the strongest control condition required for moral responsibility’ (cf. Wolf 1990, 3–4; Fischer 1994, 3; Mele 2006, 17), then if Frankfurt-style cases show that moral responsibility does not require the ability to do otherwise, then they also show that free will does not require the ability to do otherwise. Let us consider this challenge in more detail.

Here is a representative Frankfurt-style case:

Imagine, if you will, that Black is a quite nifty (and even generally nice) neurosurgeon. But in performing an operation on Jones to remove a brain tumor, Black inserts a mechanism into Jones’s brain which enables Black to monitor and control Jones’s activities. Jones, meanwhile, knows nothing of this. Black exercises this control through a sophisticated computer which he has programmed so that, among other things, it monitors Jones’s voting behavior. If Jones were to show any inclination to vote for Bush, then the computer, through the mechanism in Jones’s brain, intervenes to ensure that he actually decides to vote for Clinton and does so vote. But if Jones decides on his own to vote for Clinton, the computer does nothing but continue to monitor—without affecting—the goings-on in Jones’s head. (Fischer 2006, 38)

Fischer goes on to suppose that Jones “decides to vote for Clinton on his own”, without any interference from Black, and maintains that in such a case Jones is morally responsible for his decision. Fischer draws two interrelated conclusions from this case. The first, negative conclusion, is that the ability to do otherwise is not necessary for moral responsibility. Jones is unable to refrain from deciding to vote for Clinton, and yet, so long as Jones decides to vote for Clinton on his own, his decision is free and one for which he is morally responsible. The second, positive conclusion, is that freedom and responsibility are functions of the actual sequence . What matters for an agent’s freedom and moral responsibility is not what might have happened, but how his action was actually brought about. What matters is not whether the agent had the ability to do otherwise, but whether he was the source of his actions.

The success of Frankfurt-style cases is hotly contested. An early and far-reaching criticism is due to David Widerker (1995), Carl Ginet (1996), and Robert Kane (1996, 142–43). According to this criticism, proponents of Frankfurt-style cases face a dilemma: either these cases assume that the connection between the indicator (in our case, the absence of Jones’s showing any inclination to decide to vote for Bush) and the agent’s decision (here, Jones’s deciding to vote for Clinton) is deterministic or not. If the connection is deterministic, then Frankfurt-style cases cannot be expected to convince incompatibilists that the ability to do otherwise is not necessary for moral responsibility and/or free will, since Jones’s action will be deterministically brought about by factors beyond his control, leading incompatibilists to conclude that Jones is not morally responsible for his decision. But if the connection is nondeterministic, then it is possible even in the absence of showing any inclination to decide to vote for Bush, that Jones decides to vote for Bush, and so he retains the ability to do otherwise. Either way Frankfurt-style cases fail to show that Jones is both morally responsible for his decision and yet is unable to do otherwise.

While some have argued that even Frankfurt-style cases that assume determinism are effective (see, e.g., Fischer 1999, 2010, 2013 and Haji and McKenna 2004 and for criticisms of this approach, see Goetz 2005, Palmer 2005, 2014, Widerker and Goetz 2013, and Cohen 2017), the majority of proponents of Frankfurt-style cases have attempted to revise these cases so that they are explicitly nondeterministic and yet still show that the agent was morally responsible even though he lacked the ability to do otherwise—or, at least that he lacked any ability to do otherwise that could be relevant to grounding the agent’s moral responsibility (see, e.g., Mele and Robb 1998, 2003, Pereboom 2001, 2014, McKenna 2003, Hunt 2005, and for criticisms of these cases see Ginet 2002, Timpe 2006, Widerker 2006, Franklin 2011c, Moya 2011, Palmer 2011, 2013, Robinson 2014, Capes 2016, Capes and Swenson 2017, and Elzein 2017).

Supposing that Frankfurt-style cases are successful, what exactly do they show? In our view, they show neither that free will and moral responsibility do not require an ability to do otherwise in any sense nor that compatibilism is true. Frankfurt-style cases are of clear help to the compatibilists’ position (though see Speak 2007 for a dissenting opinion). The Consequence Argument raises a powerful challenge to the cogency of compatibilism. But if Frankfurt-style cases are successful, agents can act freely in the sense relevant to moral responsibility while lacking the ability to do otherwise in the all-in sense. This allows compatibilists to concede that the all-in ability to do otherwise is incompatible with determinism, and yet insist that it is irrelevant to the question of the compatibility of determinism with moral responsibility (and perhaps even free will, depending on how we define this) (cf. Fischer 1987, 1994. For a challenge to the move from not strictly necessary to irrelevant, see O’Connor [2000, 20–22] and in reply, Fischer [2006, 152–56].). But, of course, showing that an argument for the falsity of compatibilism is irrelevant does not show that compatibilism is true. Indeed, many incompatibilists maintain that Frankfurt-style cases are successful and defend incompatibilism not via the Consequence Argument, but by way of arguments that attempt to show that agents in deterministic worlds cannot be the ‘source’ of their actions in the way that moral responsibility requires (Stump 1999; Zagzebski 2000; Pereboom 2001, 2014). Thus, if successful, Frankfurt-style cases would be at best the first step in defending compatibilism. The second step must offer an analysis of the kind of sourcehood constitutive of free will that entails that free will is compatible with determinism (cf. Fischer 1982).

Furthermore, while proponents of Frankfurt-style cases often maintain that these cases show that no ability to do otherwise is necessary for moral responsibility (“I have employed the Frankfurt-type example to argue that this sense of control [i.e. the one required for moral responsibility] need not involve any alternative possibilities” [Fischer 2006, p. 40; emphasis ours]), we believe that this conclusion overreaches. At best, Frankfurt-style cases show that the ability to do otherwise in the all-in sense —in the sense defined by the Categorical Analysis —is not necessary for free will or moral responsibility (cf. Franklin 2015). To appreciate this, let us assume that in the above Frankfurt-style case Jones lacks the ability to do otherwise in the all-in sense: there is no possible world in which we hold fixed the past and laws and yet Jones does otherwise, since all such worlds include Black and his preparations for preventing Jones from doing otherwise should Jones show any inclination. Even if this is all true, it should take only a little reflection to recognize that in this case Jones is able to do otherwise in certain weaker senses we might attach to that phrase, and compatibilists in fact still think that the ability to do otherwise in some such senses is necessary for free will and moral responsibility. Consequently, even though Frankfurt-style cases have, as a matter of fact, moved many compatibilists away from emphasizing ability to do otherwise to emphasizing sourcehood, we suggest that this move is best seen as a weakening of the ability-to-do-otherwise condition on moral responsibility (but see Cyr 2017 and Kittle 2019 for criticisms of this claim). (A potentially important exception to this claim is Sartorio [2016], who appealing to some controversial ideas in the metaphysics of causation appears to argue that no sense of the ability to do otherwise is necessary for control in the sense at stake for moral responsibility, but instead what matters is whether the agent is the cause of the action. We simply note that Sartorio’s account of causation is a modal one [see especially Sartorio (2016, 94–95, 132–37)] and thus it is far from clear that her account of freedom and responsibility is really an exception.)

In this section, we will assume that Frankfurt-style cases are successful in order to consider two prominent compatibilist attempts to construct analyses of the sourcehood condition (though see the entry on compatibilism for a more systematic survey of compatibilist theories of free will). The first, and perhaps most popular, compatibilist model is a reasons-responsiveness model. According to this model, an agent’s action \(\phi\) is free just in case the agent or manner in which the action is brought about is responsive to the reasons available to the agent at the time of action. While compatibilists develop this kind of account in different ways, the most detailed proposal is due to John Martin Fischer (1994, 2006, 2010, 2012; Fischer and Ravizza 1998. For similar compatibilist treatments of reasons-responsiveness, see Wolf 1990, Wallace 1994, Haji 1998, Nelkin 2011, McKenna 2013, Vargas 2013, Sartorio 2016). Fischer and Ravizza argue that an agent’s action is free and one for which he is morally responsible only if the mechanism that issued in the action is moderately reasons-responsive (Fischer and Ravizza 1998, ch. 3). By ‘mechanism’, Fischer and Ravizza simply mean “the way the action was brought about” (38). One mechanism they often discuss is practical deliberation. For example, in the case of Jones discussed above, his decision to vote for Clinton on his own was brought about by the process of practical deliberation. What must be true of this process, this mechanism, for it to be moderately reasons-responsive? Fischer and Ravizza maintain that moderate reasons-responsiveness consists in two conditions: reasons-receptivity and reasons-reactivity. A mechanism’s reasons-receptivity depends on the agent’s cognitive capacities, such as being capable of understanding moral reasons and the implications of their actions (69–73). The second condition is more important for us in the present context. A mechanism’s reasons-reactivity depends on how the mechanism would react given different reasons for action. Fischer and Ravizza argue that the kind of reasons-reactivity at stake is weak reasons-reactivity, where this merely requires that there is some possible world in which the laws of nature remain the same, the same mechanism operates, there is a sufficient reason to do otherwise, and the mechanism brings about the alternative action in response to this sufficient reason (73–76). On this analysis, while Jones, due to the activity of Black, lacks the ‘all-in’ sense of the ability to do otherwise, he is nevertheless morally responsible for deciding to vote for Clinton because his action finds its source in Jones’s practical deliberation that is moderately reasons-responsive.

Fischer and Ravizza’s theory of freedom and responsibility has shifted the focus of much recent debate to questions of sourcehood. Moreover, one might argue that this theory is a clear improvement over classical compatibilism with respect to handling cases of phobia. By focusing on mechanisms, Fischer and Ravizza can argue that our agoraphobic Luke is not morally responsible for deciding to refrain from going outside because the mechanism that issues in this action—namely his agoraphobia—is not moderately reasons-responsive. There is no world with the same laws of nature as our own, this mechanism operates, and yet it reacts to a sufficient reason to go outside. No matter what reasons there are for Luke to go outside, when acting on this mechanism, he will always refrain from going outside (cf. Fischer 1987, 74).

Before turning to our second compatibilist model, it is worth noting that it would be a mistake to think that Fischer and Ravizza’s account is a sourcehood account to the exclusion of the ability to do otherwise in any sense. As we have just seen, Fischer and Ravizza place clear modal requirements on mechanisms that issue in actions with respect to which agents are free and morally responsible. Indeed, this should be clear from the very idea of reasons-responsiveness. Whether one is responsive depends not merely on how one does respond, but also on how one would respond. Thus, any account that makes reasons-responsiveness an essential condition of free will is an account that makes the ability to do otherwise, in some sense, necessary for free will (Fischer [2018] concedes this point, though, as noted above, the reader should consider Sartorio [2016] as a potential counterexample to this claim).

The second main compatibilist model of sourcehood is an identification model. Accounts of sourcehood of this kind lay stress on self-determination or autonomy: to be the source of her action the agent must self-determine her action. Like the contemporary discussion of the ability to do otherwise, the contemporary discussion of the power of self-determination begins with the failure of classical compatibilism to produce an acceptable definition. According to classical compatibilists, self-determination simply consists in the agent’s action being determined by her strongest motive. On the assumption that some compulsive agents’ compulsions operate by generating irresistible desires to act in certain ways, the classical compatibilist analysis of self-determination implies that these compulsive actions are self-determined. While Hobbes seems willing to accept this implication (1656 [1999], 78), most contemporary compatibilists concede that this result is unacceptable.

Beginning with the work of Harry Frankfurt (1971) and Gary Watson (1975), many compatibilists have developed identification accounts of self-determination that attempt to draw a distinction between an agent’s desires or motives that are internal to the agent and those that are external. The idea is that while agents are not (or at least may not be) identical to any motivations (or bundle of motivations), they are identified with a subset of their motivations, rendering these motivations internal to the agent in such a way that any actions brought about by these motivations are self -determined. The identification relation is not an identity relation, but something weaker (cf. Bratman 2000, 39n12). What the precise nature of the identification relation is and to which attitudes an agent stands in this relation is hotly disputed. Lippert-Rasmussen (2003) helpfully divides identification accounts into two main types. The first are “authority” accounts, according to which agents are identified with attitudes that are authorized to speak for them (368). The second are authenticity accounts, according to which agents are identified with attitudes that reveal who they truly are (368). (But see Shoemaker 2015 for an ecumenical account of identification that blends these two accounts.) Proposed attitudes to which agents are said to stand in the identification relation include higher-order desires (Frankfurt 1971), cares or loves (Frankfurt 1993, 1994; Shoemaker 2003; Jaworska 2007; Sripada 2016), self-governing policies (Bratman 2000), the desire to make sense of oneself (Velleman 1992, 2009), and perceptions (or judgments) of the good (or best) (Watson 1975; Stump 1988; Ekstrom 1993; Mitchell-Yellin 2015).

The distinction between internal and external motivations allows identification theorists to enrich classical compatibilists’ understanding of constraint, while remaining compatibilists about free will and determinism. According to classical compatibilists, the only kind of constraint is external (e.g., broken cars and broken legs), but addictions and phobias seem just as threatening to free will. Identification theorists have the resources to concede that some constraints are internal. For example, they can argue that our agoraphobic Luke is not free in refraining from going outside even though this decision was caused by his strongest desires because he is not identified with his strongest desires. On compatibilist identification accounts, what matters for self-determination is not whether our actions are determined or undetermined, but whether they are brought about by motives with which the agent is identified: exercises of the power of self-determination consists in an agent’s actions being brought about, in part, by an agent’s motives with which she is identified. (It is important to note that while we have distinguished reasons-responsive accounts from identification accounts, there is nothing preventing one from combing both elements in a complete analysis of free will.)

Even if these reasons-responsive and identification compatibilist accounts of sourcehood might successfully side-step the Consequence Argument, they must come to grips with a second incompatibilist argument: the Manipulation Argument. The general problem raised by this line of argument is that whatever proposed compatibilist conditions for an agent \(S\)’s being free with respect to, and morally responsible for, some action \(\phi\), it will seem that agents can be manipulated into satisfying these conditions with respect to \(\phi\) and, yet, precisely because they are manipulated into satisfying these conditions, their freedom and responsibility seem undermined. The two most influential forms of the Manipulation Argument are Pereboom’s Four-case Argument (2001, ch. 4; 2014, ch. 4) and Mele’s Zygote Argument (2006, ch. 7. See Todd 2010, 2012 for developments of Mele’s argument). As the structure of Mele’s version is simpler, we will focus on it.

Imagine a goddess Diana who creates a zygote \(Z\) in Mary in some deterministic world. Suppose that Diana creates \(Z\) as she does because she wants Jones to be murdered thirty years later. From her knowledge of the laws of nature in her world and her knowledge of the state of the world just prior to her creating \(Z\), she knows that a zygote with precisely \(Z\)’s constitution located in Mary will develop into an agent Ernie who, thirty years later, will murder Jones as a result of his moderately reasons-responsive mechanism and on the basis of motivations with which he is identified (whatever those might be). Suppose Diana succeeds in her plan and Ernie murders Jones as a result of her manipulation.

Many judge that Ernie is not morally responsible for murdering Jones even though he satisfies both the reasons-responsive and identification criteria. There are two possible lines of reply open to compatibilists. On the soft-line reply, compatibilists attempt to show that there is a relevant difference between manipulated agents such as Ernie and agents who satisfy their account (McKenna 2008, 470). For example, Fischer and Ravizza propose a second condition on sourcehood: in addition to a mechanism’s being moderately reasons-responsive, an agent is morally responsible for the output of such a mechanism only if the agent has come to take responsibility for the mechanism, where an agent has taken responsibility for a mechanism \(M\) just in case (i) she believes that she is an agent when acting from \(M\), (ii) she believes that she is an apt target for blame and praise for acting from \(M\), and (iii) her beliefs specified in (i) and (ii) are “based, in an appropriate way, on [her] evidence” (Fischer and Ravizza 1998, 238). The problem with this reply is that we can easily imagine Diana creating Ernie so that his murdering Jones is a result not only of a moderately reasons-responsive mechanism, but also a mechanism for which he has taken responsibility. On the hard-line reply, compatibilists concede that, despite initial appearances, the manipulated agent is free and morally responsible and attempt to ameliorate the seeming counterintuitiveness of this concession (McKenna 2008, 470–71). Here compatibilists might point out that the idea of being manipulated is worrisome only so long as the manipulators are interfering with an agent’s development. But if the manipulators simply create a person, and then allow that person’s life to unfold without any further inference, the manipulators’ activity is no threat to freedom (McKenna 2008; Fischer 2011; Sartorio 2016, ch. 5). (For other responses to the Manipulation Argument, see Kearns 2012; Sripada 2012; McKenna 2014.)

Despite these compatibilist replies, to some the idea that the entirety of a free agent’s life can be determined, and in this way controlled, by another agent will seem incredible. Some take the lesson of the Manipulation Argument to be that no compatibilist account of sourcehood or self-determination is satisfactory. True sourcehood—the kind of sourcehood that can actually ground an agent’s freedom and responsibility—requires, so it is argued, that one’s action not be causally determined by factors beyond one’s control.

Libertarians, while united in endorsing this negative condition on sourcehood, are deeply divided concerning which further positive conditions may be required. It is important to note that while libertarians are united in insisting that compatibilist accounts of sourcehood are insufficient, they are not committed to thinking that the conditions of freedom spelled out in terms either of reasons-responsiveness or of identification are not necessary. For example, Stump (1988, 1996, 2010) builds a sophisticated libertarian model of free will out of resources originally developed within Frankfurt’s identification model (see also Ekstrom 1993, 2000; Franklin 2014) and nearly all libertarians agree that exercises of free will require agents to be reasons-responsive (e.g., Kane 1996; Clarke 2003, chs. 8–9; Franklin 2018, ch. 2). Moreover, while this section focuses on libertarian accounts of sourcehood, we remind readers that most (if not all) libertarians think that the freedom to do otherwise is also necessary for free will and moral responsibility.

There are three main libertarian options for understanding sourcehood or self-determination: non-causal libertarianism (Ginet 1990, 2008; McCann 1998; Lowe 2008; Goetz 2009; Pink 2017; Palmer 2021), event-causal libertarianism (Wiggins 1973; Kane 1996, 1999, 2011, 2016; Mele 1995, chs. 11–12; 2006, chs. 4–5; 2017; Ekstrom 2000, 2019; Clarke 2003, chs. 2–6; Franklin 2018), and agent-causal libertarianism (Reid 1788 [1969]; Chisholm 1966, 1976; Taylor 1966; O’Connor 2000; Clarke 1993; 1996; 2003, chs. 8–10; Griffith 2010; Steward 2012). Non-causal libertarians contend that exercises of the power of self-determination need not (or perhaps even cannot) be caused or causally structured. According to this view, we control our volition or choice simply in virtue of its being ours—its occurring in us. We do not exert a special kind of causality in bringing it about; instead, it is an intrinsically active event, intrinsically something we do . While there may be causal influences upon our choice, there need not be, and any such causal influence is wholly irrelevant to understanding why it occurs. Reasons provide an autonomous, non-causal form of explanation. Provided our choice is not wholly determined by prior factors, it is free and under our control simply in virtue of being ours. Non-causal views have failed to garner wide support among libertarians since, for many, self- determination seems to be an essentially causal notion (cf. Mele 2000 and Clarke 2003, ch. 2). This dispute hinges on the necessary conditions on the concept of causal power, and relatedly on whether power simpliciter admits causal and non-causal variants. For discussion, see O’Connor (2021).

Most libertarians endorse an event-causal or agent-causal account of sourcehood. Both these accounts maintain that exercises of the power of self-determination consist partly in the agent’s bringing about her choice or action, but they disagree on how to analyze an agent’s bringing about her choice . While event-causal libertarianism admits of different species, at the heart of this view is the idea that self-determining an action requires, at minimum, that the agent cause the action and that an agent’s causing his action is wholly reducible to mental states and other events involving the agent nondeviantly causing his action. Consider an agent’s raising his hand. According to the event-causal model at its most basic level, an agent’s raising his hand consists in the agent’s causing his hand to rise and his causing his hand to rise consists in apt mental states and events involving the agent—such as the agent’s desire to ask a question and his belief that he can ask a question by raising his hand— nondeviantly causing his hand to rise. (The nondeviance clause is required since it seems possible that an event be brought about by one’s desires and beliefs and yet not be self-determined, or even an action for that matter, due to the unusual causal path leading from the desires and beliefs to action. Imagine a would-be accomplice of an assassin believes that his dropping his cigarette is the signal for the assassin to shoot his intended victim and he desires to drop his cigarette and yet this belief and desire so unnerve him that he accidentally drops his cigarette. While the event of dropping the cigarette is caused by a relevant desire and belief it does not seem to be self-determined and perhaps is not even an action [cf. Davidson 1973].) To fully spell out this account, event-causal libertarians must specify which mental states and events are apt (cf. Brand 1979)—which mental states and events are the springs of self-determined actions—and what nondeviance consists in (cf. Bishop 1989). (We note that this has proven very difficult, enough so that some take the problem to spell doom for event-causal theories of action. Such philosophers [e.g., Taylor 1966 and Sehon 2005] take agential power to be conceptually and/or ontologically primitive and understand reasons explanations of action in irreducibly teleological terms. See Stout 2010 for a brisk survey of discussions of this topic.) For ease, in what follows we will assume that apt mental states are an agent’s reasons that favor the action.

Event-causal libertarians, of course, contend that self-determination requires more than nondeviant causation by agents’ reasons: for it is possible that agents’ actions in deterministic worlds are nondeviantly caused by apt mental states and events. Self-determination requires nondeterministic causation, in a nondeviant way, by an agent’s reasons. While historically many have thought that nondeterministic causation is impossible (Hobbes 1654 [1999], 1656 [1999]; Hume 1740 [1978], 1748 [1975]), with the advent of quantum physics and, from a very different direction, an influential essay by G.E.M. Anscombe (1971), it is now widely assumed that nondeterministic (or probabilistic) causation is possible. There are two importantly different ways to understand nondeterministic causation: as the causation of probability or as the probability of causation. Under the causation of probability model, a nondeterministic cause \(C\) causes (or causally contributes to) the objective probability of the outcome’s occurring rather than the outcome itself. On this account, \(S\)’s reasons do not cause his decision but there being a certain antecedent objective probability of its occurring, and the decision itself is uncaused. On the competing probability of causation model, a nondeterministic cause \(C\) causes the outcome of a nondeterministic process. Given that \(C\) is a nondeterministic cause of the outcome, it was possible given the exact same past and laws of nature that \(C\) not cause the outcome (perhaps because it was possible that some other event cause some other outcome)—the probability of this causal transaction’s occurring was less than \(1\). Given that event-causal libertarians maintain that self-determined actions, and thus free actions, must be caused, they are committed to the probability of causation model of nondeterministic causation (cf. Franklin 2018, 25–26). (We note that Balaguer [2010] is skeptical of the above distinction, and it is thus unclear whether he should best be classified as a non-causal or event-causal libertarian, though see Balaguer [2014] for evidence that it is best to treat him as a non-causalist.) Consequently, according to event-causal libertarians, when an agent \(S\) self-determines his choice \(\phi\), then \(S\)’s reasons \(r_1\) nondeterministically cause (in a nondeviant way) \(\phi\), and it was possible, given the past and laws, that \(r_1\) not have caused \(\phi\), but rather some of \(S\)’s other reasons \(r_2\) nondeterministically caused (in a nondeviant way) a different action \(\psi\).

Agent-causal libertarians contend that the event-causal picture fails to capture self-determination, for it fails to accord the agent with a power to settle what she does. Pereboom offers a forceful statement of this worry:

On an event-causal libertarian picture, the relevant causal conditions antecedent to the decision, i.e., the occurrence of certain agent-involving events, do not settle whether the decision will occur, but only render the occurrence of the decision about \(50\%\) probable. In fact, because no occurrence of antecedent events settles whether the decision will occur, and only antecedent events are causally relevant, nothing settles whether the decision will occur. (Pereboom 2014, 32; cf. Watson 1987, 1996; Clarke 2003 [ch. 8], 2011; Griffith 2010; Shabo 2011, 2013; Steward 2012 [ch. 3]; and Schlosser 2014); and for critical assessment, see Clarke 2019.

On the event-causal picture, the agent’s causal contribution to her actions is exhausted by the causal contribution of her reasons, and yet her reasons leave open which decisions she will make, and this seems insufficient for self-determination.

But what more must be added? Agent-causal libertarians maintain that self-determination requires that the agent herself play a causal role over and above the causal role played by her reasons. Some agent-causal libertarians deny that an agent’s reasons play any direct causal role in bringing about an agent’s self-determined actions (Chisholm 1966; O’Connor 2000, ch. 5), whereas others allow or even require that self-determined actions be caused in part by the agent’s reasons (Clarke 2003, ch. 9; Steward 2012, ch. 3). But all agent-causal libertarians insist that exercises of the power of self-determination do not reduce to nondeterministic causation by apt mental states: agent-causation does not reduce to event-causation.

Agent-causal libertarianism seems to capture an aspect of self-determination that neither the above compatibilists accounts nor event-causal libertarian accounts capture. (Some compatibilists even accept this and try to incorporate agent-causation into a compatibilist understanding of free will. See Markosian 1999, 2012; Nelkin 2011.) These accounts reduce the causal role of the self to states and events to which the agent is not identical (even if he is identified with them). But how can self -determination of my actions wholly reduce to determination of my actions by things other than the self? Richard Taylor nicely expresses this intuition: “If I believe that something not identical to myself was the cause of my behavior—some event wholly external to myself, for instance, or even one internal to myself, such as a nerve impulse, volition, or whatnot—then I cannot regard the behavior as being an act of mine, unless I further believed that I was the cause of that external or internal event” (1974, 55; cf. Franklin 2016).

Despite its powerful intuitive pull for some, many have argued that agent-causal libertarianism is obscure or even incoherent. The stock objection used to be that the very idea of agent-causation—causation by agents that is not reducible to causation by mental states and events involving the agent—is incoherent, but this objection has become less common due to pioneering work by Chisholm (1966, 1976), Taylor (1974), O’Connor (2000, 2011), Clarke (2003), and Steward 2012, ch. 8). More common objections now concern, first, how to understand the relationship between agent-causation and an agent’s reasons (or motivations in general), and, second, the empirical adequacy of agent-causal libertarianism. With respect to the first worry, it is widely assumed that the only (or at least best) way to understand reasons-explanation and motivational influence is within a causal account of reasons, where reasons cause our actions (Davidson 1963; Mele 1992). If agent-causal libertarians accept that self-determined actions, in addition to being agent-caused, must also be caused by agents’ reasons that favored those actions, then agent-causal libertarians need to explain how to integrate these causes (for a detailed attempt to do just this, see Clarke 2003, ch. 8). Given that these two causes seem distinct, is it not possible that the agent cause his decision to \(\phi\) and yet the agent’s reasons simultaneously cause an incompatible decision to \(\psi\)? If agent-causal libertarians side-step this difficult question by denying that reasons cause action, then they must explain how reasons can explain and motivate action without causing it; and this has turned out to be no easy task. (For more general attempts to understand reasons-explanation and motivation within a non-causal framework see Schueler 1995, 2003; Sehon 2005). For further discussion see the entry on incompatibilist (nondeterministic) theories of free will .

Finally, we note that some recent philosophers have questioned the presumed difference between event- and agent-causation by arguing that all causation is object or substance causation. They argue that the dominant tendency to understand ‘garden variety’ causal transactions in the world as relations between events is an unfortunate legacy of David Hume’s rejection of substance and causation as basic metaphysical categories. On the competing metaphysical picture of the world, the event or state of an object’s having some property such as mass is its having a causal power, which in suitable circumstances it exercises to bring about a characteristic effect. Applied to human agents in an account of free will, the account suggests a picture on which an agent’s having desires, beliefs, and intentions are rational powers to will particular courses of action, and where the agent’s willing is not determined in any one direction, she wills freely. An advantage for the agent-causalist who embraces this broader metaphysics is ‘ideological’ parsimony. For different developments and defenses of this approach, see Lowe (2008), Swinburne (2013), and O’Connor (2021); and for reason to doubt that a substance-causal metaphysics helps to allay skepticism concerning free will, see Clarke and Reed (2015).

3. Do We Have Free Will?

Most philosophers theorizing about free will take themselves to be attempting to analyze a near-universal power of mature human beings. But as we’ve noted above, there have been free will skeptics in both ancient and (especially) modern times. (Israel 2001 highlights a number of such skeptics in the early modern period.) In this section, we summarize the main lines of argument both for and against the reality of human freedom of will.

There are both a priori and empirical arguments against free will (See the entry on skepticism about moral responsibility ). Several of these start with an argument that free will is incompatible with causal determinism, which we will not rehearse here. Instead, we focus on arguments that human beings lack free will, against the background assumption that freedom and causal determinism are incompatible.

The most radical a priori argument is that free will is not merely contingently absent but is impossible. Nietzsche 1886 [1966] argues to this effect, and more recently it has been argued by Galen Strawson (1986, ch. 2; 1994, 2002). Strawson associates free will with being ‘ultimately morally responsible’ for one’s actions. He argues that, because how one acts is a result of, or explained by, “how one is, mentally speaking” (\(M\)), for one to be responsible for that choice one must be responsible for \(M\). To be responsible for \(M\), one must have chosen to be \(M\) itself—and that not blindly, but deliberately, in accordance with some reasons \(r_1\). But for that choice to be a responsible one, one must have chosen to be such as to be moved by \(r_1\), requiring some further reasons \(r_2\) for such a choice. And so on, ad infinitum . Free choice requires an impossible infinite regress of choices to be the way one is in making choices.

There have been numerous replies to Strawson’s argument. Mele (1995, 221ff.) argues that Strawson misconstrues the locus of freedom and responsibility. Freedom is principally a feature of our actions, and only derivatively of our characters from which such actions spring. The task of the theorist is to show how one is in rational, reflective control of the choices one makes, consistent with there being no freedom-negating conditions. While this seems right, when considering those theories that make one’s free control to reside directly in the causal efficacy of one’s reasons (such as compatibilist reasons-responsive accounts or event-causal libertarianism), it is not beside the point to reflect on how one came to be that way in the first place and to worry that such reflection should lead one to conclude that true responsibility (and hence freedom) is undermined, since a complete distal source of any action may be found external to the agent. Clarke (2003, 170–76) argues that an effective reply may be made by indeterminists, and, in particular, by nondeterministic agent-causal theorists. Such theorists contend that (i) aspects of ‘how one is, mentally speaking’, fully explain an agent’s choice without causally determining it and (ii) the agent himself causes the choice that is made (so that the agent’s antecedent state, while grounding an explanation of the action, is not the complete causal source of it). Since the agent’s exercise of this power is causally undetermined, it is not true that there is a sufficient ‘ultimate’ source of it external to the agent. Finally, Mele (2006, 129–34, and 2017, 212–16) and O’Connor (2009b) suggest that freedom and moral responsibility come in degrees and grow over time, reflecting the fact that ‘how one is, mentally speaking’ is increasingly shaped by one’s own past choices. Furthermore, some choices for a given individual may reflect more freedom and responsibility than others, which may be the kernel of truth behind Strawson’s sweeping argument. (For discussion of the ways that nature, nurture, and contingent circumstances shape our behavior and raise deep issues concerning the extent of our freedom and responsibility, see Levy 2011 and Russell 2017, chs. 10–12.)

A second family of arguments against free will contend that, in one way or another, nondeterministic theories of freedom entail either that agents lack control over their choices or that the choices cannot be adequately explained. These arguments are variously called the ‘Mind’, ‘Rollback’, or ‘Luck’ argument, with the latter admitting of several versions. (For statements of such arguments, see van Inwagen 1983, ch. 4; 2000; Haji 2001; Mele 2006; Shabo 2011, 2013, 2020; Coffman 2015). We note that some philosophers advance such arguments not as parts of a general case against free will, but merely as showing the inadequacy of specific accounts of free will [see, e.g., Griffith 2010].) They each describe imagined cases—individual cases, or comparison of intra- or inter-world duplicate antecedent conditions followed by diverging outcomes—designed to elicit the judgment that the occurrence of a choice that had remained unsettled given all prior causal factors can only be a ‘matter of chance’, ‘random’, or ‘a matter of luck’. Such terms have been imported from other contexts and have come to function as quasi-technical, unanalyzed concepts in these debates, and it is perhaps more helpful to avoid such proxies and to conduct the debates directly in terms of the metaphysical notion of control and epistemic notion of explanation. Where the arguments question whether an undetermined agent can exercise appropriate control over the choice he makes, proponents of nondeterministic theories often reply that control is not exercised prior to, but at the time of the choice—in the very act of bringing it about (see, e.g., Clarke 2005 and O’Connor 2007). Where the arguments question whether undetermined choices can be adequately explained, the reply often consists in identifying a form of explanation other than the form demanded by the critic—a ‘noncontrastive’ explanation, perhaps, rather than a ‘contrastive’ explanation, or a species of contrastive explanation consistent with indeterminism (see, e.g., Kane 1999; Clarke, 2003, ch. 8; and Franklin 2011a; 2018, ch. 5).

We now consider empirical arguments against human freedom. Some of these stem from the physical sciences (while making assumptions concerning the way physical phenomena fix psychological phenomena) and others from neuroscience and psychology.

It used to be common for philosophers to argue that there is empirical reason to believe that the world in general is causally determined, and since human beings are parts of the world, they are too. Many took this to be strongly confirmed by the spectacular success of Isaac Newton’s framework for understanding the universe as governed everywhere by fairly simple, exceptionless laws of motion. But the quantum revolution of the early twentieth century has made that ‘clockwork universe’ image at least doubtful at the level of basic physics. While quantum mechanics has proven spectacularly successful as a framework for making precise and accurate predictions of certain observable phenomena, its implications for the causal structure of reality is still not well understood, and there are competing indeterministic and deterministic interpretations. See the entry on quantum mechanics for detailed discussion.) It is possible that indeterminacy on the small-scale, supposing it to be genuine, ‘cancels out’ at the macroscopic scale of birds and buildings and people, so that behavior at this scale is virtually deterministic. But this idea, once common, is now being challenged empirically, even at the level of basic biology. Furthermore, the social, biological, and medical sciences, too, are rife with merely statistical generalizations. Plainly, the jury is out on all these inter-theoretic questions. But that is just a way to say that current science does not decisively support the idea that everything we do is pre-determined by the past, and ultimately by the distant past, wholly out of our control. For discussion, see Balaguer (2009), Koch (2009), Roskies (2014), Ellis (2016).

Maybe, then, we are subject to myriad causal influences, but the sum total of these influences doesn’t determine what we do, they only make it more or less likely that we’ll do this or that. Now some of the a priori no-free-will arguments above center on nondeterministic theories according to which there are objective antecedent probabilities associated with each possible choice outcome. Why objective probabilities of this kind might present special problems beyond those posed by the absence of determinism has been insufficiently explored to date. (For brief discussion, see Vicens 2016 and O’Connor 2016.) But one philosopher who argues that there is reason to hold that our actions, if undetermined, are governed by objective probabilities and that this fact calls into question whether we act freely is Derk Pereboom (2001, ch. 3; 2014, ch. 3). Pereboom notes that our best physical theories indicate that statistical laws govern isolated, small-scale physical events, and he infers from the thesis that human beings are wholly physically composed that such statistical laws will also govern all the physical components of human actions. Finally, Pereboom maintains that agent-causal libertarianism offers the correct analysis of free will. He then invites us to imagine that the antecedent probability of some physical component of an action occurring is \(0.32\). If the action is free while not violating the statistical law, then, in a scenario with a large enough number of instances, this action would have to be freely chosen close to \(32\) percent of the time. This leads to the problem of “wild coincidences”:

if the occurrence of these physical components were settled by the choices of agent-causes, then their actually being chosen close to 32 percent of the time would amount to a coincidence no less wild than the coincidence of possible actions whose physical components have an antecedent probability of about 0.99 being chosen, over large enough number of instances, close to 99 percent of the time. The proposal that agent-caused free choices do not diverge from what the statistical laws predict for the physical components of our actions would run so sharply counter to what we would expect as to make it incredible. (2014, 67)

Clarke (2010) questions the implicit assumption that free agent-causal choices should be expected not to conform to physical statistical laws, while O’Connor (2009a) challenges the more general assumption that freedom requires that agent-causal choices not be governed by statistical laws of any kind, as they plausibly would be if the relevant psychological states/powers are strongly emergent from physical states of the human brain. Finally, Runyan 2018 argues that Pereboom’s case rests on an implausible empirical assumption concerning the evolution of objective probabilities concerning types of behavior over time.

Pereboom’s empirical basis for free will skepticism is very general. Others see support for free will skepticism from specific findings and theories in the human sciences. They point to evidence that we can be unconsciously influenced in the choices we make by a range of factors, including ones that are not motivationally relevant; that we can come to believe that we chose to initiate a behavior that in fact was artificially induced; that people subject to certain neurological disorders will sometimes engage in purposive behavior while sincerely believing that they are not directing them. Finally, a great deal of attention has been given to the work of neuroscientist Benjamin Libet (2002). Libet conducted some simple experiments that seemed to reveal the existence of ‘preparatory’ brain activity (the ‘readiness potential’) shortly before a subject engages in an ostensibly spontaneous action. (Libet interpreted this activity as the brain’s ‘deciding’ what to do before we are consciously settled on a course of action.) Wegner (2002) surveys all of these findings (some of which are due to his own work as a social psychologist) and argues on their basis that the experience of conscious willing is ‘an illusion’. For criticism of such arguments, see Mele (2009); Nahmias (2014); Mudrik et al. (2022); and several contributions to Maoz and Sinnott-Armstrong (2022). Libet’s interpretation of the readiness potential has come in for severe criticism. After extensive subsequent study, neuroscientists are uncertain what it signifies. For thorough review of the evidence, see Schurger et al. (2021).

While Pereboom and others point to these empirical considerations in defense of free will skepticism, other philosophers see them as reasons to favor a more modest free will agnosticism (Kearns 2015) or to promote revisionism about the ‘folk idea of free will’ (Vargas 2013; Nichols 2015).

If one is a compatibilist, then a case for the reality of free will requires evidence for our being effective agents who for the most part are aware of what we do and why we are doing it. If one is an incompatibilist, then the case requires in addition evidence for causal indeterminism, occurring in the right locations in the process leading from deliberation to action. Many think that we already have third-personal ‘neutral’ scientific evidence for much of human behavior’s satisfying modest compatibilist requirements, such as Fischer and Ravizza’s reasons-responsiveness account. However, given the immaturity of social science and the controversy over whether psychological states ‘reduce’ in some sense to underlying physical states (and what this might entail for the reality of mental causation), this claim is doubtful. A more promising case for our satisfying (at least) compatibilist requirements on freedom is that effective agency is presupposed by all scientific inquiry and so cannot rationally be doubted (which fact is overlooked by some of the more extreme ‘willusionists’ such as Wegner).

However, effective intervention in the world (in scientific practice and elsewhere) does not (obviously) require that our behavior be causally undetermined, so the ‘freedom is rationally presupposed’ argument cannot be launched for such an understanding of freedom. Instead, incompatibilists usually give one of the following two bases for rational belief in freedom (both of which can be given by compatibilists, too).

First, philosophers have long claimed that we have introspective evidence of freedom in our experience of action, or perhaps of consciously attended or deliberated action. Augustine and Scotus, discussed earlier, are two examples among many. In recent years, philosophers have been more carefully scrutinizing the experience of agency and a debate has emerged concerning its contents, and in particular whether it supports an indeterministic theory of human free action. For discussion, see Deery et al. (2013), Guillon (2014), Horgan (2015), and Bayne (2017).

Second, philosophers (e.g., Reid 1788 [1969], Swinburne 2013) sometimes claim that our belief in the reality of free will is epistemically basic, or reasonable without requiring independent evidential support. Most philosophers hold that some beliefs have that status, on pain of our having no justified beliefs whatever. It is controversial, however, just which beliefs do because it is controversial which criteria a belief must satisfy to qualify for that privileged status. It is perhaps necessary that a basic belief be ‘instinctive’ (unreflectively held) for all or most human beings; that it be embedded in regular experience; and that it be central to our understanding of an important aspect of the world. Our belief in free will seems to meet these criteria, but whether they are sufficient is debated. (O’Connor 2019 proposes that free will belief is epistemically basic but defeasible.) Other philosophers defend a variation on this stance, maintaining instead that belief in the reality of moral responsibility is epistemically basic, and that since moral responsibility entails free will, or so it is claimed, we may infer the reality of free will (see, e.g., van Inwagen 1983, 206–13).

4. Theological Wrinkles

A large portion of Western philosophical work on free will has been written within an overarching theological framework, according to which God is the ultimate source, sustainer, and end of all else. Some of these thinkers draw the conclusion that God must be a sufficient, wholly determining cause for everything that happens; all of them suppose that every creaturely act necessarily depends on the explanatorily prior, cooperative activity of God. It is also commonly presumed by philosophical theists that human beings are free and responsible (on pain of attributing evil in the world to God alone, and so impugning His perfect goodness). Hence, those who believe that God is omni-determining typically are compatibilists with respect to freedom and (in this case) theological determinism. Edwards (1754 [1957]) is a good example. But those who suppose that God’s sustaining activity (and special activity of conferring grace) is only a necessary condition on the outcome of human free choices need to tell a more subtle story, on which omnipotent God’s cooperative activity can be (explanatorily) prior to a human choice and yet the outcome of that choice be settled only by the choice itself. For important medieval discussions—the apex of philosophical reflection on theological concerns—see the relevant portions of Al-Ghazali IP , Aquinas BW and Scotus QAM . Three positions (given in order of logical strength) on God’s activity vis-à-vis creaturely activity were variously defended by thinkers of this area: mere conservationism, concurrentism, and occasionalism. These positions turn on subtle distinctions, which have recently been explored by Freddoso (1988), Kvanvig and McCann (1991), Koons (2002), Grant (2016 and 2019), and Judisch (2016).

Many suppose that there is a challenge to human freedom stemming not only from God’s perfect power but also from his perfect knowledge. A standard argument for the incompatibility of free will and causal determinism has a close theological analogue. Recall van Inwagen’s influential formulation of the ‘Consequence Argument’:

If determinism is true, then our acts are the consequences of the laws of nature and events in the remote past. But it is not up to us what went on before we were born, and neither is it up to us what the laws of nature are. Therefore, the consequences of these things (including our present acts) are not up to us. (van Inwagen 1983, 16)

And now consider an argument that turns on God’s comprehensive and infallible knowledge of the future:

If infallible divine foreknowledge is true, then our acts are the (logical) consequences of God’s beliefs in the remote past. (Since God cannot get things wrong, his believing that something will be so entails that it will be so.) But it is not up to us what beliefs God had before we were born, and neither is it up to us that God’s beliefs are necessarily true. Therefore, the consequences of these things (including our present acts) are not up to us.

An excellent discussion of these arguments in tandem and attempts to point to relevant disanalogies between causal determinism and infallible foreknowledge may be found in the introduction to Fischer (1989). See also the entry on foreknowledge and free will.

Another issue concerns how knowledge of God, the ultimate Good, would impact human freedom. Many philosophical theologians, especially the medieval Aristotelians, were drawn to the idea that human beings cannot but will that which they take to be an unqualified good. (As noted above, Duns Scotus is an exception to this consensus, as were Ockham and Suarez subsequently, but their dissent is limited.) Hence, if there is an afterlife, in which humans ‘see God face to face,’ they will inevitably be drawn to Him. Following Pascal, Murray (1993, 2002) argues that a good God would choose to make His existence and character less than certain for human beings, for the sake of preserving their freedom. (He will do so, the argument goes, at least for a period of time in which human beings participate in their own character formation.) If it is a good for human beings that they freely choose to respond in love to God and to act in obedience to His will, then God must maintain an ‘epistemic distance’ from them lest they be overwhelmed by His goodness or power and respond out of necessity, rather than freedom. (See also the other essays in Howard-Snyder and Moser 2002.)

If it is true that God withholds our ability to be certain of his existence for the sake of our freedom, then it is natural to conclude that humans will lack freedom in heaven. And it is anyways common to traditional Jewish, Christian, and Muslim theologies to maintain that humans cannot sin in heaven. Even so, traditional Christian theology at least maintains that human persons in heaven are free. What sort of freedom is in view here, and how does it relate to mundane freedom? Two good recent discussions of these questions are Pawl and Timpe (2009) and Tamburro (2017).

Finally, there is the question of the freedom of God himself. Perfect goodness is an essential, not acquired, attribute of God. God cannot lie or be in any way immoral in His dealings with His creatures (appearances notwithstanding). Unless we take the minority position on which this is a trivial claim, since whatever God does definitionally counts as good, this appears to be a significant, inner constraint on God’s freedom. Did we not contemplate immediately above that human freedom would be curtailed by our having an unmistakable awareness of what is in fact the Good? And yet is it not passing strange to suppose that God should be less than perfectly free?

One suggested solution to this puzzle takes as its point of departure the distinction noted in section 2.3 between the ability to do otherwise and sourcehood, proposing that the core metaphysical feature of freedom is being the ultimate source, or originator, of one’s choices. For human beings or any created persons who owe their existence to factors outside themselves, the only way their acts of will could find their ultimate origin in themselves is for such acts not to be determined by their character and circumstances. For if all my willings were wholly determined, then if we were to trace my causal history back far enough, we would ultimately arrive at external factors that gave rise to me, with my particular genetic dispositions. My motives at the time would not be the ultimate source of my willings, only the most proximate ones. Only by there being less than deterministic connections between external influences and choices, then, is it be possible for me to be an ultimate source of my activity, concerning which I may truly say, “the buck stops here.”

As is generally the case, things are different on this point in the case of God. As Anselm observed, even if God’s character absolutely precludes His performing certain actions in certain contexts, this will not imply that some external factor is in any way a partial origin of His willings and refrainings from willing. Indeed, this would not be so even if he were determined by character to will everything which He wills. God’s nature owes its existence to nothing. Thus, God would be the sole and ultimate source of His will even if He couldn’t will otherwise.

Well, then, might God have willed otherwise in any respect? The majority view in the history of philosophical theology is that He indeed could have. He might have chosen not to create anything at all. And given that He did create, He might have created any number of alternatives to what we observe. But there have been noteworthy thinkers who argued the contrary position, along with others who clearly felt the pull of the contrary position even while resisting it. The most famous such thinker is Leibniz (1710 [1985]), who argued that God, being both perfectly good and perfectly powerful, cannot fail to will the best possible world. Leibniz insisted that this is consistent with saying that God is able to will otherwise, although his defense of this last claim is notoriously difficult to make out satisfactorily. Many read Leibniz, malgré lui , as one whose basic commitments imply that God could not have willed other than He does in any respect.

One might challenge Leibniz’s reasoning on this point by questioning the assumption that there is a uniquely best possible Creation (an option noted by Adams 1987, though he challenges instead Leibniz’s conclusion based on it). One way this could be is if there is no well-ordering of worlds: some pairs of worlds are sufficiently different in kind that they are incommensurate with each other (neither is better than the other, nor are they equal) and no world is better than either of them. Another way this could be is if there is no upper limit on goodness of worlds: for every possible world God might have created, there are others (infinitely many, in fact) which are better. If such is the case, one might argue, it is reasonable for God to arbitrarily choose which world to create from among those worlds exceeding some threshold value of overall goodness.

However, William Rowe (2004) has countered that the thesis that there is no upper limit on goodness of worlds has a very different consequence: it shows that there could not be a morally perfect Creator! For suppose our world has an on-balance moral value of \(n\) and that God chose to create it despite being aware of possibilities having values higher than \(n\) that He was able to create. It seems we can now imagine a morally better Creator: one having the same options who chooses to create a better world. For critical replies to Rowe, see Almeida (2008, ch. 1), Kray (2010), and Zimmerman (2018).

Finally, Norman Kretzmann (1997, 220–25) has argued in the context of Aquinas’s theological system that there is strong pressure to say that God must have created something or other, though it may well have been open to Him to create any of a number of contingent orders. The reason is that there is no plausible account of how an absolutely perfect God might have a resistible motivation—one consideration among other, competing considerations—for creating something rather than nothing. (It obviously cannot have to do with any sort of utility, for example.) The best general understanding of God’s being motivated to create at all—one which in places Aquinas himself comes very close to endorsing—is to see it as reflecting the fact that God’s very being, which is goodness, necessarily diffuses itself. Perfect goodness will naturally communicate itself outwardly; God who is perfect goodness will naturally create, generating a dependent reality that imperfectly reflects that goodness. Wainwright (1996) discusses a somewhat similar line of thought in the Puritan thinker Jonathan Edwards. Alexander Pruss (2016), however, raises substantial grounds for doubt concerning this line of thought; O’Connor (2022) offers a rejoinder.

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How to cite this entry . Preview the PDF version of this entry at the Friends of the SEP Society . Look up topics and thinkers related to this entry at the Internet Philosophy Ontology Project (InPhO). Enhanced bibliography for this entry at PhilPapers , with links to its database.
  • The Determinism and Freedom Philosophy Website , edited by Ted Honderich (University College London)
  • Bibliography on Free Will , at philpapers.org.

action | agency | blame | causation: the metaphysics of | compatibilism | determinism: causal | fatalism | freedom: divine | free will: divine foreknowledge and | incompatibilism: (nondeterministic) theories of free will | incompatibilism: arguments for | moral responsibility | quantum mechanics | skepticism: about moral responsibility

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An Essay on Free will and Determinism

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Paul Carron

What are the freedom-relevant conditions necessary for someone to be a morally responsible person? I examine several key authors beginning with Harry Frankfurt that have contributed to this debate in recent years, and then look back to the writings or Søren Kierkegaard to provide a solution to the debate. In this project I investigate the claims of semi-compatibilism and argue that while its proponents have identified a fundamental question concerning free will and moral responsibility—namely, that the agential properties necessary for moral responsibility ascriptions are found in scenarios where the agent acts on her own as opposed to her action resulting from freedom undermining external causes such as manipulation, phobias, etc.—they have failed to show that the freedom-relevant agential properties identified in those actual-sequence scenarios are compatible with causal determinism. My argument is that only a voluntarist-libertarian theory can adequately account for the kinds of cases that the semicompatibilist identify. I argue that there are three freedom-relevant conditions necessary for someone to be a morally responsible person: a hierarchical understanding of human desires [specifically and mental states generally], an incompatibilist (non-deterministic) understanding of human action, and a historical understanding of character development. The ability to reflect critically about one’s own desires and emotions, and thus to have a kind of self-knowledge and understanding with regard to the springs of one’s own actions, is required to make it possible for the agent to be the “source” of her own actions and character. The non-deterministic understanding of human action is needed for a similar reason: if determinism is true, then every action a person performs can be ultimately traced to and exhaustively explained in terms of factors outside the agent’s control, thus making the agent’s responsibility for his actions an illusion. And finally,human nature must be such that, over time, one’s choices leave a dispositional residue self-understanding and motivation in the person’s self, out of which, in mature understanding and motivation, the person acts as a fully responsible agent.

essay on free will and determinism

Matthew Talbert

Most people would agree that a small child, or a cognitively impaired adult, is less responsible for their actions, good or bad, than an unimpaired adult. But how do we explain this difference, and how far can anyone be praised or blamed for what they have done? This introductory text explores some of the key questions shaping current philosophical debates about moral responsibility, including: • What is free will and is it required for moral responsibility? • Can a bad upbringing undermine blameworthiness? • Can we be blamed for having bad characters? • Is it fair to blame people for doing what they believe is right? • Are psychopaths open to blame? • Are there grounds for skepticism about moral responsibility?

Christian Rostboll

Christian Rostbøll

Behavioral Sciences & the Law

Patrick Grim

Rick Repetti

I argue that central Buddhist tenets and meditation methodology support a view of free will similar to Harry Frankfurt’s optimistic view and contrary to Galen Strawson’s pessimistic view. For Frankfurt, free will involves a relationship between actions, voli- tions, and “metavolitions” (volitions about volitions): simplifying greatly, volitional actions are free if the agent approves of them. For Buddhists, mental freedom involves a relationship between mental states and “metamental” states (mental attitudes toward mental states): simplifying greatly, one has mental freedom if one is able to control one’s mental states, and to the extent one has mental freedom when choosing, one has free will. Philosophical challenges to free will typically question whether it is compatible with “determinism,” the thesis of lawful universal causation. Both Frankfurt’s metavolitional approval and the Buddhist’s me- tamental control are consistent with determinism. Strawson has argued, however, that free will is impossible, determinism not- withstanding, because one’s choice is always influenced by one’smental state. I argue, however, that Buddhist meditation culti- vates control over mental states that undermine freedom, whether they are deterministic or not, making both mental free- dom and free will possible. The model I develop is only a sketch of a minimally risky theory of free will, but one that highlights the similarities and differences between Buddhist thought on this subject and relevantly-related Western thought and has explana- tory promise.

matt osolinski

Matteo Grasso

The problem of free will is deeply linked with the causal relevance of mental events. The causal exclusion argument claims that, in order to be causally relevant, mental events must be identical to physical events. However, Gibb has recently criticized it, suggesting that mental events are causally relevant as double preventers. For Gibb, mental events enable physical effects to take place by preventing other mental events from preventing a behaviour to take place. The role of mental double preventers is hence similar to what Libet names free won’t, namely the ability to veto an action initiated unconsciously by the brain. In this paper I will propose an argument against Gibb’s account, the causal irrelevance argument, showing that Gibb’s proposal does not overcome the objection of systematic overdetermination of causal relevance, because mental double preventers systematically overdetermine physical double preventers, and therefore mental events are causally irrelevant.

Journal of Philosophy of Education

Johan Dahlbeck

In this Spinozist defence of the educational promotion of students’ autonomy I argue for a deterministic position where freedom of will is deemed unrealistic in the metaphysical sense, but important in the sense that it is an undeniable psychological fact. The paper is structured in three parts. The first part investigates the concept of autonomy from different philosophical points of view, looking especially at how education and autonomy intersect. The second part focuses on explicating the philosophical position of causal determinism and it seeks to open up a way to conceive of education for autonomy without relying on the notion of free will in a metaphysical sense. The concluding part attempts to outline a Spinozistic understanding of education for autonomy where autonomy is grounded in the student’s acceptance and understanding of the necessary constraints of natural causation rather than processes of self-causation.

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Free Will vs Determinism

There is an age-old debate in philosophy about whether or not we are the authors of our story, the captains of our ship, or our story is written for us, either by some all knowing author that oversees everything we know, or by the natural world around us.

Today I’ll take you through the both sides of the argument where we’ll explore free will, determinism and it’s many different forms and finally if you stick around to the end, or just want to skip ahead, we’ll explore how both sides of the argument can be used to help us get a better understanding for what we can control, what we can’t and how this clarification can help us live better, happier, and more resilient lives.

This is the debate of free will vs determinism. Where free will suggests that you and I have absolute control over the path of our life, we are at the helm, plotting the course and making the decisions on how best to navigate the seas.

The other side of the argument suggests that we don’t have as much autonomy over our life as we might think – our genetics are predetermined, meaning that we are predisposed to think and act in certain ways due to our biology, neurochemistry, and physical attributes, all of which will be unique to you. On top of this, the determinism argument suggests that we are all products of our environment to some extent, we are influenced by culture, our company, our job, education, books we read, music we listen to, movies we watch. Even our gut bacteria can influence our mood and energy. Our choices are therefore the result of factors completely outside of our control, thereby eliminating the ability for one to have free will.

So the deterministic view of human life would argue that, while there is an illusion of free will, the decisions we make are simply the result of all that has come before us, like the last domino to fall in a chain that stretched back to the beginning of existence.

Whichever side of the argument you fall on, there are some profound realisations that come from both so lets dig a little deeper under the surface of the two.

Free will is generally thought of as the capacity for a person to consciously and deliberately decide between two or more courses of action without an influence from the outside world being so strong as to make the choice either impossible or make the choice for them.

When we have free will we are free to choose our path, we have the responsibility and stewardship of our life that allows for us to forge whatever path we decide is best at the time. This freedom comes as a double edged sword – while we have the ability to choose, and with the ability to choose comes a great deal of freedom, we also have to accept responsibility for whatever we do. We have a moral responsibility to do the right thing, whatever right and wrong might mean to the individual.

In a world in which free will is present, the individual must accept both praise for their accomplishments and blame for their shortcomings. We are held to account for the good and the bad.

Hard Determinism:

In contrast, hard determinism is the belief that free will is not possible because the choice of an individual is pre-determined by the events preceding it. Determinism suggests that only one course of action is possible regardless of how many choices there appear to be – if I’m trying to decide between rum and raisin flavoured ice cream, vanilla, mint chocolate chip, lemon, strawberry or coffee, there is only one choice and that choice is determined by all of the events in my life leading up to that point. Strictly speaking the choice is determined by all of the events since the dawn of time leading up to that point, but you get the idea. To hard determinists, things are causally inevitable, thereby eliminating the presence of free will. This is also called causal determinism.

Hard determinism, and those that believe it to be true can be split into two groups – logical determinism and theological determinists.

Logical determinists are those who believe that a system with governing laws can be predicted if the starting conditions are known. For example, if we want to simulate a crash test on a car, we can use a computer to input the starting conditions, the speed, direction, shape of the vehicle, mass of the vehicle and the material properties, and from those conditions we get a simulation of the system. Logical determinists believe that everything that happens in the system of the universe happens because of the conditions at the beginning. You nor I can do anything to change the flow of events, we’re just playing our part. As such, free will is impossible, because our choices can only be those that satisfy the conditions of the system.

Theological determinism suggests that a conscious being has pre-determined the unfolding of the universe and therefore you and I are simply acting out their grand plan. There is also some crossover here to fate or destiny.

Soft Determinism:

Soft determinism holds that free will and determinism are indeed compatible with one another. Sometimes soft determinism even goes so far as to say that determinism is necessary for free will, suggesting that choice involves preference and that preference is a form of determinism, to me this just confuses the argument a little.

Soft determinists, also known as compatibilists, therefore see the free will vs determinism debate as a false dilemma. The difficulty with this view is that where both free will and determinism both co-exists the line at which one ends and the other begins can be unclear.

The classical compatibilists view free will as the freedom to act, and they see a person as having free will if they have the choice of two or more courses of action and have the ability to choose between two or more without being physically prevented.

In another camp, the contemporary compatibilists believe free will to be one’s ability to apply reason and judgement to inform action – where a person can make a conscious choice on their course of action by weighing the options against one another based on what they believe about each one.

Final Thoughts:

I think the truth is somewhere in the middle, and that there is merit to the nature vs nurture argument. Each and every one of us will, to varying degrees, be influenced by our environment, our genetics, and our unique way our brain will process stimulus.

I also believe that free will is a sliding scale – the more we learn about the world around us and the more we work on ourselves, understand our subconscious beliefs, look at how our environment might influence us, develop the ability to view our thoughts and emotions in the moment, and generally become more mature and well rounded, the better we are able to limit the influence the world exerts on our decision making.

Free will can be seen as one’s ability to act unhindered by external influence. Therefore, I would argue that free will increases as wisdom increases. By that I mean that, where wisdom is our ability to view the world as it is, wisdom removes the ability for external events and events outside our control to influence our actions. Wisdom does this through both the understanding of a thing, and the understanding of how a thing might influence our decision making – these two in combination protect us from having our views, behaviours and beliefs influenced, and by extension protect or free will from being compromised.

However, the hard determinists would say that if one’s wisdom was to develop, it would only do so because of the unravelling of events leading up to that point, and that the growth of the individual was already determined by those events. If I’m honest, I don’t think I’d be able to logically disagree with them, however I do believe that it is in our best interests to behave as if we do have free will and that we are responsible for the decisions we make. If not, we risk falling into nihilism and the belief that nothing means anything. We also run the risk of denying all responsibility for our actions which can be a very damaging way to live life.

Morality, Ethics and Responsibility:

One last point I’ll make on determinism is that if we accept that everything a person does is predetermined by past events, and that as a result free will does not exist, we run into a great number of issue regarding morality, punishment, blame and credit.

Those who are successful and who have accomplished great things, often through hard sacrifice, are no longer responsible for their efforts.

On the other side of the coin, those who have done terrible things, and caused great harm to people have only done so because they are playing their part on the predetermined stage of life and are to some extent free of blame. Arguably these people are to be pitied, not judged.

Regardless of whether or not we believe in free will, there are deep implications on both sides of the argument that are worth thinking about.

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Free Will vs Determinism (Debate in Psychology)

practical psychology logo

Do you believe in free will? Do you freely choose to make all of your decisions?

These are some big questions, and the answers from philosophers and psychologists may upset you. And it won’t help if I tell you that your upset feelings are not something that you chose to feel, either.

But that's the nature of psychology's biggest debate: free will and determinism.

What Is Free Will Vs. Determinism?

Psychologists have spent centuries debating how much control humans have over their thoughts, emotions, and actions. On one side of the spectrum is complete free will; on the other side is a world where everything is determined for us before it happens. 

determinism

What Is Free Will?

You may have heard the term “free will” before. It comes up quite a bit in the Christian religion - many Christians are taught that God gave them the free will to sin or not to sin. In psychology and philosophy, free will isn’t a gift from God but just how the world operates.

Examples of Free Will

We feel free when we decide to go to the park or buy a new backpack. After all, we had the options of going to the swimming pool or saving our money. Free will is the ability to make a choice when other options are present. Nothing is predetermined. Instead, we create our own destiny and have the power to make any decision at any given time.

free will

Can Free Will and Determinism Coexist?

You may believe that free will cannot exist in a deterministic universe. You may believe that free will and determinism are completely separate and that free will reigns supreme. In this case, you would consider yourself a libertarian free will. (This has nothing to do with the political party.)

However, it’s easy to argue that free will doesn’t really extend beyond human behavior. Certain chemicals will react when they interact with other chemicals - they don’t have the free will to do otherwise. When lightning strikes, thunder doesn’t have the option of taking the day off. All of these physical factors could also limit our choices.

But according to free will, there is a difference between physical causation and agent causation. Not everything is completely random, however, we have the ability to take control (as an agent) and start a new causal chain of events.

As you’ll learn, it’s easy to argue against free will. But there is certainly something to be said for the fact that when we decide to go skateboarding or have breakfast for dinner, we feel like we are in complete control.

But are we?

dominos falling

What Is Determinism?

Now let’s talk about determinism. If free will lives on one end of a spectrum, determinism lives at the completely opposite end. Determinism is the idea that we have no control over our actions. Instead, internal and external factors determine the choices that we make. Our behavior is completely predictable. We have no sense of personal responsibility, because all of our actions are dictated by other things.

Some of the things that cause is to act are external: weather, media, our parents, etc. Some of these things are internal. We’ll go more into that a bit later.

This can make us feel uncomfortable, sure. But start to think about some of the decisions you made in the past week. Were they caused by something before it? Most likely, yes. Maybe you decided not to play baseball because it was raining outside or because you left your cleats at a friend’s house. Or you left a party early because your stomach hurt. You paid rent because you signed a lease because you were taught that it was important to live in a home.

Studies on Determinism in Psychology

The causes of our actions can go all the way back to our childhood. Take Bandura’s Bobo Doll experiment . Children either observed an adult hitting a Bobo doll or being gentle with the Bobo Doll. The children did not choose which adult they would be observing. The children who observed the aggressive adult were more likely to be aggressive. This experiment was one of many that shaped Behaviorism and linked the “cause” of certain actions and behaviors to conditioning. Ivan Pavlov was able to make dogs uncontrollably drool through conditioning. What have we been conditioned to do?

What Causes Determinism?

There are a few factors that you can play around with to pinpoint the causes of your actions and decisions. Some psychologists believe that your actions are caused by a combination of factors, including:

  • Temperaments

Let’s use the example of buying a backpack. You believe that a backpack would be a worthy investment and that it is superior to another type of bag. You desire a backpack for yourself after carrying around a ripped bag and seeing everyone at work with nice backpacks. At the time you decide to buy, your temperament is pleasant and you’re in the mood to do some shopping.

A similar theory about our decisions and prompts can be found in Tiny Habits. This book, written by Stanford researcher BJ Fogg, discusses his Behavior Model. He believes behaviors are caused by:

It’s easy to see the similarities between these two.

Different Levels of Determinism

If you’ve been on my page before, you know how powerful beliefs are. You also know that it’s entirely possible to change your beliefs and change the course of your life. Are these changes also pre-determined, or are they something that we can control through free will?

You don’t have to answer that by choosing one end of the spectrum. There are ideas that blend both free will and determinism to form theories that aren’t so extreme.

Soft Determinism

One of these ideas is soft determinism. Soft determinism is the idea that all of our actions are predetermined or self-determined. The difference is that self-determined actions, or actions caused by internal factors, are considered free. If you believe that the choice to knock out limiting beliefs is your choice, then you probably feel more comfortable with the idea of soft determinism.

Compatibilism

The idea that free will and determinism can exist together is called compatibilism. When thinking about our ability to make our own choices versus the choices that are pre-determined for us, compatibilism seems like a feel-good compromise. But it doesn’t always help philosophers and psychologists when thinking about responsibility. When are we responsible for our actions? Can internal factors, like a mental illness or intoxication, free us from responsibility? How does that work when someone chooses to alter these factors? Or did they really make that choice in the first place?

We Don't Have All the Answers

Want to hear more thoughts on free will vs. determinism? Psychologists, philosophers, and even Reddit users continue to weigh into this debate.

Quotes on Free Will and Determinism

  • "Man, what are you talking about? Me in chains? You may fetter my leg but my will, not even Zeus himself can overpower.” -Epictetus
  • "Though I cannot tell why it was exactly that those stage managers, the Fates, put me down for this shabby part of a whaling voyage, when others were set down for magnificent parts in high tragedies, and short and easy parts in genteel comedies, and jolly parts in faces—though I cannot tell why this was exactly; yet, now that I recall all the circumstances, I think I can see a little into the springs and motives which being cunningly presented to me under various disguises, induced me to set about performing the part I did, besides cajoling me into the delusion that it was a choice resulting from my own unbiased freewill and discriminating judgment.” - Herman Melville,  Moby Dick
  • "For we do not run to Christ on our feet but by faith; not with the movement of the body, but with the freewill of the heart. Think not that thou art drawn against thy will: the mind can be drawn by love.” - Augustine of Hippo
  • "Humans have an amazing capacity to believe in contradictory things. For example, to believe in an omnipotent and benevolent God but somehow excuse Him from all the suffering in the world. Or our ability to believe from the standpoint of law that humans are equal and have free will and from biology that humans are just organic machines." - Yuval Noah Harari

The Debate Continues On Reddit!

Below are just a few thoughts from Reddit users on the entp subreddit!

u/Destrh0 said : 

" There is no such thing as actual free will, only a remarkable facsimile of free will. At our core, we are truly unable to make any completely free choice. It is tantamount to being able to make a completely random decision. We aren't even consciously aware of any decision being made until well after it has been made. And anyone with severe PTSD will tell you that they really don't have a choice in a lot of their reactions. Free will is a joke." 

They were met with a rebuttal from u/ENTP-one: " I actually thought about it a lot lately. I come up with an thesis that to stop everything being pre descent you have to do something only from the need of changing the path. If your 100% you want to do something not doing it and choosing something that you 100% not wanna do will change the destination. Of course the idea only works if what's predestination does not account for you knowing it and actively doing something just to mess it up. But at the moment you do it the new path is created and again we are stuck in this predestined path." 

u/Musikcookie said:

"I believe in both. Humans have this weird conception, that free will would somehow be apart from the world it exits. But what would this even mean? Even apart from our world a free will will have to be based on what happens in this world, so it would still run into the same problems. This is because a free will needs to have some sort of logic to it. If we stop setting unreasonably high bars for what a “free will” has to accomplish, we can see, that our complex ability to change things can pass as a free will." 

u/fridge_escaped said:

"I have to do what any self-respecting ENTP would do, when proposed two options: provide a third (albeit popular one). I believe that we have both, but on different scales. From my surface knowledge of statistical mechanics and chaos theory even in completely chaotic environment we can define a trend, which the system follows, but locally its actions could be totally non-deterministic. So we have an option to choose what path to take, but in the end most of this choices lead us to singular ending.

Quick tangent there: we are always "governed by internal or external forces we cannot control" - physics provides tons of examples. I think what matters is what you do in the face of circumstances you cannot change. You can always settle for obvious options and weep "The system is rigged!", or you can try to find/make a way. Isn't it who we are?"

Want to read the whole debate? You can, on Reddit!

There is a lot to unpack when we think about free will and determinism. There is no definite answer that everyone can agree on. But that is why we continue to observe behavior, conduct experiments, and study how humans behave and make choices.

Related posts:

  • William Glasser Biography - Contributions To Psychology
  • Choice Theory (Definition + Examples)
  • The Mind Body Debate in Psychology
  • Behavioral Psychology
  • Albert Bandura (Biography + Experiments)

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Why the Classical Argument Against Free Will Is a Failure

essay on free will and determinism

In the last several years, a number of prominent scientists have claimed that we have good scientific reason to believe that there’s no such thing as free will — that free will is an illusion. If this were true, it would be less than splendid. And it would be surprising, too, because it really seems like we have free will. It seems that what we do from moment to moment is determined by conscious decisions that we freely make.

We need to look very closely at the arguments that these scientists are putting forward to determine whether they really give us good reason to abandon our belief in free will. But before we do that, it would behoove us to have a look at a much older argument against free will — an argument that’s been around for centuries.

essay on free will and determinism

The older argument against free will is based on the assumption that determinism is true. Determinism is the view that every physical event is completely caused by prior events together with the laws of nature. Or, to put the point differently, it’s the view that every event has a cause that makes it happen in the one and only way that it could have happened.

If determinism is true, then as soon as the Big Bang took place 13 billion years ago, the entire history of the universe was already settled. Every event that’s ever occurred was already predetermined before it occurred. And this includes human decisions. If determinism is true, then everything you’ve ever done — every choice you’ve ever made — was already predetermined before our solar system even existed. And if this is true, then it has obvious implications for free will.

Suppose that you’re in an ice cream parlor, waiting in line, trying to decide whether to order chocolate or vanilla ice cream. And suppose that when you get to the front of the line, you decide to order chocolate. Was this choice a product of your free will? Well, if determinism is true, then your choice was completely caused by prior events. The immediate causes of the decision were neural events that occurred in your brain just prior to your choice. But, of course, if determinism is true, then those neural events that caused your decision had physical causes as well; they were caused by even earlier events — events that occurred just before they did. And so on, stretching back into the past. We can follow this back to when you were a baby, to the very first events of your life. In fact, we can keep going back before that, because if determinism is true, then those first events were also caused by prior events. We can keep going back to events that occurred before you were even conceived, to events involving your mother and father and a bottle of Chianti.

If determinism is true, then as soon as the Big Bang took place 13 billion years ago, the entire history of the universe was already settled.

So if determinism is true, then it was already settled before you were born that you were going to order chocolate ice cream when you got to the front of the line. And, of course, the same can be said about all of our decisions, and it seems to follow from this that human beings do not have free will.

Let’s call this the classical argument against free will . It proceeds by assuming that determinism is true and arguing from there that we don’t have free will.

There’s a big problem with the classical argument against free will. It just assumes that determinism is true. The idea behind the argument seems to be that determinism is just a commonsense truism. But it’s actually not a commonsense truism. One of the main lessons of 20th-century physics is that we can’t know by common sense, or by intuition, that determinism is true. Determinism is a controversial hypothesis about the workings of the physical world. We could only know that it’s true by doing some high-level physics. Moreover — and this is another lesson of 20th-century physics — as of right now, we don’t have any good evidence for determinism. In other words, our best physical theories don’t answer the question of whether determinism is true.

During the reign of classical physics (or Newtonian physics), it was widely believed that determinism was true. But in the late 19th and early 20th centuries, physicists started to discover some problems with Newton’s theory, and it was eventually replaced with a new theory — quantum mechanics . (Actually, it was replaced by two new theories, namely, quantum mechanics and relativity theory. But relativity theory isn’t relevant to the topic of free will.) Quantum mechanics has several strange and interesting features, but the one that’s relevant to free will is that this new theory contains laws that are probabilistic rather than deterministic. We can understand what this means very easily. Roughly speaking, deterministic laws of nature look like this:

If you have a physical system in state S, and if you perform experiment E on that system, then you will get outcome O.

But quantum physics contains probabilistic laws that look like this:

If you have a physical system in state S, and if you perform experiment E on that system, then there are two different possible outcomes, namely, O1 and O2; moreover, there’s a 50 percent chance that you’ll get outcome O1 and a 50 percent chance that you’ll get outcome O2.

It’s important to notice what follows from this. Suppose that we take a physical system, put it into state S, and perform experiment E on it. Now suppose that when we perform this experiment, we get outcome O1. Finally, suppose we ask the following question: “Why did we get outcome O1 instead of O2?” The important point to notice is that quantum mechanics doesn’t answer this question . It doesn’t give us any explanation at all for why we got outcome O1 instead of O2. In other words, as far as quantum mechanics is concerned, it could be that nothing caused us to get result O1 ; it could be that this just happened .

Now, Einstein famously thought that this couldn’t be the whole story. You’ve probably heard that he once said that “God doesn’t play dice with the universe.” What he meant when he said this was that the fundamental laws of nature can’t be probabilistic. The fundamental laws, Einstein thought, have to tell us what will happen next, not what will probably happen, or what might happen. So Einstein thought that there had to be a hidden layer of reality , below the quantum level, and that if we could find this hidden layer, we could get rid of the probabilistic laws of quantum mechanics and replace them with deterministic laws, laws that tell us what will happen next, not just what will probably happen next. And, of course, if we could do this — if we could find this hidden layer of reality and these deterministic laws of nature — then we would be able to explain why we got outcome O1 instead of O2.

But a lot of other physicists — most notably, Werner Heisenberg and Niels Bohr — disagreed with Einstein. They thought that the quantum layer of reality was the bottom layer. And they thought that the fundamental laws of nature — or at any rate, some of these laws — were probabilistic laws. But if this is right, then it means that at least some physical events aren’t deterministically caused by prior events. It means that some physical events just happen . For instance, if Heisenberg and Bohr are right, then nothing caused us to get outcome O1 instead of O2; there was no reason why this happened; it just did .

The debate between determinists like Einstein and indeterminists like Heisenberg and Bohr has never been settled.

The debate between Einstein on the one hand and Heisenberg and Bohr on the other is crucially important to our discussion. Einstein is a determinist. If he’s right, then every physical event is predetermined — or in other words, completely caused by prior events. But if Heisenberg and Bohr are right, then determinism is false . On their view, not every event is predetermined by the past and the laws of nature; some things just happen , for no reason at all. In other words, if Heisenberg and Bohr are right, then indeterminism is true.

And here’s the really important point for us. The debate between determinists like Einstein and indeterminists like Heisenberg and Bohr has never been settled. We don’t have any good evidence for either view. Quantum mechanics is still our best theory of the subatomic world, but we just don’t know whether there’s another layer of reality, beneath the quantum layer. And so we don’t know whether all physical events are completely caused by prior events. In other words, we don’t know whether determinism or indeterminism is true. Future physicists might be able to settle this question, but as of right now, we don’t know the answer.

But now notice that if we don’t know whether determinism is true or false, then this completely undermines the classical argument against free will. That argument just assumed that determinism is true. But we now know that there is no good reason to believe this. The question of whether determinism is true is an open question for physicists. So the classical argument against free will is a failure — it doesn’t give us any good reason to conclude that we don’t have free will.

Despite the failure of the classical argument, the enemies of free will are undeterred. They still think there’s a powerful argument to be made against free will. In fact, they think there are two such arguments. Both of these arguments can be thought of as attempts to fix the classical argument, but they do this in completely different ways.

The first new-and-improved argument against free will — which is a scientific argument — starts with the observation that it doesn’t matter whether the full-blown hypothesis of determinism is true because it doesn’t matter whether all events are predetermined by prior events. All that matters is whether our decisions are predetermined by prior events. And the central claim of the first new-and-improved argument against free will is that we have good evidence (from studies performed by psychologists and neuroscientists) for thinking that, in fact, our decisions are predetermined by prior events.

The second new-and-improved argument against free will — which is a philosophical argument, not a scientific argument — relies on the claim that it doesn’t matter whether determinism is true because in determinism is just as incompatible with free will as determinism is. The argument for this is based on the claim that if our decisions aren’t determined, then they aren’t caused by anything, which means that they occur randomly . And the central claim of the second new-and-improved argument against free will is that if our decisions occur randomly, then they just happen to us , and so they’re not the products of our free will.

My own view is that neither of these new-and-improved arguments succeeds in showing that we don’t have free will. But it takes a lot of work to undermine these two arguments. In order to undermine the scientific argument, we need to explain why the relevant psychological and neuroscientific studies don’t in fact show that we don’t have free will. And in order to undermine the philosophical argument, we need to explain how a decision could be the product of someone’s free will — how the outcome of the decision could be under the given person’s control — even if the decision wasn’t caused by anything.

So, yes, this would all take a lot of work. Maybe I should write a book about it.

Mark Balaguer is Professor in the Department of Philosophy at California State University, Los Angeles. He is the author of several books, including “ Free Will ,” from which this article is adapted.

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Free Will and Determinism

Michael norwitz examines the current state of play in this long-running debate, by comparing the views of dennett and van inwagen..

 Since the ancient Greeks, one of the most provocative and oft-discussed questions in philosophy has been whether we have free will in determining the course of our actions, or whether our actions are determined by forces beyond our control. Before the advent of secular thought, those forces might have been identified as the whims of the gods, though the tradition of naturalism in Western thought goes back at least as far as the Milesian School of Greek Philosophy, in the 6th century B.C. In more recent times as the cognitive sciences have developed, it has seemed increasingly likely that our brains work along deterministic lines (or, if quantum effects are non-negligible, at the very least along mechanical lines). So a new debate has arisen: are the concepts of determinism (or naturalism or mechanism) when applied to the brain sciences logically compatible with free will? So some of the attention has shifted from the debate between the “determinists” and the “anti-determinists”, to that between the “compatibilists” and the “anticompatibilists”.

Two declared opponents in this debate are Peter van Inwagen (author of An Essay on Free Will, Oxford University Press, 1983) and Daniel C. Dennett (author of several books including Elbow Room, MIT Press, 1984, which I will be referencing here). Each argues for his conclusion from premises he regards as antecedently plausible, with van Inwagen taking the anti-compatibilist line and Dennett the compatibilist. As van Inwagen is the more precise arguer of the two, I will use his work as the starting point for this discussion. Like Dennett, whose book is subtitled “The Varieties of Free Will Worth Wanting”, he is arguing that we do have free will.Where they differ is on the nature of its relationship to determinism. Van Inwagen presents three premises in his main argument : that free will is in fact incompatible with determinism, that moral responsibility is incompatible with determinism, and that (since we have moral responsibility) determinism is false. Hence, he concludes, we have free will.

The argument for the first premise runs as follows [p.56]: “If determinism is true, then our acts are the consequences of the laws of nature and events in the remote past. But it is not up to us what went on before we were born, and neither is it up to us what the laws of nature are. Therefore the consequences of these things (including our present acts) are not up to us.”

The argument for the second premise [p. 181]: “If (i) no one is morally responsible for having failed to perform any act, and (ii) no one is morally responsible for any event, and (iii) no one is morally responsible for any state of affairs, then there is no such thing as moral responsibility.”

For the third premise van Inwagen does not present a concise summary of his line of argument. He takes it as being self-evident that we have moral responsibility, as we do, after all, continue to hold people morally responsible for their actions.

Dennett would not fault the validity of van Inwagen’s main argument; he does argue with the truth of its premises however. His approach is to reformulate the concepts of “up to us” (in the sense of the argument for the first premise) and “responsibility”. Before I expand on that, however, I want to discuss what I think is the difference in the philosophers’ starting points that causes the divergence of opinion.

Descartes viewed the mind as a pure ego: a permanent, spiritual substance untouched by physical processes. It could be influenced by them through the senses but there was no other manner in which it was influenced by the mechanistic events going on outside in the world. It could influence those events indirectly however through the manipulation of its host body (via the pineal gland).

As modern science advanced in its understanding of the way the brain works, this image of the mind was undermined. It began to look more and more as if the mind is a purely physical entity, as if there is no “person” or “pure ego” outside the realm of physical causation. Some philosophers (like the Churchlands) now go so far as to say that the mind does not exist at all.

In the face of this, the philosopher of metaphysics has two options: retrenchment and retreat.

Dennett’s strategy of retrenchment is to build a second line of defence for the concept of free will, by reformulating the concept so that it is not in conflict with current theories in the brain sciences. There is a sacrifice in that he loses track of our ordinary, common-sense views of what mind and free will are. Dennett claims he is doing ordinary language philosophy but I suspect he has been an academic so long he has forgotten what “ordinary people” are concerned with.

Van Inwagen’s strategy of retreat is to dismiss current trends in science and maintain belief in “agent causation”, that is, the view that people can cause things to happen in the world outside of the normal, mechanistic, physical causation. He complains that many philosophers are overawed by current science and make exaggerated assumptions about the degree to which it will eventually be able to explain how the brain (and the mind) works. However, for various reasons, chief among them being the empirical success of quantum physics, it is highly unlikely that such a complete explanation will ever come about. Heisenburg’s Uncertainty Principle, if it can be applied to the brain, would mean that even if we knew everything about the physical state of a brain at a given instant, we still could not predict its state in the next instant with absolute accuracy. This would imply that the brain was not deterministic in the strictest sense of the term. Nevertheless, as van Inwagen correctly points out, even were determinism false there would still be no guarantee that we have free will. First, if our hopes turned on quantum effects being able to affect brain chemistry, it is still conceivable that they might turn out to be too small to be significant. Second, even if they did have an effect which was non-negligible we could still turn out to be strictly mechanical , and that does not seem to be the type of free will that van Inwagen wants, if he wants a “person” making responsible decisions free from causal restraints (at least physical causal restraints, as he accepts psychological causation).

Ultimately, van Inwagen states that we know we have free will because free will is entailed by moral responsibility, and we know that people are morally responsible for their actions. The rationale for this entailment is van Inwagen’s conception of moral responsibility [p.162]: “a person is morally responsible for what he has done only if he could have done otherwise” (his final version of moral responsibility is more baroque to deal with various styles of counterexamples, but this much simpler version is sufficient for our purposes).

Dennett claims there are cases of responsible action when one could not have done otherwise. That is the purpose of a moral education, to make one incapable of, say, torturing an innocent person in exchange for a thousand pounds. We may have been trained since birth to consider such an offer unacceptable, yet most of us would not claim when we rejected the offer we were not doing so freely. Dennett asks, what is it we want to know of a person when we wonder, could he have done otherwise in a particular situation? Are we asking, given the exact brain states he had and the exact state of the universe as it was at the time of the act, could the person have done otherwise? Dennett rejects this formulation of the question as unanswerable, and even if answerable as unhelpful in determining responsibility. Unanswerable because it is impossible for us to duplicate a model of such complexity; unhelpful because even could we by some stretch of the imagination lay out such a model, we will never naturally find ourselves in such a state – even were the external condition the same the cognitive conditions would not be (at best we might experience some sense of déja vu). So we are left with the problem of how to interpret the question so that it does illuminate [p.142]:

We ask [the question] because something has happened that we wish to interpret … we want to know what conclusions to draw from it about the future. Does it tell us anything about the agent’s character, for instance? Does it suggest a criticism of the agent that might, if presented properly, lead the agent to improve his ways in some regard? Can we learn from this incident that this is or is not an agent who can be trusted to behave similarly on similar occasions in the future? If one held his character constant, but changed the circumstances in minor – or even major – ways, would he almost always do the same lamentable sort of thing? Was what we have just observed a “fluke”, or was it a manifestation of a “robust”trend – a trend that persists, or is constant, over an increasingly wide variety of conditions?

Thus, Dennett argues, we would still hold people morally responsible whether we accepted van Inwagen’s concept of free will or not, because the considerations we have in mind when we ask whether someone “could have done otherwise” are irrelevant to issues of free will and determinism.

I doubt van Inwagen would be satisfied with Dennett’s approach. Despite its ingenuity it comes off like a verbal trick; it “solves the problem“ but at the cost of not really approaching what we worry about when we worry whether we have free will, or responsibility. Of course, Dennett would respond that these worries are bugbears.

That, I think, is a manifestation of the fundamental disagreement. Resolving this disagreement would help resolve the issue between them about free will, but I have my doubts over whether any such resolution is possible. Their disagreement is based on a fundamental judgment each of the two has made about how philosophy should respond to the other disciplines around it.

I agree with van Inwagen’s observation that, given the current state of science, it is premature to claim that determinism (neurologically if not cosmologically) is true; however,it is certainly premature to claim that it is false as well. I see no reason to be convinced by van Inwagen’s arguments unless he is able to give some vague picture of how he thinks agent causation might physically work . I don’t expect it to be exact, but he ought to at least be able to tell a convincing story . The compatibilists can tell a very interesting story, though we might not care so much for their conclusions. Without some kind of workable story, so far as I can tell, van Inwagen is tacitly accepting Cartesian egos as the source of our free will. He is well aware of this shortcoming but is not overly bothered by it. I think that falling back on the Cartesian model and trying to operate outside the realm of empirical science is not a sacrifice worth making. Dennett’s recommendations are worth taking seriously, despite his apparent lack of awareness of the sacrifice he makes in abandoning our ordinary concept of free will – I think this is a sacrifice worth making.

© Michael Norwitz 1991

Oh Thou, who didst with Pitfall and with Gin Beset the Road I was to wander in, Thou will not with Predestination round Enmesh me, and impute my Fall to Sin? Rubáiyát of Omar Khayyám

If it is possible even in theory to predict all that will happen in the future, does this mean that we are not free? Could we look at a child and by considering all the forces and influences which we knew would act upon him over the years, predict accurately that the child would grow up to be a serial killer? And if, in principle, we could, does this mean that the serial-killer-to-be is not responsible for his actions?

The debate about free will and determinism has been going on for centuries. It affects all our ideas about morality and human actions. This issue of Philosophy Now contains two articles on the topic. The first, by Michael Norwitz, sets the scene by examining the ideas of two current participants in the debate. The article which follows is an original contribution to the debate by Professor Antony Flew.

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Free Will vs. Determinism as Philosophical Concepts Essay

  • To find inspiration for your paper and overcome writer’s block
  • As a source of information (ensure proper referencing)
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The enduring debate about whether choice or determinism influences human behavior and actions reveals interesting perspectives. Freedom and determination are opposing forces that represent a situation where people can decide their demeanor or have no control over them, respectively. Contention surrounds the concepts of free choice and causality to understand whether man creates his destiny or follows a definite path set for him. The perplexing issues include how to account for or change actions and fate depending on whether they come from within or from external stimuli (Willoughby et al. 137). An objective and meticulous examination of the freedom and responsibility spectrum that highlights the difference between choice and causation explains whether human actions are free or predetermined.

Self-discretion refers to the inherent capacity for someone to choose his actions or behavior without any form of restriction. The keyword that drives choice is self-determination, such as deciding to commit a crime or avoid it, fully aware of the repercussions. Interestingly, this does not imply that behavior occurs randomly but that individuals are free from the causal influences derived from experiences (Willoughby et al. 143). The humanistic approach delineates self-discretion as the agency to exercise personal preferences regarding the consequences of the exhibited behavior. Famed humanists psychologists, such as Maslow argue that freedom is possible and necessary for man to become fully functional. Undeniably, self-actualization is a unique human need and motivation that illustrates man’s uniqueness from other species.

Determinism and the determinist perspective posit that every demeanor or action is predictable by virtue of having a cause. Essentially, the determinist school of thought rejects freedom as an illusion and cites internal and external forces beyond human control as the source of behavior. Consequently, determinists observe human action and behavior from two angles, namely external and internal determinism (Willoughby et al. 149). External determinists observe behavior as a human trait resulting from external influencers, such as the media, peers, school, and parents. Social learning theory and behaviorism acknowledge the value of external influence (Willoughby et al. 151) as illustrated by Bandura who linked children’s aggressive behavior with what they observed and imitated from their parents.

Internal determinism explains how forces from within a person shape behavior and actions. Sociobiology acknowledges the value of genetic inheritance that represents forces derived from inside a family to govern the behavior of its members. The justification of the innate forces is evident when a child shows the natural need to attach to one figure, such as a parent or a caregiver (Willoughby et al. 155). Undeniably, personal characteristics, such as neuroticism and extraversion cause behavior that stem from hormonal and neurological processes of the body.

Determinism is evident through different levels to show its causal effects on human behavior. Hard determinism that is championed by behaviorists emphasizes the fact that every action and behavior has a cause and choice is a fantasy. According to Skinner, people who commit crimes have no choice but act in response to their personal history and environmental circumstances that make violating the law inevitable and natural (Willoughby et al. 161). Conversely, soft determinism acknowledges that people have choices, albeit constrained by external and internal forces. This element of free will is evident by the argument that being poor does not motivate people to steal but increases their likelihood to pursue the option due to desperation.

Conclusively, free choice and causation are important forces that can explain human actions and behavior as shown in the freedom and responsibility spectrum. Each of the perspectives explaining people’s demeanor offers a valid argument that reveals their credibility. Researchers and policymakers can gain much insight to implement strategies, policies, and laws that embrace the value of choice and causality in explaining human actions and behavior.

Works Cited

Willoughby, Emily A., et al. “Free Will, Determinism, and Intuitive Judgments about the Heritability of Behavior.” Behavior Genetics, vol. 49, no. 2, 2019, pp. 136-153.

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The Debate on Free Will and Determinism

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Introduction, determinism, compatibilism, works cited.

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essay on free will and determinism

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    Louis 1 Theresa Louis Professor Allen Mcphee PHI 2010 May 29, 2024 Essay Discussion: Free Will vs Determinism The philosophical debate of free will and determinism has always been a controversial discussion for centuries and addresses the point whether or not people should have a choice or leave it up to the master of fate. Free will is when people have complete freedom or independence to make ...

  7. PDF Free will vs. determinism

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  13. Free Will and Determinism Analysis

    Free will is people's ability to choose according to their desires. Having free will means making unforced decisions. Jonathan Edwards, in his fundamental work The Freedom of the Will (1754), argues that the will always choose according to its greatest desire at the moment of choice.Few simple examples illustrate this fact: if a person can choose whether to stay at home and have a tedious ...

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  16. Free Will vs. Determinism as Philosophical Concepts Essay

    The enduring debate about whether choice or determinism influences human behavior and actions reveals interesting perspectives. Freedom and determination are opposing forces that represent a situation where people can decide their demeanor or have no control over them, respectively.

  17. PDF Free will, determinism, and the possibility of doing otherwise

    2 For an excellent overview of the debate on free will, see the Oxford Handbook of Free Will, edited by R. Kane (Oxford: O.U.P., 2002), especially Kane's introduction, on which I here draw. A classic exposition is P. van Inwagen's "The Incompatibility of Free Will and Determinism", Philosophical Studies 27, pp. 185-199 (1975).

  18. Free Will And Determinism Philosophy Essay

    Free Will, Predestination and Determinism, p144) Hence, determinism is a philosophical position according to which all human actions are predetermined. According to it, a person in a given situation may think that he could do this or that, but in every case of the stars, the laws of physics, his character, the conditioning he has received or ...

  19. Essay on Free Will Versus Determinism

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  20. AQA A level Psychology Free Will and Determinism

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  21. PDF Free Will and Determinism

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  22. The Debate on Free Will and Determinism

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