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How to Write a Research Paper Introduction (with Examples)

The research paper introduction section, along with the Title and Abstract, can be considered the face of any research paper. The following article is intended to guide you in organizing and writing the research paper introduction for a quality academic article or dissertation.

The research paper introduction aims to present the topic to the reader. A study will only be accepted for publishing if you can ascertain that the available literature cannot answer your research question. So it is important to ensure that you have read important studies on that particular topic, especially those within the last five to ten years, and that they are properly referenced in this section. 1 What should be included in the research paper introduction is decided by what you want to tell readers about the reason behind the research and how you plan to fill the knowledge gap. The best research paper introduction provides a systemic review of existing work and demonstrates additional work that needs to be done. It needs to be brief, captivating, and well-referenced; a well-drafted research paper introduction will help the researcher win half the battle.

The introduction for a research paper is where you set up your topic and approach for the reader. It has several key goals:

• Present your research topic
• Capture reader interest
• Summarize existing research
• Position your own approach
• Define your specific research problem and problem statement
• Highlight the novelty and contributions of the study
• Give an overview of the paper’s structure

The research paper introduction can vary in size and structure depending on whether your paper presents the results of original empirical research or is a review paper. Some research paper introduction examples are only half a page while others are a few pages long. In many cases, the introduction will be shorter than all of the other sections of your paper; its length depends on the size of your paper as a whole.

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Table of Contents

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The introduction in a research paper is placed at the beginning to guide the reader from a broad subject area to the specific topic that your research addresses. They present the following information to the reader

• Scope: The topic covered in the research paper
• Context: Background of your topic
• Importance: Why your research matters in that particular area of research and the industry problem that can be targeted

The research paper introduction conveys a lot of information and can be considered an essential roadmap for the rest of your paper. A good introduction for a research paper is important for the following reasons:

• It stimulates your reader’s interest: A good introduction section can make your readers want to read your paper by capturing their interest. It informs the reader what they are going to learn and helps determine if the topic is of interest to them.
• It helps the reader understand the research background: Without a clear introduction, your readers may feel confused and even struggle when reading your paper. A good research paper introduction will prepare them for the in-depth research to come. It provides you the opportunity to engage with the readers and demonstrate your knowledge and authority on the specific topic.
• It explains why your research paper is worth reading: Your introduction can convey a lot of information to your readers. It introduces the topic, why the topic is important, and how you plan to proceed with your research.
• It helps guide the reader through the rest of the paper: The research paper introduction gives the reader a sense of the nature of the information that will support your arguments and the general organization of the paragraphs that will follow. It offers an overview of what to expect when reading the main body of your paper.

What are the parts of introduction in the research?

A good research paper introduction section should comprise three main elements: 2

• What is known: This sets the stage for your research. It informs the readers of what is known on the subject.
• What is lacking: This is aimed at justifying the reason for carrying out your research. This could involve investigating a new concept or method or building upon previous research.
• What you aim to do: This part briefly states the objectives of your research and its major contributions. Your detailed hypothesis will also form a part of this section.

How to write a research paper introduction?

The first step in writing the research paper introduction is to inform the reader what your topic is and why it’s interesting or important. This is generally accomplished with a strong opening statement. The second step involves establishing the kinds of research that have been done and ending with limitations or gaps in the research that you intend to address. Finally, the research paper introduction clarifies how your own research fits in and what problem it addresses. If your research involved testing hypotheses, these should be stated along with your research question. The hypothesis should be presented in the past tense since it will have been tested by the time you are writing the research paper introduction.

The following key points, with examples, can guide you when writing the research paper introduction section:

• Highlight the importance of the research field or topic
• Describe the background of the topic
• Present an overview of current research on the topic

Example: The inclusion of experiential and competency-based learning has benefitted electronics engineering education. Industry partnerships provide an excellent alternative for students wanting to engage in solving real-world challenges. Industry-academia participation has grown in recent years due to the need for skilled engineers with practical training and specialized expertise. However, from the educational perspective, many activities are needed to incorporate sustainable development goals into the university curricula and consolidate learning innovation in universities.

• Reveal a gap in existing research or oppose an existing assumption
• Formulate the research question

Example: There have been plausible efforts to integrate educational activities in higher education electronics engineering programs. However, very few studies have considered using educational research methods for performance evaluation of competency-based higher engineering education, with a focus on technical and or transversal skills. To remedy the current need for evaluating competencies in STEM fields and providing sustainable development goals in engineering education, in this study, a comparison was drawn between study groups without and with industry partners.

• State the purpose of your study
• Highlight the key characteristics of your study
• Describe important results
• Highlight the novelty of the study.
• Offer a brief overview of the structure of the paper.

Example: The study evaluates the main competency needed in the applied electronics course, which is a fundamental core subject for many electronics engineering undergraduate programs. We compared two groups, without and with an industrial partner, that offered real-world projects to solve during the semester. This comparison can help determine significant differences in both groups in terms of developing subject competency and achieving sustainable development goals.

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You can use the same process to develop each section of your article, and finally your research paper in half the time and without any of the stress.

The purpose of the research paper introduction is to introduce the reader to the problem definition, justify the need for the study, and describe the main theme of the study. The aim is to gain the reader’s attention by providing them with necessary background information and establishing the main purpose and direction of the research.

The length of the research paper introduction can vary across journals and disciplines. While there are no strict word limits for writing the research paper introduction, an ideal length would be one page, with a maximum of 400 words over 1-4 paragraphs. Generally, it is one of the shorter sections of the paper as the reader is assumed to have at least a reasonable knowledge about the topic. 2 For example, for a study evaluating the role of building design in ensuring fire safety, there is no need to discuss definitions and nature of fire in the introduction; you could start by commenting upon the existing practices for fire safety and how your study will add to the existing knowledge and practice.

When deciding what to include in the research paper introduction, the rest of the paper should also be considered. The aim is to introduce the reader smoothly to the topic and facilitate an easy read without much dependency on external sources. 3 Below is a list of elements you can include to prepare a research paper introduction outline and follow it when you are writing the research paper introduction. Topic introduction: This can include key definitions and a brief history of the topic. Research context and background: Offer the readers some general information and then narrow it down to specific aspects. Details of the research you conducted: A brief literature review can be included to support your arguments or line of thought. Rationale for the study: This establishes the relevance of your study and establishes its importance. Importance of your research: The main contributions are highlighted to help establish the novelty of your study Research hypothesis: Introduce your research question and propose an expected outcome. Organization of the paper: Include a short paragraph of 3-4 sentences that highlights your plan for the entire paper

Cite only works that are most relevant to your topic; as a general rule, you can include one to three. Note that readers want to see evidence of original thinking. So it is better to avoid using too many references as it does not leave much room for your personal standpoint to shine through. Citations in your research paper introduction support the key points, and the number of citations depend on the subject matter and the point discussed. If the research paper introduction is too long or overflowing with citations, it is better to cite a few review articles rather than the individual articles summarized in the review. A good point to remember when citing research papers in the introduction section is to include at least one-third of the references in the introduction.

The literature review plays a significant role in the research paper introduction section. A good literature review accomplishes the following: Introduces the topic – Establishes the study’s significance – Provides an overview of the relevant literature – Provides context for the study using literature – Identifies knowledge gaps However, remember to avoid making the following mistakes when writing a research paper introduction: Do not use studies from the literature review to aggressively support your research Avoid direct quoting Do not allow literature review to be the focus of this section. Instead, the literature review should only aid in setting a foundation for the manuscript.

Remember the following key points for writing a good research paper introduction: 4

• Avoid stuffing too much general information: Avoid including what an average reader would know and include only that information related to the problem being addressed in the research paper introduction. For example, when describing a comparative study of non-traditional methods for mechanical design optimization, information related to the traditional methods and differences between traditional and non-traditional methods would not be relevant. In this case, the introduction for the research paper should begin with the state-of-the-art non-traditional methods and methods to evaluate the efficiency of newly developed algorithms.
• Avoid packing too many references: Cite only the required works in your research paper introduction. The other works can be included in the discussion section to strengthen your findings.
• Avoid extensive criticism of previous studies: Avoid being overly critical of earlier studies while setting the rationale for your study. A better place for this would be the Discussion section, where you can highlight the advantages of your method.
• Avoid describing conclusions of the study: When writing a research paper introduction remember not to include the findings of your study. The aim is to let the readers know what question is being answered. The actual answer should only be given in the Results and Discussion section.

To summarize, the research paper introduction section should be brief yet informative. It should convince the reader the need to conduct the study and motivate him to read further. If you’re feeling stuck or unsure, choose trusted AI academic writing assistants like Paperpal to effortlessly craft your research paper introduction and other sections of your research article.

1. Jawaid, S. A., & Jawaid, M. (2019). How to write introduction and discussion. Saudi Journal of Anaesthesia, 13(Suppl 1), S18.

2. Dewan, P., & Gupta, P. (2016). Writing the title, abstract and introduction: Looks matter!. Indian pediatrics, 53, 235-241.

3. Cetin, S., & Hackam, D. J. (2005). An approach to the writing of a scientific Manuscript1. Journal of Surgical Research, 128(2), 165-167.

4. Bavdekar, S. B. (2015). Writing introduction: Laying the foundations of a research paper. Journal of the Association of Physicians of India, 63(7), 44-6.

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Home » Research Paper Introduction – Writing Guide and Examples

Research Paper Introduction – Writing Guide and Examples

Table of Contents

Research Paper Introduction

Research paper introduction is the first section of a research paper that provides an overview of the study, its purpose, and the research question (s) or hypothesis (es) being investigated. It typically includes background information about the topic, a review of previous research in the field, and a statement of the research objectives. The introduction is intended to provide the reader with a clear understanding of the research problem, why it is important, and how the study will contribute to existing knowledge in the field. It also sets the tone for the rest of the paper and helps to establish the author’s credibility and expertise on the subject.

How to Write Research Paper Introduction

Writing an introduction for a research paper can be challenging because it sets the tone for the entire paper. Here are some steps to follow to help you write an effective research paper introduction:

• Start with a hook : Begin your introduction with an attention-grabbing statement, a question, or a surprising fact that will make the reader interested in reading further.
• Provide background information: After the hook, provide background information on the topic. This information should give the reader a general idea of what the topic is about and why it is important.
• State the research problem: Clearly state the research problem or question that the paper addresses. This should be done in a concise and straightforward manner.
• State the research objectives: After stating the research problem, clearly state the research objectives. This will give the reader an idea of what the paper aims to achieve.
• Provide a brief overview of the paper: At the end of the introduction, provide a brief overview of the paper. This should include a summary of the main points that will be discussed in the paper.
• Revise and refine: Finally, revise and refine your introduction to ensure that it is clear, concise, and engaging.

Structure of Research Paper Introduction

The following is a typical structure for a research paper introduction:

• Background Information: This section provides an overview of the topic of the research paper, including relevant background information and any previous research that has been done on the topic. It helps to give the reader a sense of the context for the study.
• Problem Statement: This section identifies the specific problem or issue that the research paper is addressing. It should be clear and concise, and it should articulate the gap in knowledge that the study aims to fill.
• Research Question/Hypothesis : This section states the research question or hypothesis that the study aims to answer. It should be specific and focused, and it should clearly connect to the problem statement.
• Significance of the Study: This section explains why the research is important and what the potential implications of the study are. It should highlight the contribution that the research makes to the field.
• Methodology: This section describes the research methods that were used to conduct the study. It should be detailed enough to allow the reader to understand how the study was conducted and to evaluate the validity of the results.
• Organization of the Paper : This section provides a brief overview of the structure of the research paper. It should give the reader a sense of what to expect in each section of the paper.

Research Paper Introduction Examples

Research Paper Introduction Examples could be:

Example 1: In recent years, the use of artificial intelligence (AI) has become increasingly prevalent in various industries, including healthcare. AI algorithms are being developed to assist with medical diagnoses, treatment recommendations, and patient monitoring. However, as the use of AI in healthcare grows, ethical concerns regarding privacy, bias, and accountability have emerged. This paper aims to explore the ethical implications of AI in healthcare and propose recommendations for addressing these concerns.

Example 2: Climate change is one of the most pressing issues facing our planet today. The increasing concentration of greenhouse gases in the atmosphere has resulted in rising temperatures, changing weather patterns, and other environmental impacts. In this paper, we will review the scientific evidence on climate change, discuss the potential consequences of inaction, and propose solutions for mitigating its effects.

Example 3: The rise of social media has transformed the way we communicate and interact with each other. While social media platforms offer many benefits, including increased connectivity and access to information, they also present numerous challenges. In this paper, we will examine the impact of social media on mental health, privacy, and democracy, and propose solutions for addressing these issues.

Example 4: The use of renewable energy sources has become increasingly important in the face of climate change and environmental degradation. While renewable energy technologies offer many benefits, including reduced greenhouse gas emissions and energy independence, they also present numerous challenges. In this paper, we will assess the current state of renewable energy technology, discuss the economic and political barriers to its adoption, and propose solutions for promoting the widespread use of renewable energy.

Purpose of Research Paper Introduction

The introduction section of a research paper serves several important purposes, including:

• Providing context: The introduction should give readers a general understanding of the topic, including its background, significance, and relevance to the field.
• Presenting the research question or problem: The introduction should clearly state the research question or problem that the paper aims to address. This helps readers understand the purpose of the study and what the author hopes to accomplish.
• Reviewing the literature: The introduction should summarize the current state of knowledge on the topic, highlighting the gaps and limitations in existing research. This shows readers why the study is important and necessary.
• Outlining the scope and objectives of the study: The introduction should describe the scope and objectives of the study, including what aspects of the topic will be covered, what data will be collected, and what methods will be used.
• Previewing the main findings and conclusions : The introduction should provide a brief overview of the main findings and conclusions that the study will present. This helps readers anticipate what they can expect to learn from the paper.

When to Write Research Paper Introduction

The introduction of a research paper is typically written after the research has been conducted and the data has been analyzed. This is because the introduction should provide an overview of the research problem, the purpose of the study, and the research questions or hypotheses that will be investigated.

Once you have a clear understanding of the research problem and the questions that you want to explore, you can begin to write the introduction. It’s important to keep in mind that the introduction should be written in a way that engages the reader and provides a clear rationale for the study. It should also provide context for the research by reviewing relevant literature and explaining how the study fits into the larger field of research.

Advantages of Research Paper Introduction

The introduction of a research paper has several advantages, including:

• Establishing the purpose of the research: The introduction provides an overview of the research problem, question, or hypothesis, and the objectives of the study. This helps to clarify the purpose of the research and provide a roadmap for the reader to follow.
• Providing background information: The introduction also provides background information on the topic, including a review of relevant literature and research. This helps the reader understand the context of the study and how it fits into the broader field of research.
• Demonstrating the significance of the research: The introduction also explains why the research is important and relevant. This helps the reader understand the value of the study and why it is worth reading.
• Setting expectations: The introduction sets the tone for the rest of the paper and prepares the reader for what is to come. This helps the reader understand what to expect and how to approach the paper.
• Grabbing the reader’s attention: A well-written introduction can grab the reader’s attention and make them interested in reading further. This is important because it can help to keep the reader engaged and motivated to read the rest of the paper.
• Creating a strong first impression: The introduction is the first part of the research paper that the reader will see, and it can create a strong first impression. A well-written introduction can make the reader more likely to take the research seriously and view it as credible.
• Establishing the author’s credibility: The introduction can also establish the author’s credibility as a researcher. By providing a clear and thorough overview of the research problem and relevant literature, the author can demonstrate their expertise and knowledge in the field.
• Providing a structure for the paper: The introduction can also provide a structure for the rest of the paper. By outlining the main sections and sub-sections of the paper, the introduction can help the reader navigate the paper and find the information they are looking for.

About the author

Muhammad Hassan

Researcher, Academic Writer, Web developer

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• Research Guides

Organizing Your Social Sciences Research Paper

• 4. The Introduction
• Purpose of Guide
• Design Flaws to Avoid
• Independent and Dependent Variables
• Glossary of Research Terms
• Reading Research Effectively
• Narrowing a Topic Idea
• Broadening a Topic Idea
• Extending the Timeliness of a Topic Idea
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• Choosing a Title
• Making an Outline
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• The C.A.R.S. Model
• Background Information
• The Research Problem/Question
• Theoretical Framework
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The introduction leads the reader from a general subject area to a particular topic of inquiry. It establishes the scope, context, and significance of the research being conducted by summarizing current understanding and background information about the topic, stating the purpose of the work in the form of the research problem supported by a hypothesis or a set of questions, explaining briefly the methodological approach used to examine the research problem, highlighting the potential outcomes your study can reveal, and outlining the remaining structure and organization of the paper.

Key Elements of the Research Proposal. Prepared under the direction of the Superintendent and by the 2010 Curriculum Design and Writing Team. Baltimore County Public Schools.

Importance of a Good Introduction

Think of the introduction as a mental road map that must answer for the reader these four questions:

• What was I studying?
• Why was this topic important to investigate?
• What did we know about this topic before I did this study?
• How will this study advance new knowledge or new ways of understanding?

According to Reyes, there are three overarching goals of a good introduction: 1) ensure that you summarize prior studies about the topic in a manner that lays a foundation for understanding the research problem; 2) explain how your study specifically addresses gaps in the literature, insufficient consideration of the topic, or other deficiency in the literature; and, 3) note the broader theoretical, empirical, and/or policy contributions and implications of your research.

A well-written introduction is important because, quite simply, you never get a second chance to make a good first impression. The opening paragraphs of your paper will provide your readers with their initial impressions about the logic of your argument, your writing style, the overall quality of your research, and, ultimately, the validity of your findings and conclusions. A vague, disorganized, or error-filled introduction will create a negative impression, whereas, a concise, engaging, and well-written introduction will lead your readers to think highly of your analytical skills, your writing style, and your research approach. All introductions should conclude with a brief paragraph that describes the organization of the rest of the paper.

Hirano, Eliana. “Research Article Introductions in English for Specific Purposes: A Comparison between Brazilian, Portuguese, and English.” English for Specific Purposes 28 (October 2009): 240-250; Samraj, B. “Introductions in Research Articles: Variations Across Disciplines.” English for Specific Purposes 21 (2002): 1–17; Introductions. The Writing Center. University of North Carolina; “Writing Introductions.” In Good Essay Writing: A Social Sciences Guide. Peter Redman. 4th edition. (London: Sage, 2011), pp. 63-70; Reyes, Victoria. Demystifying the Journal Article. Inside Higher Education.

Structure and Writing Style

I.  Structure and Approach

The introduction is the broad beginning of the paper that answers three important questions for the reader:

• What is this?
• Why should I read it?
• What do you want me to think about / consider doing / react to?

Think of the structure of the introduction as an inverted triangle of information that lays a foundation for understanding the research problem. Organize the information so as to present the more general aspects of the topic early in the introduction, then narrow your analysis to more specific topical information that provides context, finally arriving at your research problem and the rationale for studying it [often written as a series of key questions to be addressed or framed as a hypothesis or set of assumptions to be tested] and, whenever possible, a description of the potential outcomes your study can reveal.

These are general phases associated with writing an introduction: 1.  Establish an area to research by:

• Highlighting the importance of the topic, and/or
• Making general statements about the topic, and/or
• Presenting an overview on current research on the subject.

2.  Identify a research niche by:

• Opposing an existing assumption, and/or
• Revealing a gap in existing research, and/or
• Formulating a research question or problem, and/or
• Continuing a disciplinary tradition.

3.  Place your research within the research niche by:

• Stating the intent of your study,
• Outlining the key characteristics of your study,
• Describing important results, and
• Giving a brief overview of the structure of the paper.

NOTE:   It is often useful to review the introduction late in the writing process. This is appropriate because outcomes are unknown until you've completed the study. After you complete writing the body of the paper, go back and review introductory descriptions of the structure of the paper, the method of data gathering, the reporting and analysis of results, and the conclusion. Reviewing and, if necessary, rewriting the introduction ensures that it correctly matches the overall structure of your final paper.

II.  Delimitations of the Study

Delimitations refer to those characteristics that limit the scope and define the conceptual boundaries of your research . This is determined by the conscious exclusionary and inclusionary decisions you make about how to investigate the research problem. In other words, not only should you tell the reader what it is you are studying and why, but you must also acknowledge why you rejected alternative approaches that could have been used to examine the topic.

Obviously, the first limiting step was the choice of research problem itself. However, implicit are other, related problems that could have been chosen but were rejected. These should be noted in the conclusion of your introduction. For example, a delimitating statement could read, "Although many factors can be understood to impact the likelihood young people will vote, this study will focus on socioeconomic factors related to the need to work full-time while in school." The point is not to document every possible delimiting factor, but to highlight why previously researched issues related to the topic were not addressed.

Examples of delimitating choices would be:

• The key aims and objectives of your study,
• The research questions that you address,
• The variables of interest [i.e., the various factors and features of the phenomenon being studied],
• The method(s) of investigation,
• The time period your study covers, and
• Any relevant alternative theoretical frameworks that could have been adopted.

Review each of these decisions. Not only do you clearly establish what you intend to accomplish in your research, but you should also include a declaration of what the study does not intend to cover. In the latter case, your exclusionary decisions should be based upon criteria understood as, "not interesting"; "not directly relevant"; “too problematic because..."; "not feasible," and the like. Make this reasoning explicit!

NOTE:   Delimitations refer to the initial choices made about the broader, overall design of your study and should not be confused with documenting the limitations of your study discovered after the research has been completed.

ANOTHER NOTE : Do not view delimitating statements as admitting to an inherent failing or shortcoming in your research. They are an accepted element of academic writing intended to keep the reader focused on the research problem by explicitly defining the conceptual boundaries and scope of your study. It addresses any critical questions in the reader's mind of, "Why the hell didn't the author examine this?"

III.  The Narrative Flow

Issues to keep in mind that will help the narrative flow in your introduction :

• Your introduction should clearly identify the subject area of interest . A simple strategy to follow is to use key words from your title in the first few sentences of the introduction. This will help focus the introduction on the topic at the appropriate level and ensures that you get to the subject matter quickly without losing focus, or discussing information that is too general.
• Establish context by providing a brief and balanced review of the pertinent published literature that is available on the subject. The key is to summarize for the reader what is known about the specific research problem before you did your analysis. This part of your introduction should not represent a comprehensive literature review--that comes next. It consists of a general review of the important, foundational research literature [with citations] that establishes a foundation for understanding key elements of the research problem. See the drop-down menu under this tab for " Background Information " regarding types of contexts.
• Clearly state the hypothesis that you investigated . When you are first learning to write in this format it is okay, and actually preferable, to use a past statement like, "The purpose of this study was to...." or "We investigated three possible mechanisms to explain the...."
• Why did you choose this kind of research study or design? Provide a clear statement of the rationale for your approach to the problem studied. This will usually follow your statement of purpose in the last paragraph of the introduction.

IV.  Engaging the Reader

A research problem in the social sciences can come across as dry and uninteresting to anyone unfamiliar with the topic . Therefore, one of the goals of your introduction is to make readers want to read your paper. Here are several strategies you can use to grab the reader's attention:

• Open with a compelling story . Almost all research problems in the social sciences, no matter how obscure or esoteric , are really about the lives of people. Telling a story that humanizes an issue can help illuminate the significance of the problem and help the reader empathize with those affected by the condition being studied.
• Include a strong quotation or a vivid, perhaps unexpected, anecdote . During your review of the literature, make note of any quotes or anecdotes that grab your attention because they can used in your introduction to highlight the research problem in a captivating way.
• Pose a provocative or thought-provoking question . Your research problem should be framed by a set of questions to be addressed or hypotheses to be tested. However, a provocative question can be presented in the beginning of your introduction that challenges an existing assumption or compels the reader to consider an alternative viewpoint that helps establish the significance of your study. 
• Describe a puzzling scenario or incongruity . This involves highlighting an interesting quandary concerning the research problem or describing contradictory findings from prior studies about a topic. Posing what is essentially an unresolved intellectual riddle about the problem can engage the reader's interest in the study.
• Cite a stirring example or case study that illustrates why the research problem is important . Draw upon the findings of others to demonstrate the significance of the problem and to describe how your study builds upon or offers alternatives ways of investigating this prior research.

NOTE:   It is important that you choose only one of the suggested strategies for engaging your readers. This avoids giving an impression that your paper is more flash than substance and does not distract from the substance of your study.

Freedman, Leora  and Jerry Plotnick. Introductions and Conclusions. University College Writing Centre. University of Toronto; Introduction. The Structure, Format, Content, and Style of a Journal-Style Scientific Paper. Department of Biology. Bates College; Introductions. The Writing Center. University of North Carolina; Introductions. The Writer’s Handbook. Writing Center. University of Wisconsin, Madison; Introductions, Body Paragraphs, and Conclusions for an Argument Paper. The Writing Lab and The OWL. Purdue University; “Writing Introductions.” In Good Essay Writing: A Social Sciences Guide . Peter Redman. 4th edition. (London: Sage, 2011), pp. 63-70; Resources for Writers: Introduction Strategies. Program in Writing and Humanistic Studies. Massachusetts Institute of Technology; Sharpling, Gerald. Writing an Introduction. Centre for Applied Linguistics, University of Warwick; Samraj, B. “Introductions in Research Articles: Variations Across Disciplines.” English for Specific Purposes 21 (2002): 1–17; Swales, John and Christine B. Feak. Academic Writing for Graduate Students: Essential Skills and Tasks . 2nd edition. Ann Arbor, MI: University of Michigan Press, 2004 ; Writing Your Introduction. Department of English Writing Guide. George Mason University.

Writing Tip

Avoid the "Dictionary" Introduction

Giving the dictionary definition of words related to the research problem may appear appropriate because it is important to define specific terminology that readers may be unfamiliar with. However, anyone can look a word up in the dictionary and a general dictionary is not a particularly authoritative source because it doesn't take into account the context of your topic and doesn't offer particularly detailed information. Also, placed in the context of a particular discipline, a term or concept may have a different meaning than what is found in a general dictionary. If you feel that you must seek out an authoritative definition, use a subject specific dictionary or encyclopedia [e.g., if you are a sociology student, search for dictionaries of sociology]. A good database for obtaining definitive definitions of concepts or terms is Credo Reference .

Saba, Robert. The College Research Paper. Florida International University; Introductions. The Writing Center. University of North Carolina.

Another Writing Tip

When Do I Begin?

A common question asked at the start of any paper is, "Where should I begin?" An equally important question to ask yourself is, "When do I begin?" Research problems in the social sciences rarely rest in isolation from history. Therefore, it is important to lay a foundation for understanding the historical context underpinning the research problem. However, this information should be brief and succinct and begin at a point in time that illustrates the study's overall importance. For example, a study that investigates coffee cultivation and export in West Africa as a key stimulus for local economic growth needs to describe the beginning of exporting coffee in the region and establishing why economic growth is important. You do not need to give a long historical explanation about coffee exports in Africa. If a research problem requires a substantial exploration of the historical context, do this in the literature review section. In your introduction, make note of this as part of the "roadmap" [see below] that you use to describe the organization of your paper.

Introductions. The Writing Center. University of North Carolina; “Writing Introductions.” In Good Essay Writing: A Social Sciences Guide . Peter Redman. 4th edition. (London: Sage, 2011), pp. 63-70.

Yet Another Writing Tip

Always End with a Roadmap

The final paragraph or sentences of your introduction should forecast your main arguments and conclusions and provide a brief description of the rest of the paper [the "roadmap"] that let's the reader know where you are going and what to expect. A roadmap is important because it helps the reader place the research problem within the context of their own perspectives about the topic. In addition, concluding your introduction with an explicit roadmap tells the reader that you have a clear understanding of the structural purpose of your paper. In this way, the roadmap acts as a type of promise to yourself and to your readers that you will follow a consistent and coherent approach to addressing the topic of inquiry. Refer to it often to help keep your writing focused and organized.

Cassuto, Leonard. “On the Dissertation: How to Write the Introduction.” The Chronicle of Higher Education , May 28, 2018; Radich, Michael. A Student's Guide to Writing in East Asian Studies . (Cambridge, MA: Harvard University Writing n. d.), pp. 35-37.

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How to write an effective introduction for your research paper

Last updated

20 January 2024

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However, the introduction is a vital element of your research paper. It helps the reader decide whether your paper is worth their time. As such, it's worth taking your time to get it right.

In this article, we'll tell you everything you need to know about writing an effective introduction for your research paper.

• The importance of an introduction in research papers

The primary purpose of an introduction is to provide an overview of your paper. This lets readers gauge whether they want to continue reading or not. The introduction should provide a meaningful roadmap of your research to help them make this decision. It should let readers know whether the information they're interested in is likely to be found in the pages that follow.

Aside from providing readers with information about the content of your paper, the introduction also sets the tone. It shows readers the style of language they can expect, which can further help them to decide how far to read.

When you take into account both of these roles that an introduction plays, it becomes clear that crafting an engaging introduction is the best way to get your paper read more widely. First impressions count, and the introduction provides that impression to readers.

• The optimum length for a research paper introduction

While there's no magic formula to determine exactly how long a research paper introduction should be, there are a few guidelines. Some variables that impact the ideal introduction length include:

Field of study

Complexity of the topic

Specific requirements of the course or publication

A commonly recommended length of a research paper introduction is around 10% of the total paper’s length. So, a ten-page paper has a one-page introduction. If the topic is complex, it may require more background to craft a compelling intro. Humanities papers tend to have longer introductions than those of the hard sciences.

The best way to craft an introduction of the right length is to focus on clarity and conciseness. Tell the reader only what is necessary to set up your research. An introduction edited down with this goal in mind should end up at an acceptable length.

• Evaluating successful research paper introductions

A good way to gauge how to create a great introduction is by looking at examples from across your field. The most influential and well-regarded papers should provide some insights into what makes a good introduction.

Dissecting examples: what works and why

We can make some general assumptions by looking at common elements of a good introduction, regardless of the field of research.

A common structure is to start with a broad context, and then narrow that down to specific research questions or hypotheses. This creates a funnel that establishes the scope and relevance.

The most effective introductions are careful about the assumptions they make regarding reader knowledge. By clearly defining key terms and concepts instead of assuming the reader is familiar with them, these introductions set a more solid foundation for understanding.

To pull in the reader and make that all-important good first impression, excellent research paper introductions will often incorporate a compelling narrative or some striking fact that grabs the reader's attention.

Finally, good introductions provide clear citations from past research to back up the claims they're making. In the case of argumentative papers or essays (those that take a stance on a topic or issue), a strong thesis statement compels the reader to continue reading.

Common pitfalls to avoid in research paper introductions

You can also learn what not to do by looking at other research papers. Many authors have made mistakes you can learn from.

We've talked about the need to be clear and concise. Many introductions fail at this; they're verbose, vague, or otherwise fail to convey the research problem or hypothesis efficiently. This often comes in the form of an overemphasis on background information, which obscures the main research focus.

Ensure your introduction provides the proper emphasis and excitement around your research and its significance. Otherwise, fewer people will want to read more about it.

• Crafting a compelling introduction for a research paper

Let’s take a look at the steps required to craft an introduction that pulls readers in and compels them to learn more about your research.

Step 1: Capturing interest and setting the scene

To capture the reader's interest immediately, begin your introduction with a compelling question, a surprising fact, a provocative quote, or some other mechanism that will hook readers and pull them further into the paper.

As they continue reading, the introduction should contextualize your research within the current field, showing readers its relevance and importance. Clarify any essential terms that will help them better understand what you're saying. This keeps the fundamentals of your research accessible to all readers from all backgrounds.

Step 2: Building a solid foundation with background information

Including background information in your introduction serves two major purposes:

It helps to clarify the topic for the reader

It establishes the depth of your research

The approach you take when conveying this information depends on the type of paper.

For argumentative papers, you'll want to develop engaging background narratives. These should provide context for the argument you'll be presenting.

For empirical papers, highlighting past research is the key. Often, there will be some questions that weren't answered in those past papers. If your paper is focused on those areas, those papers make ideal candidates for you to discuss and critique in your introduction.

Step 3: Pinpointing the research challenge

To capture the attention of the reader, you need to explain what research challenges you'll be discussing.

For argumentative papers, this involves articulating why the argument you'll be making is important. What is its relevance to current discussions or problems? What is the potential impact of people accepting or rejecting your argument?

For empirical papers, explain how your research is addressing a gap in existing knowledge. What new insights or contributions will your research bring to your field?

Step 4: Clarifying your research aims and objectives

We mentioned earlier that the introduction to a research paper can serve as a roadmap for what's within. We've also frequently discussed the need for clarity. This step addresses both of these.

When writing an argumentative paper, craft a thesis statement with impact. Clearly articulate what your position is and the main points you intend to present. This will map out for the reader exactly what they'll get from reading the rest.

For empirical papers, focus on formulating precise research questions and hypotheses. Directly link them to the gaps or issues you've identified in existing research to show the reader the precise direction your research paper will take.

Step 5: Sketching the blueprint of your study

Continue building a roadmap for your readers by designing a structured outline for the paper. Guide the reader through your research journey, explaining what the different sections will contain and their relationship to one another.

This outline should flow seamlessly as you move from section to section. Creating this outline early can also help guide the creation of the paper itself, resulting in a final product that's better organized. In doing so, you'll craft a paper where each section flows intuitively from the next.

Step 6: Integrating your research question

To avoid letting your research question get lost in background information or clarifications, craft your introduction in such a way that the research question resonates throughout. The research question should clearly address a gap in existing knowledge or offer a new perspective on an existing problem.

Tell users your research question explicitly but also remember to frequently come back to it. When providing context or clarification, point out how it relates to the research question. This keeps your focus where it needs to be and prevents the topic of the paper from becoming under-emphasized.

Step 7: Establishing the scope and limitations

So far, we've talked mostly about what's in the paper and how to convey that information to readers. The opposite is also important. Information that's outside the scope of your paper should be made clear to the reader in the introduction so their expectations for what is to follow are set appropriately.

Similarly, be honest and upfront about the limitations of the study. Any constraints in methodology, data, or how far your findings can be generalized should be fully communicated in the introduction.

Step 8: Concluding the introduction with a promise

The final few lines of the introduction are your last chance to convince people to continue reading the rest of the paper. Here is where you should make it very clear what benefit they'll get from doing so. What topics will be covered? What questions will be answered? Make it clear what they will get for continuing.

By providing a quick recap of the key points contained in the introduction in its final lines and properly setting the stage for what follows in the rest of the paper, you refocus the reader's attention on the topic of your research and guide them to read more.

• Research paper introduction best practices

Following the steps above will give you a compelling introduction that hits on all the key points an introduction should have. Some more tips and tricks can make an introduction even more polished.

As you follow the steps above, keep the following tips in mind.

Set the right tone and style

Like every piece of writing, a research paper should be written for the audience. That is to say, it should match the tone and style that your academic discipline and target audience expect. This is typically a formal and academic tone, though the degree of formality varies by field.

Kno w the audience

The perfect introduction balances clarity with conciseness. The amount of clarification required for a given topic depends greatly on the target audience. Knowing who will be reading your paper will guide you in determining how much background information is required.

Adopt the CARS (create a research space) model

The CARS model is a helpful tool for structuring introductions. This structure has three parts. The beginning of the introduction establishes the general research area. Next, relevant literature is reviewed and critiqued. The final section outlines the purpose of your study as it relates to the previous parts.

Master the art of funneling

The CARS method is one example of a well-funneled introduction. These start broadly and then slowly narrow down to your specific research problem. It provides a nice narrative flow that provides the right information at the right time. If you stray from the CARS model, try to retain this same type of funneling.

Incorporate narrative element

People read research papers largely to be informed. But to inform the reader, you have to hold their attention. A narrative style, particularly in the introduction, is a great way to do that. This can be a compelling story, an intriguing question, or a description of a real-world problem.

Write the introduction last

By writing the introduction after the rest of the paper, you'll have a better idea of what your research entails and how the paper is structured. This prevents the common problem of writing something in the introduction and then forgetting to include it in the paper. It also means anything particularly exciting in the paper isn’t neglected in the intro.

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Research Paper Introduction Examples

Looking for research paper introduction examples? Quotes, anecdotes, questions, examples, and broad statements—all of them can be used successfully to write an introduction for a research paper. It’s instructive to see them in action, in the hands of skilled academic writers.

Let’s begin with David M. Kennedy’s superb history, Freedom from Fear: The American People in Depression and War, 1929–1945 . Kennedy begins each chapter with a quote, followed by his text. The quote above chapter 1 shows President Hoover speaking in 1928 about America’s golden future. The text below it begins with the stock market collapse of 1929. It is a riveting account of just how wrong Hoover was. The text about the Depression is stronger because it contrasts so starkly with the optimistic quotation.

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“We in America today are nearer the final triumph over poverty than ever before in the history of any land.”—Herbert Hoover, August 11, 1928 Like an earthquake, the stock market crash of October 1929 cracked startlingly across the United States, the herald of a crisis that was to shake the American way of life to its foundations. The events of the ensuing decade opened a fissure across the landscape of American history no less gaping than that opened by the volley on Lexington Common in April 1775 or by the bombardment of Sumter on another April four score and six years later. (adsbygoogle = window.adsbygoogle || []).push({}); The ratcheting ticker machines in the autumn of 1929 did not merely record avalanching stock prices. In time they came also to symbolize the end of an era. (David M. Kennedy, Freedom from Fear: The American People in Depression and War, 1929–1945 . New York: Oxford University Press, 1999, p. 10)

Kennedy has exciting, wrenching material to work with. John Mueller faces the exact opposite problem. In Retreat from Doomsday: The Obsolescence of Major War , he is trying to explain why Great Powers have suddenly stopped fighting each other. For centuries they made war on each other with devastating regularity, killing millions in the process. But now, Mueller thinks, they have not just paused; they have stopped permanently. He is literally trying to explain why “nothing is happening now.” That may be an exciting topic intellectually, it may have great practical significance, but “nothing happened” is not a very promising subject for an exciting opening paragraph. Mueller manages to make it exciting and, at the same time, shows why it matters so much. Here’s his opening, aptly entitled “History’s Greatest Nonevent”:

On May 15, 1984, the major countries of the developed world had managed to remain at peace with each other for the longest continuous stretch of time since the days of the Roman Empire. If a significant battle in a war had been fought on that day, the press would have bristled with it. As usual, however, a landmark crossing in the history of peace caused no stir: the most prominent story in the New York Times that day concerned the saga of a manicurist, a machinist, and a cleaning woman who had just won a big Lotto contest. This book seeks to develop an explanation for what is probably the greatest nonevent in human history. (John Mueller, Retreat from Doomsday: The Obsolescence of Major War . New York: Basic Books, 1989, p. 3)

In the space of a few sentences, Mueller sets up his puzzle and reveals its profound human significance. At the same time, he shows just how easy it is to miss this milestone in the buzz of daily events. Notice how concretely he does that. He doesn’t just say that the New York Times ignored this record setting peace. He offers telling details about what they covered instead: “a manicurist, a machinist, and a cleaning woman who had just won a big Lotto contest.” Likewise, David Kennedy immediately entangles us in concrete events: the stunning stock market crash of 1929. These are powerful openings that capture readers’ interests, establish puzzles, and launch narratives.

Sociologist James Coleman begins in a completely different way, by posing the basic questions he will study. His ambitious book, Foundations of Social Theory , develops a comprehensive theory of social life, so it is entirely appropriate for him to begin with some major questions. But he could just as easily have begun with a compelling story or anecdote. He includes many of them elsewhere in his book. His choice for the opening, though, is to state his major themes plainly and frame them as a paradox. Sociologists, he says, are interested in aggregate behavior—how people act in groups, organizations, or large numbers—yet they mostly examine individuals:

A central problem in social science is that of accounting for the function of some kind of social system. Yet in most social research, observations are not made on the system as a whole, but on some part of it. In fact, the natural unit of observation is the individual person…  This has led to a widening gap between theory and research… (James S. Coleman, Foundations of Social Theory . Cambridge, MA: Harvard University Press, 1990, pp. 1–2)

After expanding on this point, Coleman explains that he will not try to remedy the problem by looking solely at groups or aggregate-level data. That’s a false solution, he says, because aggregates don’t act; individuals do. So the real problem is to show the links between individual actions and aggregate outcomes, between the micro and the macro.

The major problem for explanations of system behavior based on actions and orientations at a level below that of the system [in this case, on individual-level actions] is that of moving from the lower level to the system level. This has been called the micro-to-macro problem, and it is pervasive throughout the social sciences. (Coleman, Foundations of Social Theory , p. 6)

Explaining how to deal with this “micro-to-macro problem” is the central issue of Coleman’s book, and he announces it at the beginning.

Coleman’s theory-driven opening stands at the opposite end of the spectrum from engaging stories or anecdotes, which are designed to lure the reader into the narrative and ease the path to a more analytic treatment later in the text. Take, for example, the opening sentences of Robert L. Herbert’s sweeping study Impressionism: Art, Leisure, and Parisian Society : “When Henry Tuckerman came to Paris in 1867, one of the thousands of Americans attracted there by the huge international exposition, he was bowled over by the extraordinary changes since his previous visit twenty years before.” (Robert L. Herbert, Impressionism: Art, Leisure, and Parisian Society . New Haven, CT: Yale University Press, 1988, p. 1.) Herbert fills in the evocative details to set the stage for his analysis of the emerging Impressionist art movement and its connection to Parisian society and leisure in this period.

David Bromwich writes about Wordsworth, a poet so familiar to students of English literature that it is hard to see him afresh, before his great achievements, when he was just a young outsider starting to write. To draw us into Wordsworth’s early work, Bromwich wants us to set aside our entrenched images of the famous mature poet and see him as he was in the 1790s, as a beginning writer on the margins of society. He accomplishes this ambitious task in the opening sentences of Disowned by Memory: Wordsworth’s Poetry of the 1790s :

Wordsworth turned to poetry after the revolution to remind himself that he was still a human being. It was a curious solution, to a difficulty many would not have felt. The whole interest of his predicament is that he did feel it. Yet Wordsworth is now so established an eminence—his name so firmly fixed with readers as a moralist of self-trust emanating from complete self-security—that it may seem perverse to imagine him as a criminal seeking expiation. Still, that is a picture we get from The Borderers and, at a longer distance, from “Tintern Abbey.” (David Bromwich, Disowned by Memory: Wordsworth’s Poetry of the 1790s . Chicago: University of Chicago Press, 1998, p. 1)

That’s a wonderful opening! Look at how much Bromwich accomplishes in just a few words. He not only prepares the way for analyzing Wordsworth’s early poetry; he juxtaposes the anguished young man who wrote it to the self-confident, distinguished figure he became—the eminent man we can’t help remembering as we read his early poetry.

Let us highlight a couple of other points in this passage because they illustrate some intelligent writing choices. First, look at the odd comma in this sentence: “It was a curious solution, to a difficulty many would not have felt.” Any standard grammar book would say that comma is wrong and should be omitted. Why did Bromwich insert it? Because he’s a fine writer, thinking of his sentence rhythm and the point he wants to make. The comma does exactly what it should. It makes us pause, breaking the sentence into two parts, each with an interesting point. One is that Wordsworth felt a difficulty others would not have; the other is that he solved it in a distinctive way. It would be easy for readers to glide over this double message, so Bromwich has inserted a speed bump to slow us down. Most of the time, you should follow grammatical rules, like those about commas, but you should bend them when it serves a good purpose. That’s what the writer does here.

The second small point is the phrase “after the revolution” in the first sentence: “Wordsworth turned to poetry after the revolution to remind himself that he was still a human being.” Why doesn’t Bromwich say “after the French Revolution”? Because he has judged his book’s audience. He is writing for specialists who already know which revolution is reverberating through English life in the 1790s. It is the French Revolution, not the earlier loss of the American colonies. If Bromwich were writing for a much broader audience—say, the New York Times Book Review—he would probably insert the extra word to avoid confusion.

The message “Know your audience” applies to all writers. Don’t talk down to them by assuming they can’t get dressed in the morning. Don’t strut around showing off your book learnin’ by tossing in arcane facts and esoteric language for its own sake. Neither will win over readers.

Bromwich, Herbert, and Coleman open their works in different ways, but their choices work well for their different texts. Your task is to decide what kind of opening will work best for yours. Don’t let that happen by default, by grabbing the first idea you happen upon. Consider a couple of different ways of opening your thesis and then choose the one you prefer. Give yourself some options, think them over, then make an informed choice.

Using the Introduction to Map out Your Writing

Whether you begin with a story, puzzle, or broad statement, the next part of the research paper introduction should pose your main questions and establish your argument. This is your thesis statement—your viewpoint along with the supporting reasons and evidence. It should be articulated plainly so readers understand full well what your paper is about and what it will argue.

After that, give your readers a road map of what’s to come. That’s normally done at the end of the introductory section (or, in a book, at the end of the introductory chapter). Here’s John J. Mearsheimer presenting such a road map in The Tragedy of Great Power Politics . He not only tells us the order of upcoming chapters, he explains why he’s chosen that order and which chapters are most important:

The Plan of the Book The rest of the chapters in this book are concerned mainly with answering the six big questions about power which I identified earlier. Chapter 2, which is probably the most important chapter in the book, lays out my theory of why states compete for power and why they pursue hegemony. In Chapters 3 and 4, I define power and explain how to measure it. I do this in order to lay the groundwork for testing my theory… (John J. Mearsheimer, The Tragedy of Great Power Politics . New York: W. W. Norton, 2001, p. 27)

As this excerpt makes clear, Mearsheimer has already laid out his “six big questions” in the research paper introduction. Now he’s showing us the path ahead, the path to answering those questions.

At the end of the research paper introduction, give your readers a road map of what’s to come. Tell them what the upcoming sections will be and why they are arranged in this particular order.

Learn how to write an introduction for a research paper .

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• If you are writing in a new discipline, you should always make sure to ask about conventions and expectations for introductions, just as you would for any other aspect of the essay. For example, while it may be acceptable to write a two-paragraph (or longer) introduction for your papers in some courses, instructors in other disciplines, such as those in some Government courses, may expect a shorter introduction that includes a preview of the argument that will follow.  
• In some disciplines (Government, Economics, and others), it’s common to offer an overview in the introduction of what points you will make in your essay. In other disciplines, you will not be expected to provide this overview in your introduction.  
• Avoid writing a very general opening sentence. While it may be true that “Since the dawn of time, people have been telling love stories,” it won’t help you explain what’s interesting about your topic.  
• Avoid writing a “funnel” introduction in which you begin with a very broad statement about a topic and move to a narrow statement about that topic. Broad generalizations about a topic will not add to your readers’ understanding of your specific essay topic.  
• Avoid beginning with a dictionary definition of a term or concept you will be writing about. If the concept is complicated or unfamiliar to your readers, you will need to define it in detail later in your essay. If it’s not complicated, you can assume your readers already know the definition.  
• Avoid offering too much detail in your introduction that a reader could better understand later in the paper.
• picture_as_pdf Introductions

6 Examples of Research Paper Introductions to Hook Your Readers

Welcome to our guide on research paper introductions!

As you may already know, the introduction is a critical component of any research paper, as it sets the tone for the rest of the paper and establishes the reader’s expectations.

The introductory paragraph in a research paper should give an overview of what the reader can expect from the rest of the paper.

It should also establish a context for readers who are new to this topic. More importantly, when writing a research paper introduction, it’s best to focus on two key points: the problem being addressed and how this particular study (or studies) addresses it.

If those two points are clear then readers should be able to follow along as they read more into your paper.

In the following sections, we’ll provide you with examples of different types of research paper introductions to help you get started.

Types of Research Paper Introductions

General introductions.

A general introduction is suitable when you’re discussing a range of different topics or subjects within one paper. It provides the reader with an idea of where you stand in regard to the topic at hand and can be followed up with a sentence or two explaining your specific angle.

Topic: The Effect of Social Media on Mental Health

Social media has become an integral part of our daily lives, and its impact on mental health has become a subject of increasing concern in recent years. While social media platforms have provided a new means of communication and access to information, they have also been linked to negative mental health outcomes such as depression, anxiety, and low self-esteem. This research paper aims to explore the relationship between social media use and mental health outcomes. Specifically, we will investigate how social media affects individuals’ perceptions of themselves and their social relationships, as well as the potential impact on their emotional well-being. Through a thorough literature review and original research, we hope to shed light on the complex relationship between social media and mental health and provide insights into effective interventions for those who may be negatively impacted by social media use.

Topic: Formal Presentations at University

Most universities require their graduate-level courses to have some form of formal presentation such as a dissertation, master’s thesis, or doctoral dissertation. These presentations often take the form of an oral defense. Formal presentations provide both teachers and students with feedback in order to make future projects better. Teachers also use these projects to gauge student performance and provide guidance during group discussions throughout the course. What makes these oral defenses different than others is that they must adhere to strict guidelines set forth by the institution overseeing them. Failure to comply with these guidelines may result in expulsion from the university. Oral defenses typically contain three major parts: an opening statement, main body, and closing statement. However, some institutions may offer variations of this format. For instance, many institutions now require a written version of the presentation that includes all major aspects required by the institution.

Quote-Based Research Paper Introduction

This type of introduction is ideal for research papers that rely heavily on quotes to establish their point.

In these cases, quoting the most relevant piece of information is usually necessary because doing so will allow the reader to better understand what your discussion entails.

With that said, remember that every quote you include needs to add something significant and/or novel which hasn’t been covered before – otherwise it won’t be worth including in your paper!

Topic: International Student Success at the University Level

Shakespeare once said that “A rose by any other name would smell as sweet.” This line from Romeo and Juliet suggests that names don’t matter. Similarly, the fact that someone goes to school in a certain country does not affect the quality of education. Yet research has shown that international students perform worse academically than domestic ones in American colleges and universities. So, the question becomes: How do we foster success among international students? It is possible that differences in culture and socialization contribute to the observed gaps in academic achievement. Given that, our next step should be to examine the challenges faced by international students in an effort to find effective ways of addressing these challenges.

Topic: The Impact of Social Media on Mental Health

As Mark Twain once said, “Comparison is the death of joy.” In today’s world, social media platforms provide us with countless opportunities to compare our lives to those of others, often leading to feelings of inadequacy, anxiety, and depression. Research has shown that excessive social media use can have a negative impact on mental health, particularly among young adults. Given the increasing prevalence of social media in our daily lives, it’s important to explore this topic in more depth and understand the ways in which social media use can impact mental health outcomes.

Surprising Fact-based Introductions

A surprising fact-based introduction works well with scientific or medical topics where there is surprising new evidence that directly impacts how people view a certain issue. In such cases, it’s often necessary to give some background on what exactly is at stake in order to highlight why it’s important and relevant. Following that, you can introduce the key findings and what they mean.

Topic: The relationship between caffeine and weight loss

Caffeine is a well-known stimulant, which is consumed by millions of people on a daily basis in the form of coffee, tea, energy drinks, or pills. Although it’s unclear how much caffeine is too much for an individual to consume each day, it’s commonly believed that the positive effects of caffeine are canceled out by the increased appetite that results from drinking caffeinated beverages. But did you know that caffeine might actually help you lose weight?! Recent research conducted by a team of investigators from the Johns Hopkins Bloomberg School of Public Health and Harvard T.H. Chan School of Public Health found that the more caffeine an individual consumes, the lower their risk for obesity. That’s right: while it may sound counterintuitive, having one or two cups of coffee per day could actually decrease your chances of becoming overweight or obese.

Topic: The Benefits of Napping on Memory Retention

Did you know that a short nap can help boost your memory retention by up to 30%? Most people think of napping as something reserved for children or lazy adults, but recent research has shown that a short nap can actually be beneficial for cognitive function, particularly in regard to memory. In today’s fast-paced world, we often prioritize productivity over rest, but the science behind napping suggests that we should be doing the opposite. In this paper, we will explore the benefits of napping on memory retention and discuss how individuals and organizations can incorporate napping into their daily routines for optimal cognitive performance.

Explanatory research paper introductions

These types of research paper introductions are used when you’re introducing a new concept or idea that requires the audience to have knowledge of basic facts in order to follow along.

In this case, it’s critical that you provide the necessary background information and then follow up with a statement about why the rest of the research is interesting and/or relevant.

For example, you might say that the paper discusses a recent study on mindfulness and meditation.

In order to fully grasp the research and the claims being made, it’s necessary to first understand what mindfulness is and why it’s relevant. The following paragraphs would therefore serve as an introduction to both topics.

Topic: Mindfulness

Mindfulness is a mental state achieved by focusing one’s awareness on the present moment, while calmly acknowledging and accepting one’s feelings, thoughts, and bodily sensations. Regular practice of mindfulness can be highly beneficial to both mental and physical health. There are many different techniques for practicing mindfulness: Mindful walking, sitting with an open mind, eating without distractions, listening deeply to others, or simply noticing what you see in your environment. What’s most important is that you develop the ability to pay attention in a way that helps you connect with yourself and the world around you. And just like anything else, mindfulness takes practice. The best way to get started is by taking part in a course or program offered at your local community center, hospital, or online.

Topic: The Effectiveness of Online Learning in Higher Education

As more and more students turn to online learning to pursue their higher education, questions have arisen regarding the effectiveness of this type of education. While online learning offers a number of benefits, such as flexibility and convenience, it also presents unique challenges, including the lack of face-to-face interaction with instructors and classmates. This research paper aims to examine the effectiveness of online learning in higher education and compare it to traditional classroom-based learning. By conducting a literature review and analyzing data from surveys and interviews with students and instructors, this paper seeks to identify the advantages and disadvantages of online learning and provide recommendations for improving its effectiveness.

Narration-based paper introductions

This type of research paper introduction is used when you’re discussing a topic or event in detail.

You could talk about why it’s important, explain what happened and how it relates to your larger point, summarize what happened (as with a timeline), or present an example to prove your thesis.

Whatever you choose, it’s imperative that you make your readers want to keep reading.

This is done by telling a compelling story, using storytelling elements such as tension and conflict, or painting a vivid picture of the scene with sensory details.

Topic: The impact of stress on memory and learning

It’s well known that stress can impair our ability to learn new things, but it also has an impact on our memories. Well, I have first-hand experience with this. The night before my midterm, I had a major fight with my partner. This was one of the worst arguments we’ve ever had and it went on for hours. Needless to say, it stressed me out and there’s no doubt that it hurt my performance on the test. The funny thing is that in the days following the argument, my partner and I were able to clear everything up, so now we’re good again. But this experience taught me one very important lesson: the impact of stress on memory and learning might seem negligible but it can actually have a long-term impact on academic performance.

Topic: The Effects of Social Media on Mental Health

As I sit here scrolling through my Instagram feed, I can’t help but feel a sense of envy and inadequacy wash over me. The seemingly perfect lives of influencers and friends alike are on full display, leaving me to question why I don’t have the same level of success and happiness. It’s no secret that social media has become a ubiquitous part of our daily lives, with billions of people using platforms like Instagram, Facebook, and Twitter to connect with others and share their lives. But what are the effects of this constant exposure to other people’s carefully curated images and narratives? Are we putting ourselves at risk for developing mental health issues like anxiety and depression? In this paper, I will explore the research that has been done on the topic of social media and mental health, examining both the positive and negative effects that social media can have on our psychological well-being. By the end of this paper, you will have a better understanding of how social media impacts mental health and what steps we can take to mitigate its negative effects.

Teaser-based research paper introductions

The most common types of research paper introductions are teasers.

This simply means that your first sentence is a hook: something to grab your reader’s attention and make them want to read more.

One way to create a compelling teaser is by addressing an interesting question or controversial topic, such as “Why do some people succeed and others fail?”

Another approach is to pose a problem that you plan to solve.

Here are examples of a teaser-based research paper introductions.

Topic: Why do some people succeed and others fail?

Failure is a part of life. We all fail at one time or another, it’s just something that happens. But why do some people fail more than others? And what about people who never seem to fail? You see them every day, they are in your office and everywhere else you go. These people always seem to be successful and highly driven. How do they do it? This is a question that has puzzled psychologists and other social scientists for years. In the past, a lot of psychologists believed that success was due to differences in abilities and intelligence. Others said it depended on luck. Still, others believed that family background determined whether someone succeeded or not. As you can imagine, these explanations led to considerable debate and disagreement among scholars.

Topic: The Future of Artificial Intelligence in Healthcare

Are we on the cusp of a revolution in healthcare? With the rise of artificial intelligence (AI), the answer might just be yes. From machine learning algorithms that can identify diseases faster and more accurately than humans to chatbots that can answer patient questions 24/7, AI is poised to transform every aspect of healthcare. But as with any technology, there are risks and challenges that must be addressed. In this paper, we’ll explore the ways in which AI is being used in healthcare today and the potential implications for patients, doctors, and the healthcare industry as a whole. Buckle up, because the future is here, and it’s powered by AI.

Final Remarks: Research Paper Introductions

Crafting an effective research paper introduction can be challenging, but with the right approach and attention to detail, you can create an introduction that captures the reader’s attention and sets the stage for the rest of the paper.

Whether you choose a general introduction, a quote-based introduction, a surprising fact-based introduction, or an anecdotal introduction, be sure to clearly state your topic and thesis, provide background information, and engage your readers in meaning.

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How to Write a Research Introduction

Last Updated: December 6, 2023 Fact Checked

This article was co-authored by Megan Morgan, PhD . Megan Morgan is a Graduate Program Academic Advisor in the School of Public & International Affairs at the University of Georgia. She earned her PhD in English from the University of Georgia in 2015. There are 7 references cited in this article, which can be found at the bottom of the page. This article has been fact-checked, ensuring the accuracy of any cited facts and confirming the authority of its sources. This article has been viewed 2,652,575 times.

The introduction to a research paper can be the most challenging part of the paper to write. The length of the introduction will vary depending on the type of research paper you are writing. An introduction should announce your topic, provide context and a rationale for your work, before stating your research questions and hypothesis. Well-written introductions set the tone for the paper, catch the reader's interest, and communicate the hypothesis or thesis statement.

Introducing the Topic of the Paper

• In scientific papers this is sometimes known as an "inverted triangle", where you start with the broadest material at the start, before zooming in on the specifics. [2] X Research source
• The sentence "Throughout the 20th century, our views of life on other planets have drastically changed" introduces a topic, but does so in broad terms.
• It provides the reader with an indication of the content of the essay and encourages them to read on.

• For example, if you were writing a paper about the behaviour of mice when exposed to a particular substance, you would include the word "mice", and the scientific name of the relevant compound in the first sentences.
• If you were writing a history paper about the impact of the First World War on gender relations in Britain, you should mention those key words in your first few lines.

• This is especially important if you are attempting to develop a new conceptualization that uses language and terminology your readers may be unfamiliar with.

• If you use an anecdote ensure that is short and highly relevant for your research. It has to function in the same way as an alternative opening, namely to announce the topic of your research paper to your reader.
• For example, if you were writing a sociology paper about re-offending rates among young offenders, you could include a brief story of one person whose story reflects and introduces your topic.
• This kind of approach is generally not appropriate for the introduction to a natural or physical sciences research paper where the writing conventions are different.

Establishing the Context for Your Paper

• It is important to be concise in the introduction, so provide an overview on recent developments in the primary research rather than a lengthy discussion.
• You can follow the "inverted triangle" principle to focus in from the broader themes to those to which you are making a direct contribution with your paper.
• A strong literature review presents important background information to your own research and indicates the importance of the field.

• By making clear reference to existing work you can demonstrate explicitly the specific contribution you are making to move the field forward.
• You can identify a gap in the existing scholarship and explain how you are addressing it and moving understanding forward.

• For example, if you are writing a scientific paper you could stress the merits of the experimental approach or models you have used.
• Stress what is novel in your research and the significance of your new approach, but don't give too much detail in the introduction.
• A stated rationale could be something like: "the study evaluates the previously unknown anti-inflammatory effects of a topical compound in order to evaluate its potential clinical uses".

Specifying Your Research Questions and Hypothesis

• The research question or questions generally come towards the end of the introduction, and should be concise and closely focused.
• The research question might recall some of the key words established in the first few sentences and the title of your paper.
• An example of a research question could be "what were the consequences of the North American Free Trade Agreement on the Mexican export economy?"
• This could be honed further to be specific by referring to a particular element of the Free Trade Agreement and the impact on a particular industry in Mexico, such as clothing manufacture.
• A good research question should shape a problem into a testable hypothesis.

• If possible try to avoid using the word "hypothesis" and rather make this implicit in your writing. This can make your writing appear less formulaic.
• In a scientific paper, giving a clear one-sentence overview of your results and their relation to your hypothesis makes the information clear and accessible. [10] X Trustworthy Source PubMed Central Journal archive from the U.S. National Institutes of Health Go to source
• An example of a hypothesis could be "mice deprived of food for the duration of the study were expected to become more lethargic than those fed normally".

• This is not always necessary and you should pay attention to the writing conventions in your discipline.
• In a natural sciences paper, for example, there is a fairly rigid structure which you will be following.
• A humanities or social science paper will most likely present more opportunities to deviate in how you structure your paper.

Research Introduction Help

Community Q&A

• Use your research papers' outline to help you decide what information to include when writing an introduction. Thanks Helpful 0 Not Helpful 1
• Consider drafting your introduction after you have already completed the rest of your research paper. Writing introductions last can help ensure that you don't leave out any major points. Thanks Helpful 0 Not Helpful 0

• Avoid emotional or sensational introductions; these can create distrust in the reader. Thanks Helpful 50 Not Helpful 12
• Generally avoid using personal pronouns in your introduction, such as "I," "me," "we," "us," "my," "mine," or "our." Thanks Helpful 31 Not Helpful 7
• Don't overwhelm the reader with an over-abundance of information. Keep the introduction as concise as possible by saving specific details for the body of your paper. Thanks Helpful 24 Not Helpful 14

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• ↑ https://library.sacredheart.edu/c.php?g=29803&p=185916
• ↑ https://www.aresearchguide.com/inverted-pyramid-structure-in-writing.html
• ↑ https://libguides.usc.edu/writingguide/introduction
• ↑ https://writing.wisc.edu/Handbook/PlanResearchPaper.html
• ↑ https://dept.writing.wisc.edu/wac/writing-an-introduction-for-a-scientific-paper/
• ↑ https://writing.wisc.edu/handbook/assignments/planresearchpaper/
• ↑ http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3178846/

About This Article

To introduce your research paper, use the first 1-2 sentences to describe your general topic, such as “women in World War I.” Include and define keywords, such as “gender relations,” to show your reader where you’re going. Mention previous research into the topic with a phrase like, “Others have studied…”, then transition into what your contribution will be and why it’s necessary. Finally, state the questions that your paper will address and propose your “answer” to them as your thesis statement. For more information from our English Ph.D. co-author about how to craft a strong hypothesis and thesis, keep reading! Did this summary help you? Yes No

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How to write an introduction for a research paper

Learn how to write a strong and efficient research paper introduction by following the suitable structure and avoiding typical errors.

An introduction to any type of paper is sometimes misunderstood as the beginning; yet, an introduction is actually intended to present your chosen subject to the audience in a way that makes it more appealing and leaves your readers thirsty for more information. After the title and abstract, your audience will read the introduction, thus it’s critical to get off to a solid start.  

This article includes instructions on how to write an introduction for a research paper that engages the reader in your research. You can produce a strong opening for your research paper if you stick to the format and a few basic principles.

What is an introduction to a research paper?

An introduction is the opening section of a research paper and the section that a reader is likely to read first, in which the objective and goals of the subsequent writing are stated. 

The introduction serves numerous purposes. It provides context for your research, explains your topic and objectives, and provides an outline of the work. A solid introduction will establish the tone for the remainder of your paper, enticing readers to continue reading through the methodology, findings, and discussion. 

Even though introductions are generally presented at the beginning of a document, we must distinguish an introduction from the beginning of your research. An introduction, as the name implies, is supposed to introduce your subject without extending it. All relevant information and facts should be placed in the body and conclusion, not the introduction.

Structure of an introduction

Before explaining how to write an introduction for a research paper , it’s necessary to comprehend a structure that will make your introduction stronger and more straightforward.

A good hook

A hook is one of the most effective research introduction openers. A hook’s objective is to stimulate the reader’s interest to read the research paper.  There are various approaches you may take to generate a strong hook:  startling facts, a question, a brief overview, or even a quotation. 

Broad overview

Following an excellent hook, you should present a wide overview of your major issue and some background information on your research. If you’re unsure about how to begin an essay introduction, the best approach is to offer a basic explanation of your topic before delving into specific issues. Simply said, you should begin with general information and then narrow it down to your relevant topics.

After offering some background information regarding your research’s main topic, go on to give readers a better understanding of what you’ll be covering throughout your research. In this section of your introduction, you should swiftly clarify your important topics in the sequence in which they will be addressed later, gradually introducing your thesis statement. You can use some  The following are some critical questions to address in this section of your introduction: Who? What? Where? When? How? And why is that?

Thesis statement

The thesis statement, which must be stated in the beginning clause of your research since your entire research revolves around it, is the most important component of your research.

A thesis statement presents your audience with a quick overview of the research’s main assertion. In the body section of your work, your key argument is what you will expose or debate about it. An excellent thesis statement is usually very succinct, accurate, explicit, clear, and focused. Typically, your thesis should be at the conclusion of your introductory paragraph/section.

Tips for writing a strong introduction

Aside from the good structure, here are a few tips to make your introduction strong and accurate:

• Keep in mind the aim of your research and make sure your introduction supports it.
• Use an appealing and relevant hook that catches the reader’s attention right away.
• Make it obvious to your readers what your stance is.
• Demonstrate your knowledge of your subject.
• Provide your reader with a road map to help them understand what you will address throughout the research.
• Be succinct – it is advised that your opening introduction consists of around 8-9 percent of the overall amount of words in your article (for example, 160 words for a 2000 words essay). 
• Make a strong and unambiguous thesis statement.
• Explain why the article is significant in 1-2 sentences.
• Remember to keep it interesting.

Mistakes to avoid in your introduction

Check out what not to do and what to avoid now that you know the structure and how to write an introduction for a research paper .

• Lacking a feeling of direction or purpose.
• Giving out too much.
• Creating lengthy paragraphs.
• Excessive or insufficient background, literature, and theory.
• Including material that should be placed in the body and conclusion.
• Not writing enough or writing excessively.
• Using too many quotes.

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How To Write A Research Paper

Step-By-Step Tutorial With Examples + FREE Template

By: Derek Jansen (MBA) | Expert Reviewer: Dr Eunice Rautenbach | March 2024

For many students, crafting a strong research paper from scratch can feel like a daunting task – and rightly so! In this post, we’ll unpack what a research paper is, what it needs to do , and how to write one – in three easy steps. 🙂 

Overview: Writing A Research Paper

What (exactly) is a research paper.

• How to write a research paper
• Stage 1 : Topic & literature search
• Stage 2 : Structure & outline
• Stage 3 : Iterative writing
• Key takeaways

Let’s start by asking the most important question, “ What is a research paper? ”.

Simply put, a research paper is a scholarly written work where the writer (that’s you!) answers a specific question (this is called a research question ) through evidence-based arguments . Evidence-based is the keyword here. In other words, a research paper is different from an essay or other writing assignments that draw from the writer’s personal opinions or experiences. With a research paper, it’s all about building your arguments based on evidence (we’ll talk more about that evidence a little later).

Now, it’s worth noting that there are many different types of research papers , including analytical papers (the type I just described), argumentative papers, and interpretative papers. Here, we’ll focus on analytical papers , as these are some of the most common – but if you’re keen to learn about other types of research papers, be sure to check out the rest of the blog .

With that basic foundation laid, let’s get down to business and look at how to write a research paper .

Overview: The 3-Stage Process

While there are, of course, many potential approaches you can take to write a research paper, there are typically three stages to the writing process. So, in this tutorial, we’ll present a straightforward three-step process that we use when working with students at Grad Coach.

These three steps are:

• Finding a research topic and reviewing the existing literature
• Developing a provisional structure and outline for your paper, and
• Writing up your initial draft and then refining it iteratively

Let’s dig into each of these.

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Step 1: Find a topic and review the literature

As we mentioned earlier, in a research paper, you, as the researcher, will try to answer a question . More specifically, that’s called a research question , and it sets the direction of your entire paper. What’s important to understand though is that you’ll need to answer that research question with the help of high-quality sources – for example, journal articles, government reports, case studies, and so on. We’ll circle back to this in a minute.

The first stage of the research process is deciding on what your research question will be and then reviewing the existing literature (in other words, past studies and papers) to see what they say about that specific research question. In some cases, your professor may provide you with a predetermined research question (or set of questions). However, in many cases, you’ll need to find your own research question within a certain topic area.

Finding a strong research question hinges on identifying a meaningful research gap – in other words, an area that’s lacking in existing research. There’s a lot to unpack here, so if you wanna learn more, check out the plain-language explainer video below.

Once you’ve figured out which question (or questions) you’ll attempt to answer in your research paper, you’ll need to do a deep dive into the existing literature – this is called a “ literature search ”. Again, there are many ways to go about this, but your most likely starting point will be Google Scholar .

If you’re new to Google Scholar, think of it as Google for the academic world. You can start by simply entering a few different keywords that are relevant to your research question and it will then present a host of articles for you to review. What you want to pay close attention to here is the number of citations for each paper – the more citations a paper has, the more credible it is (generally speaking – there are some exceptions, of course).

Ideally, what you’re looking for are well-cited papers that are highly relevant to your topic. That said, keep in mind that citations are a cumulative metric , so older papers will often have more citations than newer papers – just because they’ve been around for longer. So, don’t fixate on this metric in isolation – relevance and recency are also very important.

Beyond Google Scholar, you’ll also definitely want to check out academic databases and aggregators such as Science Direct, PubMed, JStor and so on. These will often overlap with the results that you find in Google Scholar, but they can also reveal some hidden gems – so, be sure to check them out.

Once you’ve worked your way through all the literature, you’ll want to catalogue all this information in some sort of spreadsheet so that you can easily recall who said what, when and within what context. If you’d like, we’ve got a free literature spreadsheet that helps you do exactly that.

Step 2: Develop a structure and outline

With your research question pinned down and your literature digested and catalogued, it’s time to move on to planning your actual research paper .

It might sound obvious, but it’s really important to have some sort of rough outline in place before you start writing your paper. So often, we see students eagerly rushing into the writing phase, only to land up with a disjointed research paper that rambles on in multiple

Now, the secret here is to not get caught up in the fine details . Realistically, all you need at this stage is a bullet-point list that describes (in broad strokes) what you’ll discuss and in what order. It’s also useful to remember that you’re not glued to this outline – in all likelihood, you’ll chop and change some sections once you start writing, and that’s perfectly okay. What’s important is that you have some sort of roadmap in place from the start.

At this stage you might be wondering, “ But how should I structure my research paper? ”. Well, there’s no one-size-fits-all solution here, but in general, a research paper will consist of a few relatively standardised components:

• Introduction
• Literature review
• Methodology

Let’s take a look at each of these.

First up is the introduction section . As the name suggests, the purpose of the introduction is to set the scene for your research paper. There are usually (at least) four ingredients that go into this section – these are the background to the topic, the research problem and resultant research question , and the justification or rationale. If you’re interested, the video below unpacks the introduction section in more detail. 

The next section of your research paper will typically be your literature review . Remember all that literature you worked through earlier? Well, this is where you’ll present your interpretation of all that content . You’ll do this by writing about recent trends, developments, and arguments within the literature – but more specifically, those that are relevant to your research question . The literature review can oftentimes seem a little daunting, even to seasoned researchers, so be sure to check out our extensive collection of literature review content here .

With the introduction and lit review out of the way, the next section of your paper is the research methodology . In a nutshell, the methodology section should describe to your reader what you did (beyond just reviewing the existing literature) to answer your research question. For example, what data did you collect, how did you collect that data, how did you analyse that data and so on? For each choice, you’ll also need to justify why you chose to do it that way, and what the strengths and weaknesses of your approach were.

Now, it’s worth mentioning that for some research papers, this aspect of the project may be a lot simpler . For example, you may only need to draw on secondary sources (in other words, existing data sets). In some cases, you may just be asked to draw your conclusions from the literature search itself (in other words, there may be no data analysis at all). But, if you are required to collect and analyse data, you’ll need to pay a lot of attention to the methodology section. The video below provides an example of what the methodology section might look like.

By this stage of your paper, you will have explained what your research question is, what the existing literature has to say about that question, and how you analysed additional data to try to answer your question. So, the natural next step is to present your analysis of that data . This section is usually called the “results” or “analysis” section and this is where you’ll showcase your findings.

Depending on your school’s requirements, you may need to present and interpret the data in one section – or you might split the presentation and the interpretation into two sections. In the latter case, your “results” section will just describe the data, and the “discussion” is where you’ll interpret that data and explicitly link your analysis back to your research question. If you’re not sure which approach to take, check in with your professor or take a look at past papers to see what the norms are for your programme.

Alright – once you’ve presented and discussed your results, it’s time to wrap it up . This usually takes the form of the “ conclusion ” section. In the conclusion, you’ll need to highlight the key takeaways from your study and close the loop by explicitly answering your research question. Again, the exact requirements here will vary depending on your programme (and you may not even need a conclusion section at all) – so be sure to check with your professor if you’re unsure.

Step 3: Write and refine

Finally, it’s time to get writing. All too often though, students hit a brick wall right about here… So, how do you avoid this happening to you?

Well, there’s a lot to be said when it comes to writing a research paper (or any sort of academic piece), but we’ll share three practical tips to help you get started.

First and foremost , it’s essential to approach your writing as an iterative process. In other words, you need to start with a really messy first draft and then polish it over multiple rounds of editing. Don’t waste your time trying to write a perfect research paper in one go. Instead, take the pressure off yourself by adopting an iterative approach.

Secondly , it’s important to always lean towards critical writing , rather than descriptive writing. What does this mean? Well, at the simplest level, descriptive writing focuses on the “ what ”, while critical writing digs into the “ so what ” – in other words, the implications. If you’re not familiar with these two types of writing, don’t worry! You can find a plain-language explanation here.

Last but not least, you’ll need to get your referencing right. Specifically, you’ll need to provide credible, correctly formatted citations for the statements you make. We see students making referencing mistakes all the time and it costs them dearly. The good news is that you can easily avoid this by using a simple reference manager . If you don’t have one, check out our video about Mendeley, an easy (and free) reference management tool that you can start using today.

Recap: Key Takeaways

We’ve covered a lot of ground here. To recap, the three steps to writing a high-quality research paper are:

• To choose a research question and review the literature
• To plan your paper structure and draft an outline
• To take an iterative approach to writing, focusing on critical writing and strong referencing

Remember, this is just a b ig-picture overview of the research paper development process and there’s a lot more nuance to unpack. So, be sure to grab a copy of our free research paper template to learn more about how to write a research paper.

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Introductions

What this handout is about.

This handout will explain the functions of introductions, offer strategies for creating effective introductions, and provide some examples of less effective introductions to avoid.

The role of introductions

Introductions and conclusions can be the most difficult parts of papers to write. Usually when you sit down to respond to an assignment, you have at least some sense of what you want to say in the body of your paper. You might have chosen a few examples you want to use or have an idea that will help you answer the main question of your assignment; these sections, therefore, may not be as hard to write. And it’s fine to write them first! But in your final draft, these middle parts of the paper can’t just come out of thin air; they need to be introduced and concluded in a way that makes sense to your reader.

Your introduction and conclusion act as bridges that transport your readers from their own lives into the “place” of your analysis. If your readers pick up your paper about education in the autobiography of Frederick Douglass, for example, they need a transition to help them leave behind the world of Chapel Hill, television, e-mail, and The Daily Tar Heel and to help them temporarily enter the world of nineteenth-century American slavery. By providing an introduction that helps your readers make a transition between their own world and the issues you will be writing about, you give your readers the tools they need to get into your topic and care about what you are saying. Similarly, once you’ve hooked your readers with the introduction and offered evidence to prove your thesis, your conclusion can provide a bridge to help your readers make the transition back to their daily lives. (See our handout on conclusions .)

Note that what constitutes a good introduction may vary widely based on the kind of paper you are writing and the academic discipline in which you are writing it. If you are uncertain what kind of introduction is expected, ask your instructor.

Why bother writing a good introduction?

You never get a second chance to make a first impression. The opening paragraph of your paper will provide your readers with their initial impressions of your argument, your writing style, and the overall quality of your work. A vague, disorganized, error-filled, off-the-wall, or boring introduction will probably create a negative impression. On the other hand, a concise, engaging, and well-written introduction will start your readers off thinking highly of you, your analytical skills, your writing, and your paper.

Your introduction is an important road map for the rest of your paper. Your introduction conveys a lot of information to your readers. You can let them know what your topic is, why it is important, and how you plan to proceed with your discussion. In many academic disciplines, your introduction should contain a thesis that will assert your main argument. Your introduction should also give the reader a sense of the kinds of information you will use to make that argument and the general organization of the paragraphs and pages that will follow. After reading your introduction, your readers should not have any major surprises in store when they read the main body of your paper.

Ideally, your introduction will make your readers want to read your paper. The introduction should capture your readers’ interest, making them want to read the rest of your paper. Opening with a compelling story, an interesting question, or a vivid example can get your readers to see why your topic matters and serve as an invitation for them to join you for an engaging intellectual conversation (remember, though, that these strategies may not be suitable for all papers and disciplines).

Strategies for writing an effective introduction

Start by thinking about the question (or questions) you are trying to answer. Your entire essay will be a response to this question, and your introduction is the first step toward that end. Your direct answer to the assigned question will be your thesis, and your thesis will likely be included in your introduction, so it is a good idea to use the question as a jumping off point. Imagine that you are assigned the following question:

Drawing on the Narrative of the Life of Frederick Douglass , discuss the relationship between education and slavery in 19th-century America. Consider the following: How did white control of education reinforce slavery? How did Douglass and other enslaved African Americans view education while they endured slavery? And what role did education play in the acquisition of freedom? Most importantly, consider the degree to which education was or was not a major force for social change with regard to slavery.

You will probably refer back to your assignment extensively as you prepare your complete essay, and the prompt itself can also give you some clues about how to approach the introduction. Notice that it starts with a broad statement and then narrows to focus on specific questions from the book. One strategy might be to use a similar model in your own introduction—start off with a big picture sentence or two and then focus in on the details of your argument about Douglass. Of course, a different approach could also be very successful, but looking at the way the professor set up the question can sometimes give you some ideas for how you might answer it. (See our handout on understanding assignments for additional information on the hidden clues in assignments.)

Decide how general or broad your opening should be. Keep in mind that even a “big picture” opening needs to be clearly related to your topic; an opening sentence that said “Human beings, more than any other creatures on earth, are capable of learning” would be too broad for our sample assignment about slavery and education. If you have ever used Google Maps or similar programs, that experience can provide a helpful way of thinking about how broad your opening should be. Imagine that you’re researching Chapel Hill. If what you want to find out is whether Chapel Hill is at roughly the same latitude as Rome, it might make sense to hit that little “minus” sign on the online map until it has zoomed all the way out and you can see the whole globe. If you’re trying to figure out how to get from Chapel Hill to Wrightsville Beach, it might make more sense to zoom in to the level where you can see most of North Carolina (but not the rest of the world, or even the rest of the United States). And if you are looking for the intersection of Ridge Road and Manning Drive so that you can find the Writing Center’s main office, you may need to zoom all the way in. The question you are asking determines how “broad” your view should be. In the sample assignment above, the questions are probably at the “state” or “city” level of generality. When writing, you need to place your ideas in context—but that context doesn’t generally have to be as big as the whole galaxy!

Try writing your introduction last. You may think that you have to write your introduction first, but that isn’t necessarily true, and it isn’t always the most effective way to craft a good introduction. You may find that you don’t know precisely what you are going to argue at the beginning of the writing process. It is perfectly fine to start out thinking that you want to argue a particular point but wind up arguing something slightly or even dramatically different by the time you’ve written most of the paper. The writing process can be an important way to organize your ideas, think through complicated issues, refine your thoughts, and develop a sophisticated argument. However, an introduction written at the beginning of that discovery process will not necessarily reflect what you wind up with at the end. You will need to revise your paper to make sure that the introduction, all of the evidence, and the conclusion reflect the argument you intend. Sometimes it’s easiest to just write up all of your evidence first and then write the introduction last—that way you can be sure that the introduction will match the body of the paper.

Don’t be afraid to write a tentative introduction first and then change it later. Some people find that they need to write some kind of introduction in order to get the writing process started. That’s fine, but if you are one of those people, be sure to return to your initial introduction later and rewrite if necessary.

Open with something that will draw readers in. Consider these options (remembering that they may not be suitable for all kinds of papers):

• an intriguing example —for example, Douglass writes about a mistress who initially teaches him but then ceases her instruction as she learns more about slavery.
• a provocative quotation that is closely related to your argument —for example, Douglass writes that “education and slavery were incompatible with each other.” (Quotes from famous people, inspirational quotes, etc. may not work well for an academic paper; in this example, the quote is from the author himself.)
• a puzzling scenario —for example, Frederick Douglass says of slaves that “[N]othing has been left undone to cripple their intellects, darken their minds, debase their moral nature, obliterate all traces of their relationship to mankind; and yet how wonderfully they have sustained the mighty load of a most frightful bondage, under which they have been groaning for centuries!” Douglass clearly asserts that slave owners went to great lengths to destroy the mental capacities of slaves, yet his own life story proves that these efforts could be unsuccessful.
• a vivid and perhaps unexpected anecdote —for example, “Learning about slavery in the American history course at Frederick Douglass High School, students studied the work slaves did, the impact of slavery on their families, and the rules that governed their lives. We didn’t discuss education, however, until one student, Mary, raised her hand and asked, ‘But when did they go to school?’ That modern high school students could not conceive of an American childhood devoid of formal education speaks volumes about the centrality of education to American youth today and also suggests the significance of the deprivation of education in past generations.”
• a thought-provoking question —for example, given all of the freedoms that were denied enslaved individuals in the American South, why does Frederick Douglass focus his attentions so squarely on education and literacy?

Pay special attention to your first sentence. Start off on the right foot with your readers by making sure that the first sentence actually says something useful and that it does so in an interesting and polished way.

How to evaluate your introduction draft

Ask a friend to read your introduction and then tell you what they expect the paper will discuss, what kinds of evidence the paper will use, and what the tone of the paper will be. If your friend is able to predict the rest of your paper accurately, you probably have a good introduction.

Five kinds of less effective introductions

1. The placeholder introduction. When you don’t have much to say on a given topic, it is easy to create this kind of introduction. Essentially, this kind of weaker introduction contains several sentences that are vague and don’t really say much. They exist just to take up the “introduction space” in your paper. If you had something more effective to say, you would probably say it, but in the meantime this paragraph is just a place holder.

Example: Slavery was one of the greatest tragedies in American history. There were many different aspects of slavery. Each created different kinds of problems for enslaved people.

2. The restated question introduction. Restating the question can sometimes be an effective strategy, but it can be easy to stop at JUST restating the question instead of offering a more specific, interesting introduction to your paper. The professor or teaching assistant wrote your question and will be reading many essays in response to it—they do not need to read a whole paragraph that simply restates the question.

Example: The Narrative of the Life of Frederick Douglass discusses the relationship between education and slavery in 19th century America, showing how white control of education reinforced slavery and how Douglass and other enslaved African Americans viewed education while they endured. Moreover, the book discusses the role that education played in the acquisition of freedom. Education was a major force for social change with regard to slavery.

3. The Webster’s Dictionary introduction. This introduction begins by giving the dictionary definition of one or more of the words in the assigned question. Anyone can look a word up in the dictionary and copy down what Webster says. If you want to open with a discussion of an important term, it may be far more interesting for you (and your reader) if you develop your own definition of the term in the specific context of your class and assignment. You may also be able to use a definition from one of the sources you’ve been reading for class. Also recognize that the dictionary is also not a particularly authoritative work—it doesn’t take into account the context of your course and doesn’t offer particularly detailed information. If you feel that you must seek out an authority, try to find one that is very relevant and specific. Perhaps a quotation from a source reading might prove better? Dictionary introductions are also ineffective simply because they are so overused. Instructors may see a great many papers that begin in this way, greatly decreasing the dramatic impact that any one of those papers will have.

Example: Webster’s dictionary defines slavery as “the state of being a slave,” as “the practice of owning slaves,” and as “a condition of hard work and subjection.”

4. The “dawn of man” introduction. This kind of introduction generally makes broad, sweeping statements about the relevance of this topic since the beginning of time, throughout the world, etc. It is usually very general (similar to the placeholder introduction) and fails to connect to the thesis. It may employ cliches—the phrases “the dawn of man” and “throughout human history” are examples, and it’s hard to imagine a time when starting with one of these would work. Instructors often find them extremely annoying.

Example: Since the dawn of man, slavery has been a problem in human history.

5. The book report introduction. This introduction is what you had to do for your elementary school book reports. It gives the name and author of the book you are writing about, tells what the book is about, and offers other basic facts about the book. You might resort to this sort of introduction when you are trying to fill space because it’s a familiar, comfortable format. It is ineffective because it offers details that your reader probably already knows and that are irrelevant to the thesis.

Example: Frederick Douglass wrote his autobiography, Narrative of the Life of Frederick Douglass, An American Slave , in the 1840s. It was published in 1986 by Penguin Books. In it, he tells the story of his life.

And now for the conclusion…

Writing an effective introduction can be tough. Try playing around with several different options and choose the one that ends up sounding best to you!

Just as your introduction helps readers make the transition to your topic, your conclusion needs to help them return to their daily lives–but with a lasting sense of how what they have just read is useful or meaningful. Check out our handout on  conclusions for tips on ending your paper as effectively as you began it!

Works consulted

We consulted these works while writing this handout. This is not a comprehensive list of resources on the handout’s topic, and we encourage you to do your own research to find additional publications. Please do not use this list as a model for the format of your own reference list, as it may not match the citation style you are using. For guidance on formatting citations, please see the UNC Libraries citation tutorial . We revise these tips periodically and welcome feedback.

Douglass, Frederick. 1995. Narrative of the Life of Frederick Douglass, an American Slave, Written by Himself . New York: Dover.

You may reproduce it for non-commercial use if you use the entire handout and attribute the source: The Writing Center, University of North Carolina at Chapel Hill

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Organizing Academic Research Papers: 4. The Introduction

• Purpose of Guide
• Design Flaws to Avoid
• Glossary of Research Terms
• Narrowing a Topic Idea
• Broadening a Topic Idea
• Extending the Timeliness of a Topic Idea
• Academic Writing Style
• Choosing a Title
• Making an Outline
• Paragraph Development
• Executive Summary
• Background Information
• The Research Problem/Question
• Theoretical Framework
• Citation Tracking
• Content Alert Services
• Evaluating Sources
• Primary Sources
• Secondary Sources
• Tertiary Sources
• What Is Scholarly vs. Popular?
• Qualitative Methods
• Quantitative Methods
• Using Non-Textual Elements
• Limitations of the Study
• Common Grammar Mistakes
• Avoiding Plagiarism
• Footnotes or Endnotes?
• Further Readings
• Annotated Bibliography
• Dealing with Nervousness
• Using Visual Aids
• Grading Someone Else's Paper
• How to Manage Group Projects
• Multiple Book Review Essay
• Reviewing Collected Essays
• About Informed Consent
• Writing Field Notes
• Writing a Policy Memo
• Writing a Research Proposal
• Acknowledgements

The introduction serves the purpose of leading the reader from a general subject area to a particular field of research. It establishes the context of the research being conducted by summarizing current understanding and background information about the topic, stating the purpose of the work in the form of the hypothesis, question, or research problem, briefly explaining your rationale, methodological approach, highlighting the potential outcomes your study can reveal, and describing the remaining structure of the paper.

Key Elements of the Research Proposal. Prepared under the direction of the Superintendent and by the 2010 Curriculum Design and Writing Team. Baltimore County Public Schools.

Importance of a Good Introduction

Think of the introduction as a mental road map that must answer for the reader these four questions:

• What was I studying?
• Why was this topic important to investigate?
• What did we know about this topic before I did this study?
• How will this study advance our knowledge?

A well-written introduction is important because, quite simply, you never get a second chance to make a good first impression. The opening paragraph of your paper will provide your readers with their initial impressions about the logic of your argument, your writing style, the overall quality of your research, and, ultimately, the validity of your findings and conclusions. A vague, disorganized, or error-filled introduction will create a negative impression, whereas, a concise, engaging, and well-written introduction will start your readers off thinking highly of your analytical skills, your writing style, and your research approach.

Introductions . The Writing Center. University of North Carolina.

Structure and Writing Style

I. Structure and Approach

The introduction is the broad beginning of the paper that answers three important questions for the reader:

• What is this?
• Why am I reading it?
• What do you want me to think about / consider doing / react to?

Think of the structure of the introduction as an inverted triangle of information. Organize the information so as to present the more general aspects of the topic early in the introduction, then narrow toward the more specific topical information that provides context, finally arriving at your statement of purpose and rationale and, whenever possible, the potential outcomes your study can reveal.

These are general phases associated with writing an introduction:

• Highlighting the importance of the topic, and/or
• Making general statements about the topic, and/or
• Presenting an overview on current research on the subject.
• Opposing an existing assumption, and/or
• Revealing a gap in existing research, and/or
• Formulating a research question or problem, and/or
• Continuing a disciplinary tradition.
• Stating the intent of your study,
• Outlining the key characteristics of your study,
• Describing important results, and
• Giving a brief overview of the structure of the paper.

NOTE: Even though the introduction is the first main section of a research paper, it is often useful to finish the introduction very late in the writing process because the structure of the paper, the reporting and analysis of results, and the conclusion will have been completed and it ensures that your introduction matches the overall structure of your paper.

II.  Delimitations of the Study

Delimitations refer to those characteristics that limit the scope and define the conceptual boundaries of your study . This is determined by the conscious exclusionary and inclusionary decisions you make about how to investigate the research problem. In other words, not only should you tell the reader what it is you are studying and why, but you must also acknowledge why you rejected alternative approaches that could have been used to examine the research problem.

Obviously, the first limiting step was the choice of research problem itself. However, implicit are other, related problems that could have been chosen but were rejected. These should be noted in the conclusion of your introduction.

Examples of delimitating choices would be:

• The key aims and objectives of your study,
• The research questions that you address,
• The variables of interest [i.e., the various factors and features of the phenomenon being studied],
• The method(s) of investigation, and
• Any relevant alternative theoretical frameworks that could have been adopted.

Review each of these decisions. You need to not only clearly establish what you intend to accomplish, but to also include a declaration of what the study does not intend to cover. In the latter case, your exclusionary decisions should be based upon criteria stated as, "not interesting"; "not directly relevant"; “too problematic because..."; "not feasible," and the like. Make this reasoning explicit!

NOTE: Delimitations refer to the initial choices made about the broader, overall design of your study and should not be confused with documenting the limitations of your study discovered after the research has been completed.

III. The Narrative Flow

Issues to keep in mind that will help the narrative flow in your introduction :

• Your introduction should clearly identify the subject area of interest . A simple strategy to follow is to use key words from your title in the first few sentences of the introduction. This will help focus the introduction on the topic at the appropriate level and ensures that you get to the primary subject matter quickly without losing focus, or discussing information that is too general.
• Establish context by providing a brief and balanced review of the pertinent published literature that is available on the subject. The key is to summarize for the reader what is known about the specific research problem before you did your analysis. This part of your introduction should not represent a comprehensive literature review but consists of a general review of the important, foundational research literature (with citations) that lays a foundation for understanding key elements of the research problem. See the drop-down tab for "Background Information" for types of contexts.
• Clearly state the hypothesis that you investigated . When you are first learning to write in this format it is okay, and actually preferable, to use a past statement like, "The purpose of this study was to...." or "We investigated three possible mechanisms to explain the...."
• Why did you choose this kind of research study or design? Provide a clear statement of the rationale for your approach to the problem studied. This will usually follow your statement of purpose in the last paragraph of the introduction.

IV. Engaging the Reader

The overarching goal of your introduction is to make your readers want to read your paper. The introduction should grab your reader's attention. Strategies for doing this can be to:

• Open with a compelling story,
• Include a strong quotation or a vivid, perhaps unexpected anecdote,
• Pose a provocative or thought-provoking question,
• Describe a puzzling scenario or incongruity, or
• Cite a stirring example or case study that illustrates why the research problem is important.

NOTE:   Only choose one strategy for engaging your readers; avoid giving an impression that your paper is more flash than substance.

Freedman, Leora  and Jerry Plotnick. Introductions and Conclusions . University College Writing Centre. University of Toronto; Introduction . The Structure, Format, Content, and Style of a Journal-Style Scientific Paper. Department of Biology. Bates College; Introductions . The Writing Center. University of North Carolina; Introductions . The Writer’s Handbook. Writing Center. University of Wisconsin, Madison; Introductions, Body Paragraphs, and Conclusions for an Argument Paper. The Writing Lab and The OWL. Purdue University; Resources for Writers: Introduction Strategies . Program in Writing and Humanistic Studies. Massachusetts Institute of Technology; Sharpling, Gerald. Writing an Introduction . Centre for Applied Linguistics, University of Warwick; Writing Your Introduction. Department of English Writing Guide. George Mason University.

Writing Tip

Avoid the "Dictionary" Introduction

Giving the dictionary definition of words related to the research problem may appear appropriate because it is important to define specific words or phrases with which readers may be unfamiliar. However, anyone can look a word up in the dictionary and a general dictionary is not a particularly authoritative source. It doesn't take into account the context of your topic and doesn't offer particularly detailed information. Also, placed in the context of a particular discipline, a term may have a different meaning than what is found in a general dictionary. If you feel that you must seek out an authoritative definition, try to find one that is from subject specific dictionaries or encyclopedias [e.g., if you are a sociology student, search for dictionaries of sociology].

Saba, Robert. The College Research Paper . Florida International University; Introductions . The Writing Center. University of North Carolina.

Another Writing Tip

When Do I Begin?

A common question asked at the start of any paper is, "where should I begin?" An equally important question to ask yourself is, "When do I begin?" Research problems in the social sciences rarely rest in isolation from the history of the issue being investigated. It is, therefore, important to lay a foundation for understanding the historical context underpinning the research problem. However, this information should be brief and succinct and begin at a point in time that best informs the reader of study's overall importance. For example, a study about coffee cultivation and export in West Africa as a key stimulus for local economic growth needs to describe the beginning of exporting coffee in the region and establishing why economic growth is important. You do not need to give a long historical explanation about coffee exportation in Africa. If a research problem demands a substantial exploration of historical context, do this in the literature review section; note in the introduction as part of your "roadmap" [see below] that you covering this in the literature review.

Yet Another Writing Tip

Always End with a Roadmap

The final paragraph or sentences of your introduction should forecast your main arguments and conclusions and provide a description of the rest of the paper [a "roadmap"] that let's the reader know where you are going and what to expect.

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• The Scientist University

How to Write a Good Introduction Section

A strong narrative is as integral a part of science writing as it is for any other form of communication..

Nathan Ni holds a PhD from Queens University. He is a science editor for The Scientist’s Creative Services Team who strives to better understand and communicate the relationships between health and disease.

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Learn about our editorial policies.

First impressions are important. Scientists need to make their work stand out among a sea of others. However, many mistakenly believe that first impressions are formed based only on titles and abstracts. In actuality, the introduction section is critical to making a real impression on the audience. The introduction is where authors outline their research topic and describe their study. It is where they provide background information and showcase their writing and argumentation styles. For these reasons, the introduction engages the audience in a deeper way than the formalities and rigidities of the title and abstract can afford. To use a fishing analogy: if the title and the abstract serve as the hook and the bait, then the introduction is the process of actually reeling the fish into the boat.

Good Introductions Are Important Guides

In contrast to the constraints placed on the title and abstract, the introduction is the first real opportunity for the scientist to engage with their audience and showcase and convey their passions and motivations for the study in question. This opportunity is somewhat of a double-edged sword. Study authors inevitably have a treasure trove of knowledge and expertise when it comes to their projects and their fields. However, they must remember that the audience does not necessarily have this background information—and that they are only engaging with their audience for a finite amount of time. Despite the urge to excitedly write about all of the different aspects and intricacies of the project, it is very important that authors keep their introductions simple and well organized. 

Therefore, the introduction should move from broad scopes to narrow focuses as the audience reads further. The author should direct the reader along this journey, focusing on topics with direct relevance to what was investigated in the study. A broad fact introduced early on should be linked or paired with a more specific fact along the same lines of thought, eventually culminating in how this information led to the motivation behind the study itself. It is vital to not go off on tangents or talk about things that are too esoteric. A confused audience is an audience that tends not to read further.

Applying Common Principles Across Well-Known and Niche Subjects

Writers can apply these principles in more specialized manuscripts focusing on a single entity rather than a well-known pathology. Consider the following example from a  manuscript by cell biologist Luis R. Cruz-Vera’s research team from the University of Alabama in Huntsville, published in the Journal of Biological Chemistry. 1

Here, they divide the opening paragraph of their introduction into four distinct sections. First, they explain what ribosome arresting peptides (RAPs) are and what they do.

Ribosome arresting peptides (RAPs) are nascent polypeptides that act in cis on the translating ribosome to control the expression of genes by inducing ribosome arrest during translation elongation or termination. RAPs commonly sense external forces or low molecular weight compounds in the environment that spatially and temporally contribute to the expression of genes. 

Then they introduce the two different types of RAPs.

RAPs such as SecM that sense external forces on the ribosome are typically large, because these nascent peptides have a domain that functions outside of the ribosome. In contrast, those that sense small molecules inside of the ribosome, such as TnaC are smaller. 

They describe how each type works via a different mechanism.

Typically, larger RAPs interact with cellular factors that can control their capacity for arresting ribosomes. Because of their size and proximity to ribosomal components, large RAPs clearly show two structural domains, a sensor domain and an arresting domain. At the moment of the arrest for the large RAPs, the sensor domain is located outside the ribosome exit tunnel, whereas the arresting domain remains inside the tunnel. The short RAPs currently characterized interact with the compounds that they sense by using the ribosome exit tunnel as a binding surface. For these short RAPs, it has been determined that conserved amino acid residues are necessary to induce arrest by either directly binding the effector molecule or by acting at the peptidyl-transferase center (PTC) during ribosome arrest. 

And finally, they conclude by highlighting a knowledge gap in how small RAPs operate versus what is already known about large RAPs.

However, because the size of short RAPs ranges from only a few to a couple of dozen amino acids, as in the case of TnaC, it has remained unclear whether short RAPs are constituted by the two independent sensor and stalling domains, as it has been observed with larger RAPs.

In this way, the authors make a natural progression from “why this topic is important” to “what is known about this topic,” setting the stage for “what is unknown about this topic and why it should be studied.” 

Gradually Moving from Broad to Narrow

These principles can be further transferred towards the introductory section as a whole. The first paragraph should serve as an introduction to the field and the topic. The middle paragraph(s) provide exposition and detail regarding what is known and unknown, and what has already been done and still remains to do, and the final paragraph outlines the study and its principle findings, providing a transition into either the materials and methods or the results section. 

For example, this work by radiation oncologist Eric Deutsch’s group at Université Paris-Saclay,  published in PLoS One , 2 opens by succinctly explaining a scientific problem: “ the threat of extensive dispersion of radioactive isotopes within populated areas that would have an unfortunate effect on human health has increased drastically .” It then offers the call to action necessitated by this problem: “ the development of a decorporating agent capable of effectively mitigating the effects of a wide range of isotopes is critical .”

In the next two paragraphs, the study authors provide information on how and why dispersion of radioactive isotopes are a problem—“ the FDA has approved only three compounds (only one of which is used as a preventative therapy) for the treatment of exposure to specific radioactive elements ”—and highlights the strengths and weaknesses of what is currently available. They then introduce the focal point of their own work, chitosan@DOTAGA, within this context, explaining its potential as a solution to the problem they previously introduced: “ After oral administration to rodents over several days, no signs of acute or chronic toxicity were observed, and DOTAGA did not enter the blood stream and was fully eliminated from the gastrointestinal tract within 24 hours of administration. ”

Finally, the introduction concludes by listing the study objective—“ explore the potential of this polymer for use in the decorporation of a wide range of radioactive isotopes ”—and the motivations and rationale behind the study objective—“ there are no suitable countermeasures available for uranium poisoning. […] This innovative approach aims to directly chelate the radioactive cations, specifically uranium, within the gastrointestinal tract prior to their systemic absorption, which ensures their prompt elimination and mitigation of the associated toxicities. ”

The Introduction Engages with the Reader

The introduction section is often overlooked in favor of the title and the abstract, but it serves two important functions. First, it gives the audience all of the information that it needs to contextualize the yet-to-be-presented data within the context of the problem that needs to be solved or the scientific question that needs to be addressed. Second, and more importantly, it justifies the importance of the study, of its initiative, rationale, and purpose. The introduction is the author’s best—and arguably only real—opportunity to convince the audience that their study is worth reading.  

Looking for more information on scientific writing? Check out  The Scientist’s   TS SciComm  section. Looking for some help putting together a manuscript, a figure, a poster, or anything else?  The Scientist’s   Scientific Services  may have the professional help that you need.

• Judd HNG, et al.  Functional domains of a ribosome arresting peptide are affected by surrounding nonconserved residues . J Biol Chem . 2024;300(3):105780.
• Durand A, et al.  Enhancing radioprotection: A chitosan-based chelating polymer is a versatile radioprotective agent for prophylactic and therapeutic interventions against radionuclide contamination . PLoS One . 2024;19(4):e0292414.

Related community Research Resources

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The Fundamentals of Academic Science Writing

Literature Review Introduction Example For Inspiration

Get inspired with this literature review introduction example that will help kickstart your process. Learn to present your literature effectively.

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What Is A Literature Review Introduction?

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Assessment of the FY 2016 Survey of Nonprofit Research Activities to Determine Whether Data Meet Current Statistical Standards for Publication

Working papers are intended to report exploratory results of research and analysis undertaken by the National Center for Science and Engineering Statistics (NCSES) within the National Science Foundation (NSF). Any opinions, findings, conclusions, or recommendations expressed in this working paper do not necessarily reflect the views of NSF. This working paper has been released to inform interested parties of ongoing research or activities and to encourage further discussion of the topic.

This working paper describes an assessment of the data in the FY 2016 Survey of Nonprofit Research Activities to identify estimates that would meet the NCSES quality criteria for official statistics. Please see the corresponding InfoBrief ( https://ncses.nsf.gov/pubs/nsf22337 /) and data tables ( https://ncses.nsf.gov/pubs/nsf22338/ ) for the estimates that meet the criteria for NCSES official statistics.

The Survey of Nonprofit Research Activities (NPRA Survey) collects information on activities related to research and development that are performed or funded by nonprofits in the United States. The NPRA Survey is part of the data collection portfolio directed by the National Center for Science and Engineering Statistics (NCSES) within the National Science Foundation (NSF). The FY 2016 NPRA Survey was conducted in 2018 with a sample of nonprofit organizations in the United States. The overall response rate was 48% unweighted and 61% weighted. Due to a low response rate, particularly for certain subgroups such as hospitals (35% unweighted and 45% weighted response rate), not all of the NPRA Survey data met NCSES’ criteria for official statistics. NCSES decided to undertake additional assessment in order to determine the subset of NPRA data that would meet the current NCSES statistical standards required for official release. This working paper identifies which data from the FY 2016 NPRA Survey met NCSES’ statistical standards. This document summarizes the steps taken to conduct this additional assessment, and it also includes detailed information on the data quality comparisons.

Introduction

The National Center for Science and Engineering Statistics (NCSES) conducted the Survey of Nonprofit Research Activities (NPRA Survey) to collect information on activities related to research and development that are performed or funded by nonprofits in the United States. ​ An organization is considered a nonprofit if it is categorized by the Internal Revenue Service as a 501(c)(3) public charity, a 501(c)(3) private foundation, or another exempt organization—e.g., a 501(c)(4), 501(c)(5), or 501(c)(6). A pilot survey was conducted from September 2016 through February 2017 that collected FY 2015 data, ​ The pilot survey data were provided by the respondents for testing purposes only and were not published. and a full implementation of the survey was conducted in 2018 that collected FY 2016 data.

The survey obtained a 48% unweighted response rate overall (61% weighted response rate). However, response rates varied across groups, with the lowest response rate from hospitals (35% unweighted and 45% weighted response rate). Due to high nonresponse rate, not all of the NPRA Survey data meet NCSES’s criteria for official statistics as outlined in the NCSES statistical standards for information products (released in September 2020). At the conclusion of the FY 2016 survey, NCSES decided to proceed with discussing the results via a working paper, FY 2016 Nonprofit Research Activities Survey: Summary of Methodology, Assessment of Quality, and Synopsis of Results. Working Paper NCSES 21-202. Alexandria, VA: National Science Foundation, National Center for Science and Engineering. Available at https://www.nsf.gov/statistics/2021/ncses21202/ ." data-bs-content="Britt R, Jankowski J; National Center for Science and Engineering Statistics (NCSES). 2021. FY 2016 Nonprofit Research Activities Survey: Summary of Methodology, Assessment of Quality, and Synopsis of Results. Working Paper NCSES 21-202. Alexandria, VA: National Science Foundation, National Center for Science and Engineering. Available at https://www.nsf.gov/statistics/2021/ncses21202/ ." data-endnote-uuid="84623eba-d8d5-47ff-b8a5-788c7185d8e3">​ Britt R, Jankowski J; National Center for Science and Engineering Statistics (NCSES). 2021. FY 2016 Nonprofit Research Activities Survey: Summary of Methodology, Assessment of Quality, and Synopsis of Results. Working Paper NCSES 21-202. Alexandria, VA: National Science Foundation, National Center for Science and Engineering. Available at https://www.nsf.gov/statistics/2021/ncses21202/ . which gave caveats that all data did not meet the criteria for official statistics. At the same time, NCSES decided to undertake additional assessment to determine the subset of NPRA Survey data that would meet the current NCSES statistical standards required for official release. This document reflects the results of that additional assessment.

The data quality of the NPRA Survey was assessed based on the Federal Committee on Statistical Methodology (FCSM) Framework for Data Quality . https://nces.ed.gov/fcsm/pdf/FCSM.20.04_A_Framework_for_Data_Quality.pdf ." data-bs-content="Federal Committee on Statistical Methodology. 2020. A Framework for Data Quality. FCSM 20-04. Available at https://nces.ed.gov/fcsm/pdf/FCSM.20.04_A_Framework_for_Data_Quality.pdf ." data-endnote-uuid="e6909e1a-4979-4237-b31c-ac59869f9274">​ Federal Committee on Statistical Methodology. 2020. A Framework for Data Quality. FCSM 20-04. Available at https://nces.ed.gov/fcsm/pdf/FCSM.20.04_A_Framework_for_Data_Quality.pdf . The framework states, “Data quality is the degree to which data capture the desired information using appropriate methodology in a manner that sustains public trust.” Therefore, NCSES’s assessment of the NPRA Survey data is guided by the three FCSM data quality dimensions—utility, objectivity, and integrity.

Utility refers to the extent to which information is well-targeted to identified and anticipated needs; it reflects the usefulness of the information to the intended users. Objectivity refers to whether information is accurate, reliable, and unbiased, and is presented in an accurate, clear and interpretable, and unbiased manner. Integrity refers to the maintenance of rigorous scientific standards and the protection of information from manipulation or influence as well as unauthorized access or revision. (p. 3)

The nonprofit sector is one of four major sectors of the economy (i.e., business, government, higher education, and nonprofit organizations) that perform or fund R&D. ​ The nonprofit sector includes nonprofit organizations other than government or academia. R&D performed by nonprofits that receive federal funds is reported on in the Survey of Federal Funds for Research and Development. R&D performed by higher education nonprofits is reported on in the Higher Education Research and Development Survey. Historically, NCSES has combined nonprofit sector data with data from the other three sectors to estimate total national R&D expenditures, which are presented in the annual report National Patterns of R&D Resources . The other three sectors are surveyed annually; however, prior to fielding the pilot NPRA Survey, NCSES had last collected R&D data from nonprofit organizations in 1997. That mail survey was based on a sample of 1,131 nonprofit organizations that were prescreened as performing or funding R&D worth at least $250,000 in 1996. Since the 1997 survey, the National Patterns of R&D Resources has relied on statistical modeling based on the results of the 1996–97 Survey of Research and Development Funding and Performance by Nonprofit Organizations, supplemented by information from the Survey of Federal Funds for Research and Development, to continue estimation of the nonprofit sector’s R&D expenditures.

The primary objective of the NPRA Survey is to fill in data gaps in the National Patterns of R&D Resources in such a way that the data are compatible with the data collected on other sectors of the U.S. economy and are appropriate for international comparisons. The results of the FY 2016 NPRA Survey provide the first estimates of nonprofit R&D activity in the United States since the late 1990s, as well as a better understanding of the scope and nature of R&D in the nonprofit sector.

From a Framework for Data Quality utility perspective, specifically the relevance and timeliness dimensions, the NPRA Survey will improve NCSES’s estimate of total R&D from the nonprofit sector for publication in the National Patterns of R&D Resources . Conducted in 2018, with a FY 2016 reference year, the NPRA Survey provides more current data than the existing source (1997 with annual adjustments). Moreover, the growth of the nonprofit sector highlights the relevancy of these data to accurately measure the share of R&D from the nonprofit sector.

Summary of NPRA Survey Methodology

A sample of nonprofit organizations was selected from the Internal Revenue Service (IRS) Exempt Organizations Business Master File Extract. Organizations filing Form 990 (public charities) and Form 990-PF (private foundations) were eligible. Organizations were stratified based on their estimated likelihood of performing or funding research. The stratification included a set of organizations “known” to perform or fund research since they were identified as performers or funders in auxiliary data sources, including past survey data from NCSES (2010–13 Survey of Federal Science and Engineering Support to Universities, Colleges, and Nonprofit Institutions, 2009 Survey of Science and Engineering Research Facilities, and 1996 and 1997 Survey of Research and Development Funding and Performance by Nonprofit Organizations), association and society memberships (Association of Independent Research Institutes, Consortium of Social Science Associations, Science Philanthropy Alliance, Health Research Alliance), and other sources (affiliates of the Higher Education Research and Development Survey, Grant Station Funder Database, and sources discovered through cognitive interviews). These organizations were selected with certainty.

The NPRA Survey staff attempted to contact U.S.-based nonprofit organizations using a two-phase approach to obtain information about whether the organization performed or funded research. ​ Throughout this document, the term “research” is synonymous with “research and development” or “R&D.” Some organizations’ performer and funder status were known based on auxiliary data sources (see previous paragraph). Organizations in the sample with an unknown performer or funder status were sent a screener card in phase 1, which began in February 2018.

Phase 2, which began in April 2018, included the phase 1 organizations that reported either performing or funding R&D during phase 1 (including those that did not respond) and organizations with a known performer or funder status through sources external to the survey. Performer and funder status (i.e., whether an organization performed research, funded research, or both in FY 2016) was then confirmed in phase 2, and organizations that either performed or funded research were asked to complete additional questions about their research activities. Performer or funder status could have been obtained in either data collection phase 1 or phase 2, but research activity questionnaires were only completed in phase 2.

Overall response rates were calculated by using best practices established by the American Association for Public Opinion Research ( https://www.aapor.org/Standards-Ethics/Standard-Definitions-(1).aspx ). Organizations that reported no R&D activity in phase 1 or phase 2 were considered complete surveys and were included in the numerator of response rate calculations. Organizations that reported performing or funding R&D in phase 1 or phase 2 and completed some or all of the full questionnaire, with a minimum of the total amounts answered (Q9 and Q16), were considered complete or partial surveys and were included in the numerator of response rate calculations. Organizations that reported performing or funding in phase 1 but did not complete the phase 2 questionnaire were not included in the numerator of response rate calculations.

Imputation was conducted for organizations that reported that they performed or funded research (in phase 1 or phase 2) but did not provide information on the amounts spent in the full questionnaire. These organizations were considered nonrespondents. The imputation included substituted values using auxiliary data about the amounts spent performing or funding research (including information reported in annual reports and IRS filings, as well as information from the pilot survey), information from the pilot survey, and model-based imputations. The imputed amount represented about 30% of the overall total amount performing R&D, with 20% from auxiliary data and the pilot and 10% from the imputation model. Nonresponse weights were used to account for organizations that did not respond about their performing or funding status in either phase 1 or phase 2. These organizations were considered nonrespondents. After reviewing nonresponse adjustment alternatives by using total expenses and total organizations, the nonresponse adjustment was ultimately based on a ratio estimator using total expenses considering its correlation with the survey outcomes of total R&D performance (0.49) and funding (0.27).

NPRA Survey Adherence to NCSES Statistical Standards

NCSES has a set of statistical standards for the release of “official statistics,” specifically

Standard 9.2: The statistical quality of official statistics must undergo rigorous program review and statistical review and approved by the chief statistician for releasing.

Guideline 9.2a: The reliability of official statistics must meet the following quality criteria:

• Top line estimates have a coefficient of variation (CV) < 5%.
• The estimated CV for the majority of the key estimates is ≤ 30%.

Guideline 9.2b: The indicators of accuracy of official statistics must meet the following quality criteria:

• Unit response rates >60%.
• Item response rates >70%.
• Coverage ratios for population groups associated with key estimates are >70%.
• Above thresholds may not apply if nonresponse bias analyses are at an acceptable level.

The NCSES standards focus on the aspects of accuracy, including response rates, data missingness, and frame coverage as well as precision. These elements align with the accuracy and reliability dimension of the objectivity domain. Demonstrating that the NPRA Survey produces accurate and reliable estimates of total R&D performing and funding is the primary focus of this assessment. Therefore, we summarize the metrics as compared to the standard in table 1 and follow with a more detailed description for each standard.

FY 2016 NPRA Survey adherence to standards

CV = coefficient of variation; NPRA Survey = Survey of Nonprofit Research Activities.

a Does not include imputation variance. Amount of performance and funding was imputed for organizations that confirmed that they fund or perform research but did not provide the amount. No imputation was conducted for total expenses, performance status, or funding status. b Includes imputations using substitutions based on auxiliary data.    

For the CV, the total number of responding organizations is 3,254. When evaluating total expenses, the CV is 0.5%, well below the 5% CV standard. However, the sample was designed to optimize total expenses, so other estimates are expected to have higher variability. The CV for the proportion of performing organizations and proportion of funding organizations are 12%. The high CVs are largely due to the low proportions of nonprofits that reported performing and funding R&D, 6% (+/−1.4%) and 4% (+/−1.0%) respectively. However, the confidence intervals are small for both of these estimates. The CVs for the mean performance and mean funding are both 8%. These CVs, based on a subset of organizations that indicated they perform and fund research, meet the CV standard of 30% for the majority of key estimates but not the CV standard of 5% for the top line estimates. Since imputation is a separate criterion, these CV estimates are based only on sampling variance. Table 2 includes additional CVs for total performance and funding amounts by source, R&D type, and field as well as the mean number of full-time equivalents. All but nine of the estimates meet the standard of a 30% CV for key estimates.

National Center for Science and Engineering Statistics, Survey of Nonprofit Research Activities, FY 2016.

CV . The total number of responding organizations is 3,254. When evaluating total expenses, the CV is 0.5%, well below the 5% CV standard. However, the sample was designed to optimize total expenses, so other estimates are expected to have higher variability. The CVs for the proportion of performing organizations and proportion of funding organizations are 12%. The high CVs are largely due to the low proportions of nonprofits that reported performing and funding R&D, 6% (+/−1.4%) and 4% (+/−1.0%), respectively. However, the confidence intervals are small for both of these estimates. The CVs for the mean performance and mean funding are both 8%. These CVs, based on a subset of organizations that indicated they perform and fund research, meet the CV standard of 30% for the majority of key estimates but not the CV standard of 5% for the top line estimates. Since imputation is a separate criterion, these CV estimates are based only on sampling variance. Table 2 includes additional CVs for total performance and funding amounts by source, R&D type, and field as well as the mean number of full-time equivalents. All but nine of the estimates meet the standard of a 30% CV for key estimates.

Total amount spent on R&D by nonprofits that performed or funded R&D and coefficient of variation of FY 2016 NPRA Survey, by source, R&D type, and field

NPRA Survey = Survey of Nonprofit Research Activities.

a Does not include imputation variance.

Details for full-time equivalent do not add to total because of missing data.

Coverage ratio . Based on analysis conducted during the sampling, 85% of performers and 88% of funders are estimated to be covered in the frame, which is well above the NCSES threshold of 70% coverage. The frame coverage estimates are based on an analysis of the percentage of “likely” performers and “likely” funders on the frame after exclusions based on type of organization (e.g., educational institutions or churches) and the size truncation based on total expenses for public charities or total assets for private foundations. The exclusions and truncation were conducted to increase the efficiency of finding R&D performers and funders. Since the exclusions focused on organization types that are not likely to perform or fund or are small in terms of overall expenses or assets, the undercoverage most likely has little impact on the estimated total R&D performance and funding.

Unit response rate . The unweighted response rate (48%) falls short of the 60% standard. The weighted response rate (61%), which uses the sampling weights for all 6,373 sample organizations (6,071 identified as eligible), does meet the standard. The difference in the unweighted and weighted response rates means that the average weight for responders (mean weight = 23.6) is higher than that for nonresponders (14.2). Unweighted and weighted response rates provide distinct measures of survey quality. Unweighted response rates are an indicator of success with data collection operations. FY 2016 Nonprofit Research Activities Survey: Summary of Methodology, Assessment of Quality, and Synopsis of Results at https://www.nsf.gov/statistics/2021/ncses21202/#chp5 ." data-bs-content="For more information on lessons learned regarding data collection operations, see the Working Paper, FY 2016 Nonprofit Research Activities Survey: Summary of Methodology, Assessment of Quality, and Synopsis of Results at https://www.nsf.gov/statistics/2021/ncses21202/#chp5 ." data-endnote-uuid="10238958-b178-46ab-a4af-c5220649ee7c">​ For more information on lessons learned regarding data collection operations, see the Working Paper, FY 2016 Nonprofit Research Activities Survey: Summary of Methodology, Assessment of Quality, and Synopsis of Results at https://www.nsf.gov/statistics/2021/ncses21202/#chp5 . Weighted response rates are most useful when the sampling fractions vary across strata in a sample design and when the interest is population-level inference about the amount of information captured from the population sampled.

Both unweighted and weighted response rates are important metrics for evaluating the quality of the data. Although the weighted response rate meets the standard, the unweighted response rate does not. Therefore, additional analysis measuring the impact of nonresponse is required.

Item response rate . The amount of imputation for performing status (28%) and funding status (17%) meets the minimum threshold for item response, as does the imputation for funding amount (26%). However, the performing amount is just below the standard with 32% of the responses imputed (289 of 912).

Nonresponse bias . The response rate and the item response rate evaluations both include metrics that do not meet the NCSES quality standards. The standards state that the nonresponse standard threshold may be exceeded if the estimate for nonresponse bias is acceptable. The nonresponse bias is a function of the weighted response rate and the weighted mean difference between the respondents and nonrespondents is as follows:

is the weighted response rate,

is the weighted respondent mean, and

is the weighted nonrespondent mean.

The estimated nonresponse bias was a mean bias of −4 million for total expenses (overall mean = 13, respondent mean = 9). This was a relative bias of −0.451 ( table 3 ). This result suggests that organizations with higher amounts of expenses were less likely to respond than those with lower total expenses. This is confirmed from the response rates for deciles based on total expenses presented in table 4 . The lowest response rates occur in deciles 9 and 10, the organizations with the highest amount of expenses. Over 50% of the organizations in these deciles are hospitals, the organization type experiencing lowest response. When removing organizations in deciles 9 and 10, the relative bias is decreased to −0.112 (data not shown), demonstrating that the largest organizations contribute the majority of bias in the total.

Estimated bias of expenses, assets, and revenues in the FY 2016 NPRA Survey

a The sample analyzed in this this table excludes 302 cases identified as being out of sample. In addition, 31 organizations had missing expenses and revenues; 32 had missing assets.

The imputation and nonresponse adjustments were informed by the nonresponse bias analysis. The imputations were prioritized based on previous data from the pilot survey as well as administrative data for the largest organizations. These substitutions reduced the bias of total expenses to −0.336. Further, the imputation model predicting the amount of performance and funding based on total expenses reduces the nonresponse bias to −0.169 for total expenses.

To address higher nonresponse for hospitals and larger organizations, the nonresponse adjustment cells included hospitals and a flag identifying the largest 500 organizations in terms of expenses. The nonresponse adjustment was based on a ratio adjustment using total expenses. Therefore, the bias is 0 when evaluating weighted nonresponse bias in terms of total expenses. Further, if successful, the nonresponse adjustment based on expenses will reduce the nonresponse bias for correlated measures such as assets and revenues. The relative bias in assets (−0.403) and revenues (−0.414) are similarly high based on the full and partially completed surveys. After weighting, the nonresponse bias is reduced to +0.046 for total assets and +0.014 for total revenues.

Considering that hospitals and health organizations tended to have lower response rates, an indicator for hospitals and non-hospitals was included when defining the nonresponse adjustment cells. The result was low relative bias for health and medical organizations when measuring total expenses (−0.04), total assets (−0.03), and total revenues (−0.04) (data not shown).

In summary, although the nonresponse bias is high, the information available on the nonrespondents allows for imputation and nonresponse adjustments to address these observed biases. Assuming R&D performance and funding expenditures are correlated with the size of the organization based on expenses, the risk of nonresponse bias is reduced. This is the case when measuring assets and revenues, which were not used in the weighting but are both correlated with expenses. We cannot directly measure the reduction in the bias for total performing and total funding since we do not have data for nonrespondents. However, we can evaluate the correlation of expenses and R&D performance and funding using the respondents to the survey. Table 4 provides the mean R&D performance and R&D funding for each expense decile. Both increase as the deciles of total expenses increase. The log-log imputation models used for the NPRA Survey are further evidence of a relationship between expenses and R&D performance and funding, where total expenses was a significant predictor for both models, 0.54 (standard error = 0.08) for total performing and 0.47 (standard error = 0.09) for total funding.

Response rate of nonprofits to the FY 2016 NPRA Survey, by expense decile, and percentage of hospitals in each expense decile

Decile 1 has the least number of expenses, and the decile 10 has the most expenses.

Recommendations for Data Tables to Publish as Official Statistics

The final domain of the Framework for Data Quality is the integrity domain, which focuses on the data producer and the unbiased development of data that instills confidence in its accuracy. This assessment and the rigorous review of these data before publication speak directly to the scientific integrity and credibility dimensions:

Scientific integrity refers to an environment that ensures adherence to scientific standards, use of established scientific methods to produce and disseminate objective data products, and protection of these products from inappropriate political influence.

Credibility characterizes the confidence that users place in data products based simply on the qualifications and past performance of the data producer.

The NPRA Survey was designed to provide timely and relevant data to meet a long-standing need for information on R&D expenditures within the nonprofit sector. As noted in this report, low response rates called into question the quality of the data. The quality assessment included a thorough review of the error sources, including sampling error, response rates, frame coverage error, item nonresponse, and nonresponse bias. Further, the assessment reviewed the post-survey adjustments (e.g., weighting and imputation) designed to mitigate the risk of bias. This process of additional assessment identified which data from the NPRA Survey meet the NCSES statistical standards and illuminated the aspects of the data that should not be published.

Based on this additional assessment, we recommend publishing a set of high-level summary data tables, shown in appendix A, as NCSES official statistics. The tables cover all categories in table 2 except field, due to the high CVs for several fields. Variance estimates are based on successive difference replication using 80 replicates. The CVs in the appendix tables include both the sampling variance and imputation variance. All estimates are under the CV standard of 30%.

As part of the post survey evaluation report, we evaluated the stability of the variance estimates by comparing variance estimates with 80 replicates to the variance estimates based on 160 replicates. The CV for the total R&D performance was 13.2% for 80 replicates and 13.6% for 160 replicates. The CV for the total R&D funding was 18.0% for 80 replicates and 16.1% for 160 replicates. For the estimates in appendix A, three estimates exceeded the 30% CV standard when using 160 replicates instead of 80 replicates. These included the following:

Appendix table 1-A . Total R&D expenditures sourced from nonprofits (31%)

Appendix table 7-A . Total funds for R&D from internal funds (CV = 31%)

Appendix table 9-A . Nonfederal funds for R&D for other nonprofit organizations (CV = 34%)

All other estimates have a CV under 30%.

Specifically, this subset of FY 2016 NPRA data will be published via a Data Release InfoBrief and a set of data tables ( https://ncses.nsf.gov/pubs/nsf22337 / and https://ncses.nsf.gov/pubs/nsf22338/ ). Technical notes published with the data tables will also be provided to summarize the survey methodology and the data limitations. The technical notes will reference this working paper where additional survey information is provided, including details about the initial assessment of the NPRA survey estimates.

1 An organization is considered a nonprofit if it is categorized by the Internal Revenue Service as a 501(c)(3) public charity, a 501(c)(3) private foundation, or another exempt organization—e.g., a 501(c)(4), 501(c)(5), or 501(c)(6).

2 The pilot survey data were provided by the respondents for testing purposes only and were not published.

3 Britt R, Jankowski J; National Center for Science and Engineering Statistics (NCSES). 2021. FY 2016 Nonprofit Research Activities Survey: Summary of Methodology, Assessment of Quality, and Synopsis of Results. Working Paper NCSES 21-202. Alexandria, VA: National Science Foundation, National Center for Science and Engineering. Available at https://www.nsf.gov/statistics/2021/ncses21202/ .

4 Federal Committee on Statistical Methodology. 2020. A Framework for Data Quality. FCSM 20-04. Available at https://nces.ed.gov/fcsm/pdf/FCSM.20.04_A_Framework_for_Data_Quality.pdf .

5 The nonprofit sector includes nonprofit organizations other than government or academia. R&D performed by nonprofits that receive federal funds is reported on in the Survey of Federal Funds for Research and Development. R&D performed by higher education nonprofits is reported on in the Higher Education Research and Development Survey.

6 Throughout this document, the term “research” is synonymous with “research and development” or “R&D.”

7 For more information on lessons learned regarding data collection operations, see the Working Paper, FY 2016 Nonprofit Research Activities Survey: Summary of Methodology, Assessment of Quality, and Synopsis of Results at https://www.nsf.gov/statistics/2021/ncses21202/#chp5 .

Appendix A. Data Tables with Relative Standard Errors

Suggested citation.

Britt R, Mamon S, ZuWallack R; National Center for Science and Engineering Statistics (NCSES). 2022. Assessment of the FY 2016 Survey of Nonprofit Research Activities to Determine Whether Data Meet Current Statistical Standards for Publication . Working Paper NCSES 22-212. Alexandria, VA: National Science Foundation. Available at https://ncses.nsf.gov/pubs/ncses22212/ .

Report Authors

Ronda Britt Survey Manager, NCSES

Sherri Mamon ICF, under contract to NCSES

Randal ZuWallack ICF, under contract to NCSES

National Center for Science and Engineering Statistics Directorate for Social, Behavioral and Economic Sciences National Science Foundation 2415 Eisenhower Avenue, Suite W14200 Alexandria, VA 22314 Tel: (703) 292-8780 FIRS: (800) 877-8339 TDD: (800) 281-8749 E-mail: [email protected]

Source Data & Analysis

InfoBrief (NSF 22-337) and Data Tables (NSF 22-338)

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Technology as a Tool for Improving Patient Safety

Introduction .

In the past several decades, technological advances have opened new possibilities for improving patient safety. Using technology to digitize healthcare processes has the potential to increase standardization and efficiency of clinical workflows and to reduce errors and cost across all healthcare settings. 1 However, if technological approaches are designed or implemented poorly, the burden on clinicians can increase. For example, overburdened clinicians can experience alert fatigue and fail to respond to notifications. This can lead to more medical errors. As a testament to the significance of this topic in recent years, several government agencies [(e.g. the Agency for Healthcare Research and Quality (AHRQ) and the Centers for Medicare and Medicaid services (CMS)] have developed resources to help healthcare organizations integrate technology, such as the Safety Assurance Factors for EHR Resilience (SAFER) guides developed by the Office of the National Coordinator for Health Information Technology (ONC). 2,3,4  However, there is some evidence that these resources have not been widely used.5 Recently, the Centers for Medicare & Medicaid Services (CMS) started requiring hospitals to use the SAFER guides as part of the FY 2022 Hospital Inpatient Prospective Payment Systems (IPPS), which should raise awareness and uptake of the guides. 6

During 2022, research into technological approaches was a major theme of articles on PSNet. Researchers reviewed all relevant articles on PSNet and consulted with Dr. A Jay Holmgren, PhD, and Dr. Susan McBride, PhD, subject matter experts in health IT and its role in patient safety. Key topics and themes are highlighted below.  

Clinical Decision Support  

The most prominent focus in the 2022 research on technology, based on the number of articles published on PSNet, was related to clinical decision support (CDS) tools. CDS provides clinicians, patients, and other individuals with relevant data (e.g. patient-specific information), purposefully filtered and delivered through a variety of formats and channels, to improve and enhance care. 7   

Computerized Patient Order Entry  

One of the main applications of CDS is in computerized patient order entry (CPOE), which is the process used by clinicians to enter and send treatment instructions via a computer application. 8 While the change from paper to electronic order entry itself can reduce errors (e.g., due to unclear handwriting or manual copy errors), research in 2022 showed that there is room for improvement in order entry systems, as well as some promising novel approaches. 

Two studies looked at the frequency of and reasons for medication errors in the absence of CDS and CPOE and demonstrated that there was a clear patient safety need. One study found that most medication errors occurred during the ordering or prescribing stage, and both this study and the other study found that the most common medication error was incorrect dose. Ongoing research, such as the AHRQ Medication Safety Measure Development project, aims to develop and validate measure specifications for wrong-patient, wrong-dose, wrong-medication, wrong-route, and wrong-frequency medication orders within EHR systems, in order to better understand and capture health IT safety events.9 Errors of this type could be avoided or at least reduced through the use of effective CPOE and CDS systems. However, even when CPOE and CDS are in place, errors can still occur and even be caused by the systems themselves. One study reviewed duplicate medication orders and found that 20% of duplicate orders resulted from technological issues, including alerts being overridden, alerts not firing, and automation issues (e.g., prefilled fields). A case study last year Illustrated one of the technological issues, in this case a manual keystroke error, that can lead to a safety event. A pharmacist mistakenly set the start date for a medication to the following year rather than the following day , which the CPOE system failed to flag. The authors recommended various alerts and coding changes in the system to prevent this particular error in the future.  

There were also studies in 2022 that showed successful outcomes of well-implemented CPOE systems. One in-depth pre-post, mixed-methods study showed that a fully implemented CPOE system significantly reduced specific serious and commonly occurring prescribing and procedural errors. The authors also presented evidence that it was cost-effective and detailed implementation lessons learned drawn from the qualitative data collected for the study. A specific CPOE function that demonstrated statistically significant improvement in 2022 was automatic deprescribing of medication orders and communication of the relevant information to pharmacies. Deprescribing is the planned and supervised process of dose reduction or stopping of a medication that is no longer beneficial or could be causing harm. That study showed an immediate and sustained 78% increase in successful discontinuations after implementation of the software. A second study on the same functionality determined that currently only one third to one half of medications are e-prescribed, and the study proposed that e-prescribing should be expanded to increase the impact of the deprescribing software. It should be noted, however, that the systems were not perfect and that a small percentage of medications were unintentionally cancelled. Finally, an algorithm to detect patients in need of follow-up after test results was developed and implemented in another study . The algorithm showed some process improvements, but outcome measures were not reported. 

Usability  

Usability of CDS systems was a large focus of research in 2022. Poorly designed systems that do not fit into existing workflows lead to frustrated users and increase the potential for errors. For example, if users are required to enter data in multiple places or prompted to enter data that are not available to them, they could find ways to work around the system or even cease to use it, increasing the potential for patient safety errors. The documentation burden is already very high on U.S. clinicians, 10 so it is important that novel technological approaches do not add to this burden but, if possible, alleviate it by offering a high level of usability and interoperability.  

One study used human-factored design in creating a CDS to diagnose pulmonary embolism in the Emergency Department and then surveyed clinician users about their experiences using the tool. Despite respondents giving the tool high usability ratings and reporting that the CDS was valuable, actual use of the tool was low. Based on the feedback from users, the authors proposed some changes to increase uptake, but both users and authors mentioned the challenges that arise when trying to change the existing workflow of clinicians without increasing their burden. Another study gathered qualitative feedback from clinicians on a theoretical CDS system for diagnosing neurological issues in the Emergency Department. In this study too, many clinicians saw the potential value in the CDS tool but had concerns about workflow integration and whether it would impact their ability to make clinical decisions. Finally, one study developed a dashboard to display various risk factors for multiple hospital-acquired infections and gathered feedback from users. The users generally found the dashboard useful and easy to learn, and they also provided valuable feedback on color scales, location, and types of data displayed. All of these studies show that attention to end user needs and preferences is necessary for successful implementation of CDS.  However, the recent market consolidation in Electronic Health Record vendors may have an impact on the amount of user feedback gathered and integrated into CDS systems. Larger vendors may have more resources to devote to improving the usability and design of CDS, or their near monopolies in the market may not provide an incentive to innovate further. 11 More research is needed as this trend continues.  

Alerts and Alarms 

Alerts and alarms are an important part of most CDS systems, as they can prompt clinicians with important and timely information during the treatment process. However, these alerts and alarms must be accurate and useful to elicit an appropriate response. The tradeoff between increased safety due to alerts and clinician alert fatigue is an important balance to strike. 12

Many studies in 2022 looked at clinician responses to medication-related alerts, including override and modification rates. Several of the studies found a high alert override rate but questioned the validity of using override rates alone as a marker of CDS effectiveness and usability. For example, one study looked at drug allergy alerts and found that although 44.8% of alerts were overridden, only 9.3% of those were inappropriately overridden, and very few overrides led to an adverse allergic reaction. A study on “do not give” alerts found that clinicians modified their orders to comply with alert recommendations after 78% of alerts but only cancelled orders after 26% of alerts. A scoping review looked at drug-drug interaction alerts and found similar results, including high override rates and the need for more data on why alerts are overridden. These findings are supported by another study that found that the underlying drug value sets triggering drug-drug interaction alerts are often inconsistent, leading to many inappropriate alerts that are then appropriately overridden by clinicians. These studies suggest that while a certain number of overrides should be expected, the underlying criteria for alert systems should be designed and regularly reviewed with specificity and sensitivity in mind. This will increase the frequency of appropriate alerts that foster indicated clinical action and reduce alert fatigue. 

There also seems to be variability in the effectiveness of alert systems across sites. One study looked at an alert to add an item to the problem list if a clinician placed an order for a medication that was not indicated based on the patient’s chart. The study found about 90% accuracy in alerts across two sites but a wide difference in the frequency of appropriate action between the sites (83% and 47%). This suggests that contextual factors at each site, such as culture and organizational processes, may impact success as much as the technology itself.  

A different study looked at the psychology of dismissing alerts using log data and found that dismissing alerts becomes habitual and that the habit is self-reinforcing over time. Furthermore, nearly three quarters of alerts were dismissed within 3 seconds. This indicates how challenging it can be to change or disrupt alert habits once they are formed. 

Artificial Intelligence and Machine Learning  

In recent years, one of the largest areas of burgeoning technology in healthcare has been artificial intelligence (AI) and machine learning. AI and machine learning use algorithms to absorb large amounts of historical and real-time data and then predict outcomes and recommend treatment options as new data are entered by clinicians. Research in 2022 showed that these techniques are starting to be integrated into EHR and CDS systems, but challenges remain. A full discussion of this topic is beyond the scope of this review. Here we limit the discussion to several patient-safety-focused resources posted on PSNet in 2022.  

One of the promising aspects of AI is its ability to improve CDS processes and clinician workflow overall. For example, one study last year looked at using machine learning to improve and filter CDS alerts. They found that the software could reduce alert volume by 54% while maintaining high precision. Reducing alert volume has the potential to alleviate alert fatigue and habitual overriding. Another topic explored in a scoping review was the use of AI to reduce adverse drug events. While only a few studies reviewed implementation in a clinical setting (most evaluated algorithm technical performance), several promising uses were found for AI systems that predict risk of an adverse drug event, which would facilitate early detection and mitigate negative effects.  

Despite enthusiasm for and promising applications of AI, implementation is slow. One of the challenges facing implementation is the variable quality of the systems. For example, a commonly used sepsis detection model was recently found to have very low sensitivity. 13 Algorithms also drift over time as new data are integrated, and this can affect performance, particularly during and after large disturbances like the COVID-19 pandemic. 14 There is also emerging research about the impact of AI algorithms on racial and ethnic biases in healthcare; at the time of publication of this essay, an AHRQ EPC was conducting a review of evidence on the topic. 15  These examples highlight the fact that AI is not a “set it and forget it” application; it requires monitoring and customization from a dedicated resource to ensure that the algorithms perform well over time. A related challenge is the lack of a strong business case for using high-quality AI. Because of this, many health systems choose to use out-of-the-box AI algorithms, which may be of poor quality overall (or are unsuited to particular settings) and may also be “black box” algorithms (i.e., not customizable by the health system because the vendor will not allow access to the underlying code). 16 The variable quality and the lack of transparency may cause mistrust by clinicians and overall aversion to AI interventions.  

In an attempt to address these concerns, one article in 2022 detailed best practices for AI implementation in health systems, focusing on the business case. Best practices include using AI to address a priority problem for the health system rather than treating it as an end itself. Additionally, testing the AI using the health system’s patients and data to demonstrate applicability and accuracy for that setting, confirming that the AI can provide a return on investment, and ensuring that the AI can be implemented easily and efficiently are also important. Another white paper described a human-factors and ergonomics framework for developing AI in order to improve the implementation within healthcare systems, teams, and workflows. The federal government and international organizations have also published AI guidelines, focusing on increasing trustworthiness (National Artificial Intelligence Initiative) 17 and ensuring ethical governance (World Health Organization). 18   

Conclusion and Next Steps 

As highlighted in this review, the scope and complexity of technology and its application in healthcare can be intimidating for healthcare systems to approach and implement. Researchers last year thus created a framework that health systems can use to assess their digital maturity and guide their plans for further integration.  

The field would benefit from more research in several areas in upcoming years. First and foremost, high-quality prospective outcome studies are needed to validate the effectiveness of the new technologies. Second, more work is needed on system usability, how the systems are integrated into workflows, and how they affect the documentation burden placed on clinicians. For CDS specifically, more focus is needed on patient-centered CDS (PC CDS), which supports patient-centered care by helping clinicians and patients make the best decisions given each individual’s circumstances and preferences. 19 AHRQ is already leading efforts in this field with their CDS Innovation Collaborative project. 20 Finally, as it becomes more common to incorporate EHR scribes to ease the documentation burden, research on their impact on patient safety will be needed, especially in relation to new technological approaches. For example, when a scribe encounters a CDS alert, do they alert the clinician in all cases? 

In addition to the approaches mentioned in this article, other emerging technologies in early stages of development hold theoretical promise for improving patient safety. One prominent example is “computer vision,” which uses cameras and AI to gather and process data on what physically happens in healthcare settings beyond what is captured in EHR data, 21 including being able to detect immediately that a patient fell in their room. 22  

As technology continues to expand and improve, researchers, clinicians, and health systems must be mindful of potential stumbling blocks that could impede progress and threaten patient safety. However, technology presents a wide array of opportunities to make healthcare more integrated, efficient, and safe.  

• Cohen CC, Powell K, Dick AW, et al. The Association Between Nursing Home Information Technology Maturity and Urinary Tract Infection Among Long-Term Residents . J Appl Gerontol . 2022;41(7):1695-1701. doi: 10.1177/07334648221082024. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9232878/
• https://www.healthit.gov/topic/safety/safer-guides
• https://cds.ahrq.gov/cdsconnect/repository
• https://www.cms.gov/about-cms/obrhi
• McBride S, Makar E, Ross A, et al. Determining awareness of the SAFER guides among nurse informaticists. J Inform Nurs. 2021;6(4). https://library.ania.org/ania/articles/713/view
• Sittig DF, Sengstack P, Singh H. Guidelines for US hospitals and clinicians on assessment of electronic health record safety using SAFER guides. J ama . 2022;327:719-720.
• https://library.ahima.org/doc?oid=300027#.Y-6RhXbMKHt
• https://www.healthit.gov/faq/what-computerized-provider-order-entry#:~:text=Computerized%20provider%20order%20entry%20(CPOE,paper%2C%20fax%2C%20or%20telephone
• https://digital.ahrq.gov/2018-year-review/research-spotlights/leveragin…
• Holmgren AJ, Downing NL, Bates DW, et al. Assessment of electronic health record use between US and non-US health systems. JAMA Intern Med. 2021;181:251-259. https://doi.org/10.1001/jamainternmed.2020.7071
• Holmgren AJ, Apathy NC. Trends in US hospital electronic health record vendor market concentration, 2012–2021. J Gen Intern Med. 2022. https://link.springer.com/article/10.1007/s11606-022-07917-3#citeas
• Co Z, Holmgren AJ, Classen DC, et al. The tradeoffs between safety and alert fatigue: data from a national evaluation of hospital medication-related clinical decision support. J Am Med Inform Assoc. 2020;27:1252-1258. https://pubmed.ncbi.nlm.nih.gov/32620948/
• Wong A, Otles E, Donnelly JP, et al. External validation of a widely implemented proprietary sepsis prediction model in hospitalized patients. JAMA Intern Med. 2021;181:1065-1070. https://jamanetwork.com/journals/jamainternalmedicine/fullarticle/2781307
• Parikh RB, Zhang Y, Kolla L, et al. Performance drift in a mortality prediction algorithm among patients with cancer during the SARS-CoV-2 pandemic. J Am Med Inform Assoc. 2022;30:348-354. https://academic.oup.com/jamia/advance-article/doi/10.1093/jamia/ocac221/6835770?login=false
• https://effectivehealthcare.ahrq.gov/products/racial-disparities-health…
• https://www.statnews.com/2022/05/24/market-failure-preventing-efficient-diffusion-health-care-ai-software/
• https://www.ai.gov/strategic-pillars/advancing-trustworthy-ai/
• Ethics and governance of artificial intelligence for health (WHO guidance). Geneva: World Health Organization; 2021. https://www.who.int/publications/i/item/9789240029200
• Dullabh P, Sandberg SF, Heaney-Huls K, et al. Challenges and opportunities for advancing patient-centered clinical decision support: findings from a horizon scan. J Am Med Inform Assoc. 2022: 29(7):1233-1243. doi: 10.1093/jamia/ocac059. PMID: 35534996; PMCID: PMC9196686.
• https://cds.ahrq.gov/cdsic
• Yeung S, Downing NL, Fei-Fei L, et al. Bedside computer vision: moving artificial intelligence from driver assistance to patient safety. N Engl J Med. 2018;387:1271-1273. https://www.nejm.org/doi/10.1056/NEJMp1716891
• Espinosa R, Ponce H, Gutiérrez S, et al. A vision-based approach for fall detection using multiple cameras and convolutional neural networks: a case study using the UP-Fall detection dataset. Comput Biol Med. 2019;115:103520. https://doi.org/10.1016/j.compbiomed.2019.103520

This project was funded under contract number 75Q80119C00004 from the Agency for Healthcare Research and Quality (AHRQ), U.S. Department of Health and Human Services. The authors are solely responsible for this report’s contents, findings, and conclusions, which do not necessarily represent the views of AHRQ. Readers should not interpret any statement in this report as an official position of AHRQ or of the U.S. Department of Health and Human Services. None of the authors has any affiliation or financial involvement that conflicts with the material presented in this report. View AHRQ Disclaimers

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The Retrievals. August 9, 2023

Agent of change. August 1, 2018

Amid lack of accountability for bias in maternity care, a California family seeks justice. August 16, 2023

Mirror, Mirror on the Wall: An Update on the Quality of American Health Care Through the Patient's Lens. April 12, 2006

Improving patient safety by shifting power from health professionals to patients. October 25, 2023

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Medicines-related harm in the elderly post-hospital discharge. March 27, 2019

Emergency department crowding: the canary in the health care system. November 3, 2021

Advancing Patient Safety: Reviews From the Agency for Healthcare Research and Quality's Making Healthcare Safer III Report. September 2, 2020

Exploring Alternatives To Malpractice Litigation. January 15, 2014

Making Healthcare Safer III. March 18, 2020

Special Section: Patient Safety. May 24, 2006

The Science of Simulation in Healthcare: Defining and Developing Clinical Expertise. November 19, 2008

Compendium of Strategies to Prevent HAIs in Acute Care Hospitals 2014. September 1, 2014

Quality, Safety, and Noninterpretive Skills. November 11, 2015

Patient Safety. November 21, 2018

Ambulatory Safety Nets to Reduce Missed and Delayed Diagnoses of Cancer

Remote response team and customized alert settings help improve management of sepsis.

Using sociotechnical theory to understand medication safety work in primary care and prescribers' use of clinical decision support: a qualitative study. May 24, 2023

Human factors and safety analysis methods used in the design and redesign of electronic medication management systems: a systematic review. May 17, 2023

Journal Article

Reducing hospital harm: establishing a command centre to foster situational awareness.

The potential for leveraging machine learning to filter medication alerts. May 4, 2022

Improving the specificity of drug-drug interaction alerts: can it be done? April 6, 2022

A qualitative study of prescribing errors among multi-professional prescribers within an e-prescribing system. December 23, 2020

The tradeoffs between safety and alert fatigue: data from a national evaluation of hospital medication-related clinical decision support. July 29, 2020

Assessment of health information technology-related outpatient diagnostic delays in the US Veterans Affairs health care system: a qualitative study of aggregated root cause analysis data. July 22, 2020

Reducing drug prescription errors and adverse drug events by application of a probabilistic, machine-learning based clinical decision support system in an inpatient setting. August 21, 2019

Improving medication-related clinical decision support. March 7, 2018

The frequency of inappropriate nonformulary medication alert overrides in the inpatient setting. April 6, 2016

The effect of provider characteristics on the responses to medication-related decision support alerts. July 15, 2015

Best practices: an electronic drug alert program to improve safety in an accountable care environment. July 1, 2015

Impact of computerized physician order entry alerts on prescribing in older patients. March 25, 2015

Differences of reasons for alert overrides on contraindicated co-prescriptions by admitting department. December 17, 2014

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Observing Internal Enigmatic Rock Structures from the Terminal Ediacaran of Namibia

Burrowing is a complex adaptation that was not seen until the Cambrian time period (540 Mya). The presence of burrowing in an earlier time could help to understand the world at that time and potentially why the Cambrian Explosion occurred. Using rock samples collected in Namibia from the late-Ediacaran, we perform an analysis through 3D imaging, reconstruction, and segmentation to determine if the internal structures are the result of burrowing. After segmentation, we visually analyzed the features and details of these structures. Overall, features such as spiraling and branching were consistent across the slab. The samples were also compared to past research on gas escape structures in which the structures were different. This difference indicates a strong case that these structures are not gas related but are biological.

INTRODUCTION.

The Ediacaran time period occurred around 600 million years ago (Mya). Due to the small amounts of oxygen, life on the sea floor was simple and mostly stationary. Behaviors such as swimming, hunting, and burrowing were too complex for the organisms at the time. Many hypotheses discuss these organisms living an anaerobic lifestyle [1]. Fossils of petalomamids have been found in the Ediacaran geological layer of earth. Typical to the time, petalomamids were organisms known to be benthic and motionless. In the Cambrian time period (540 Mya), the Cambrian explosion took place in which complex life emerged. Through the Cambrian explosion, ecological features such as the relationship between predator and prey as well as adaptations like burrowing became more prevalent. Many researchers debate why the Cambrian explosion occurred, but a popular belief is that the presence and fluctuation of oxygen and carbon created a new environment for these organisms to live. Processes like anaerobic lifestyles could be replaced with aerobic lifestyles and thus leading to more mobility [2].

Burrowing is the process of creating tunnels within the sediment for dwelling or food purposes. Burrowing is an adaptation that the geological community has only seen in the Cambrian period. It is an action that has complex motion in which an organism needs to have advanced adaptations. The act of burrowing even has complex effects on its environment due to its separation of the sediment. Because burrowing is a downward motion, it would bring new nutrients to a level of the sediment that has not been exposed. A Cambrian aquatic worm, Priapulida, is known for its presence of vertical burrowing [3]. To date, there is no evidence of vertical burrowing in the Ediacaran, however, it is thought to be possible.

Computed Tomography (CT) scanners are X-Ray machines that allow for a 3D visual of an object’s interior. Using CT scanners on rocks gives insight of what is inside without destroying the external structure of the sample. CT scans are a digital record that allow for research to continuously be done [4].

Using rock samples collected in Namibia Africa, our goal is to use 3D imaging to look for evidence of burrowing in soft sediment. The main question in this study is: Does this rock sample show us evidence of vertical movement in the late Ediacaran? The purpose of this study is to determine if there was vertical movement in the late Ediacaran as well as to compare these enigmatic structures to non-biological structures. Based off the dotted pattern and texture of the exterior of each sample, I hypothesize that these rock samples show evidence of burrowing in the late Ediacaran.

MATERIALS AND METHODS.

Geological setting and sample collection..

Limestone/sandstone samples were collected from Camp Koelkrans in Southern Namibia (Figure 1).​ Camp Koelkrans is in the Witputs Subbasin, and it preserves the Spitskop Member, Urusis Formation, Nama Group. Rock samples were collected along the base of a cliff in Camp Koelkrans which once was the sea floor of the Ediacaran. These samples were taken to the United States and studied in the laboratory at Vanderbilt University [5].

CT Scanning.

The rock samples that were previously collected were cut into smaller samples (6 individual samples). These cut rocks were secured with double sided tape onto Styrofoam blocks to maintain stability but without interfering the pictures taken. The samples were placed in the center of the CT Scanner (NSI ImagiX micro-CT instrument). The sample and stage were moved up and down to ensure the sample was as centered as possible. If a sample is not centered, it creates artifact rings that interfere with the view of the internal structures. After the sample is set, settings for each sample must be changed. Because each sample has different coloring and thickness, the light and camera settings need to be changed to ensure the best pictures. Around 800 pictures were taken per sample and each scan took around 1-2 hours [4].

Reconstruction.

Using the NSI software, each sample was reconstructed. Reconstruction is the process of assembling each individual CT photo and compiling them into one 3D model. This process helps to get a proper view of the interior of the rock structure. After the sample was reconstructed, the sample was edited for the clearest image of the details in the structurehe different types of sediment present within the rock had to be either lightened or darkened to be able to see the structures. The CT scan takes pictures of the air around the sample, so in reconstruction, the pictures of air had to be cut and removed from the sample. After a reconstruction was complete, they were studied to ensure that no ring artifacts were present. If a ring artifact occurred, the CT scan was performed again.

Segmenting.

VGSTUDIO MAX was used to isolate and segment structures within the samples. Each reconstructed picture was run through VGSTUDIO MAX. If the sample had dark spots, it was outlined and highlighted. Each new structure was given a different color to help distinguish the shape and presence of the different structures. While working with this software, each layer of the reconstructed picture was scrolled through to find and isolate all structures. Segmenting was completed for all six samples that were scanned and reconstructed.

Visual Analysis.

After scanning, reconstruction, and segmenting was completed, visual analysis was performed to observe and identify the structures. Features such as shape, direction, thickness, depth, etc. were observed and noted. These visual analyses were compared to past research to finalize the analysis.

Through visual analysis of the segmented samples, structures were found. These structures composed of unique shapes that branch out and have frequent curves. Some structures contained branching, spiraling and vertical and horizontal components. Other structures contained branching but no spiraling. A few structures contained U-shape patterns.

Image A in Figure 2 shows the structures found in piece one of the Koelkrans slab. The light blue, green and red structures represent some vertical and slightly horizonal structures. The blue structure is spiraling, branching, and showing vertical and horizontal structures.

Image B in Figure 2 shows the second piece of the slab. This piece holds thirteen structures that exemplify many different features. Throughout this slab there are many exemplar structures. The muted green and yellow structures show U-Shaped segments. The purple structure shows a spiral structure, and the blue structure demonstrates branching.

Image C in Figure 2 shows the six structures of piece six. The light blue structure is a great example of branching and horizontal and vertical features. This structure shows slight spiraling at the top, but overall does not feature spirals. The other structures in this sample are simple since they are only horizontal and not very long. Most are only horizontal, and some are not very long and therefore show simple structural features.

DISCUSSION.

A past study on an Ediacaran rock sample found vertical structures however, they were not burrow structures but rather gas escape structures [6]. Overtime as sediment is compressed,

gas gets trapped within the layers, as the gas escapes it leaves behind these structures that are not biological. These gas escape structures are therefore not trace fossils and do not show evidence of burrowing [6].

While comparing the gas escape structures to those found in the Koelkrans slab, many differences were identified. The branching and spiraling features that are present in the Koelkrans slab is significantly different than that of gas structures in that gas travels upward and not typically in spiral motions. The structural differences between the gas escape structures and the Koelkrans structures show that the Koelkrans structures are most likely biological due to their complex multi-directional shapes. The understanding of gas escape structures helps the understanding of why sediment structures can be present in the Ediacaran time period. The presence of gas escape structures thus helps to corroborate the hypotheses of stationary anerobic lifestyles. However, the presence of the complex multi-directional shapes found in the Koelkrans samples can change the understanding of life in the Ediacaran and can disprove the hypotheses made based on this time.

From the visual analysis data and segmentations that were completed, there is strong evidence that these structures could be biological. In particular, the complexity of paths in these samples show that whatever was escaping was also moving (as evidenced by L- and U-shaped structures in the block). Present day worms such as Sipunculida burrow in parallel, U-Shape, spiraling patterns [7]. When comparing their burrow patterns to the Ediacaran structures they show similar features and features particularly different than that of the gas escape structures.

A potential next step to this study would be to gather quantifiable data of the structures from the samples already collected. For example, a volumetric analysis of the internal structures identified in this study could be conducted, including measuring structure width, depth, and height. These values would then be compared with published examples of gas escape structures and biological structures from the literature. These volumes can be measured by using volume Computed Tomography [8]. These comparisons might further support the identification of biological structures in the Koelkrans slab.

Aquatic worms release mucus membranes along their burrows. Chemically testing the identified structures in the Koelkrans samples for stable isotopes could give us a better idea of what these structures are. The presence of higher-than-expected stable carbon isotopes in can be an indicator of biological matter [9].

Based on the CT Scans, digital segmenting and reconstruction, enigmatic structures were found. These structures when analyzed by shape, structure, and direction and compared to present day worm ( Sipunculida) structures, and gas escape structures found in the Ediacaran. Similar to Sipunculida the Koelkrans structures were found to be spiraling, and L and U-shaped. Because these structures are complex and multi-directional, they are shown to be different than the gas escape structures found in similar slabs. Overall, the results of this study suggest that biological features, such as worm burrows, can be identified in the Koelkrans samples from the Ediacaran.

ACKNOWLEDGMENTS.

The work was supported by the Collaborative for STEM Education and Outreach, Research Experience for High School Students (REHSS), and the Department of Earth and Environmental Science. The author would like to thank Dr. Simon A. F. Darroch and Katherine Turk for their guidance and enthusiasm for the Research as well as Dr. Nathaniel Freymeyer, Dr. Kiara Vann and Dr. Taurean Brown for their work to make REHSS possible.

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Posted by buchanle on Tuesday, April 30, 2024 in May 2024 .

Tags: Burrowing , Cambrian , CT Imaging , Ediacaran

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