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Research Paper Examples

Research paper examples are of great value for students who want to complete their assignments timely and efficiently. If you are a student in the university, your first stop in the quest for research paper examples will be the campus library where you can get to view the research sample papers of lecturers and other professionals in diverse fields plus those of fellow students who preceded you in the campus. Many college departments maintain libraries of previous student work, including large research papers, which current students can examine.

Embark on a journey of academic excellence with iResearchNet, your premier destination for research paper examples that illuminate the path to scholarly success. In the realm of academia, where the pursuit of knowledge is both a challenge and a privilege, the significance of having access to high-quality research paper examples cannot be overstated. These exemplars are not merely papers; they are beacons of insight, guiding students and scholars through the complex maze of academic writing and research methodologies.

At iResearchNet, we understand that the foundation of academic achievement lies in the quality of resources at one’s disposal. This is why we are dedicated to offering a comprehensive collection of research paper examples across a multitude of disciplines. Each example stands as a testament to rigorous research, clear writing, and the deep understanding necessary to advance in one’s academic and professional journey.

Access to superior research paper examples equips learners with the tools to develop their own ideas, arguments, and hypotheses, fostering a cycle of learning and discovery that transcends traditional boundaries. It is with this vision that iResearchNet commits to empowering students and researchers, providing them with the resources to not only meet but exceed the highest standards of academic excellence. Join us on this journey, and let iResearchNet be your guide to unlocking the full potential of your academic endeavors.

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Importance of Research Paper Examples

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A Sample Research Paper on Child Abuse

A research paper represents the pinnacle of academic investigation, a scholarly manuscript that encapsulates a detailed study, analysis, or argument based on extensive independent research. It is an embodiment of the researcher’s ability to synthesize a wealth of information, draw insightful conclusions, and contribute novel perspectives to the existing body of knowledge within a specific field. At its core, a research paper strives to push the boundaries of what is known, challenging existing theories and proposing new insights that could potentially reshape the understanding of a particular subject area.

The objective of writing a research paper is manifold, serving both educational and intellectual pursuits. Primarily, it aims to educate the author, providing a rigorous framework through which they engage deeply with a topic, hone their research and analytical skills, and learn the art of academic writing. Beyond personal growth, the research paper serves the broader academic community by contributing to the collective pool of knowledge, offering fresh perspectives, and stimulating further research. It is a medium through which scholars communicate ideas, findings, and theories, thereby fostering an ongoing dialogue that propels the advancement of science, humanities, and other fields of study.

Research papers can be categorized into various types, each with distinct objectives and methodologies. The most common types include:

• Analytical Research Paper: This type focuses on analyzing different viewpoints represented in the scholarly literature or data. The author critically evaluates and interprets the information, aiming to provide a comprehensive understanding of the topic.
• Argumentative or Persuasive Research Paper: Here, the author adopts a stance on a contentious issue and argues in favor of their position. The objective is to persuade the reader through evidence and logic that the author’s viewpoint is valid or preferable.
• Experimental Research Paper: Often used in the sciences, this type documents the process, results, and implications of an experiment conducted by the author. It provides a detailed account of the methodology, data collected, analysis performed, and conclusions drawn.
• Survey Research Paper: This involves collecting data from a set of respondents about their opinions, behaviors, or characteristics. The paper analyzes this data to draw conclusions about the population from which the sample was drawn.
• Comparative Research Paper: This type involves comparing and contrasting different theories, policies, or phenomena. The aim is to highlight similarities and differences, thereby gaining a deeper understanding of the subjects under review.
• Cause and Effect Research Paper: It explores the reasons behind specific actions, events, or conditions and the consequences that follow. The goal is to establish a causal relationship between variables.
• Review Research Paper: This paper synthesizes existing research on a particular topic, offering a comprehensive analysis of the literature to identify trends, gaps, and consensus in the field.

Understanding the nuances and objectives of these various types of research papers is crucial for scholars and students alike, as it guides their approach to conducting and writing up their research. Each type demands a unique set of skills and perspectives, pushing the author to think critically and creatively about their subject matter. As the academic landscape continues to evolve, the research paper remains a fundamental tool for disseminating knowledge, encouraging innovation, and fostering a culture of inquiry and exploration.

Browse Sample Research Papers

iResearchNet prides itself on offering a wide array of research paper examples across various disciplines, meticulously curated to support students, educators, and researchers in their academic endeavors. Each example embodies the hallmarks of scholarly excellence—rigorous research, analytical depth, and clear, precise writing. Below, we explore the diverse range of research paper examples available through iResearchNet, designed to inspire and guide users in their quest for academic achievement.

Anthropology Research Paper Examples

Our anthropology research paper examples delve into the study of humanity, exploring cultural, social, biological, and linguistic variations among human populations. These papers offer insights into human behavior, traditions, and evolution, providing a comprehensive overview of anthropological research methods and theories.

• Archaeology Research Paper
• Forensic Anthropology Research Paper
• Linguistics Research Paper
• Medical Anthropology Research Paper
• Social Problems Research Paper

Art Research Paper Examples

The art research paper examples feature analyses of artistic expressions across different cultures and historical periods. These papers cover a variety of topics, including art history, criticism, and theory, as well as the examination of specific artworks or movements.

• Performing Arts Research Paper
• Music Research Paper
• Architecture Research Paper
• Theater Research Paper
• Visual Arts Research Paper

Cancer Research Paper Examples

Our cancer research paper examples focus on the latest findings in the field of oncology, discussing the biological mechanisms of cancer, advancements in diagnostic techniques, and innovative treatment strategies. These papers aim to contribute to the ongoing battle against cancer by sharing cutting-edge research.

• Breast Cancer Research Paper
• Leukemia Research Paper
• Lung Cancer Research Paper
• Ovarian Cancer Research Paper
• Prostate Cancer Research Paper

Communication Research Paper Examples

These examples explore the complexities of human communication, covering topics such as media studies, interpersonal communication, and public relations. The papers examine how communication processes affect individuals, societies, and cultures.

• Advertising Research Paper
• Journalism Research Paper
• Media Research Paper
• Public Relations Research Paper
• Public Speaking Research Paper

Crime Research Paper Examples

The crime research paper examples provided by iResearchNet investigate various aspects of criminal behavior and the factors contributing to crime. These papers cover a range of topics, from theoretical analyses of criminality to empirical studies on crime prevention strategies.

• Computer Crime Research Paper
• Domestic Violence Research Paper
• Hate Crimes Research Paper
• Organized Crime Research Paper
• White-Collar Crime Research Paper

Criminal Justice Research Paper Examples

Our criminal justice research paper examples delve into the functioning of the criminal justice system, exploring issues related to law enforcement, the judiciary, and corrections. These papers critically examine policies, practices, and reforms within the criminal justice system.

• Capital Punishment Research Paper
• Community Policing Research Paper
• Corporal Punishment Research Paper
• Criminal Investigation Research Paper
• Criminal Justice System Research Paper
• Plea Bargaining Research Paper
• Restorative Justice Research Paper

Criminal Law Research Paper Examples

These examples focus on the legal aspects of criminal behavior, discussing laws, regulations, and case law that govern criminal proceedings. The papers provide an in-depth analysis of criminal law principles, legal defenses, and the implications of legal decisions.

• Actus Reus Research Paper
• Gun Control Research Paper
• Insanity Defense Research Paper
• International Criminal Law Research Paper
• Self-Defense Research Paper

Criminology Research Paper Examples

iResearchNet’s criminology research paper examples study the causes, prevention, and societal impacts of crime. These papers employ various theoretical frameworks to analyze crime trends and propose effective crime reduction strategies.

• Cultural Criminology Research Paper
• Education and Crime Research Paper
• Marxist Criminology Research Paper
• School Crime Research Paper
• Urban Crime Research Paper

Culture Research Paper Examples

The culture research paper examples examine the beliefs, practices, and artifacts that define different societies. These papers explore how culture shapes identities, influences behaviors, and impacts social interactions.

• Advertising and Culture Research Paper
• Material Culture Research Paper
• Popular Culture Research Paper
• Cross-Cultural Studies Research Paper
• Culture Change Research Paper

Economics Research Paper Examples

Our economics research paper examples offer insights into the functioning of economies at both the micro and macro levels. Topics include economic theory, policy analysis, and the examination of economic indicators and trends.

• Budget Research Paper
• Cost-Benefit Analysis Research Paper
• Fiscal Policy Research Paper
• Labor Market Research Paper

Education Research Paper Examples

These examples address a wide range of issues in education, from teaching methods and curriculum design to educational policy and reform. The papers aim to enhance understanding and improve outcomes in educational settings.

• Early Childhood Education Research Paper
• Information Processing Research Paper
• Multicultural Education Research Paper
• Special Education Research Paper
• Standardized Tests Research Paper

Health Research Paper Examples

The health research paper examples focus on public health issues, healthcare systems, and medical interventions. These papers contribute to the discourse on health promotion, disease prevention, and healthcare management.

• AIDS Research Paper
• Alcoholism Research Paper
• Disease Research Paper
• Health Economics Research Paper
• Health Insurance Research Paper
• Nursing Research Paper

History Research Paper Examples

Our history research paper examples cover significant events, figures, and periods, offering critical analyses of historical narratives and their impact on present-day society.

• Adolf Hitler Research Paper
• American Revolution Research Paper
• Ancient Greece Research Paper
• Apartheid Research Paper
• Christopher Columbus Research Paper
• Climate Change Research Paper
• Cold War Research Paper
• Columbian Exchange Research Paper
• Deforestation Research Paper
• Diseases Research Paper
• Earthquakes Research Paper
• Egypt Research Paper

Leadership Research Paper Examples

These examples explore the theories and practices of effective leadership, examining the qualities, behaviors, and strategies that distinguish successful leaders in various contexts.

• Implicit Leadership Theories Research Paper
• Judicial Leadership Research Paper
• Leadership Styles Research Paper
• Police Leadership Research Paper
• Political Leadership Research Paper
• Remote Leadership Research Paper

Mental Health Research Paper Examples

The mental health research paper examples provided by iResearchNet discuss psychological disorders, therapeutic interventions, and mental health advocacy. These papers aim to raise awareness and improve mental health care practices.

• ADHD Research Paper
• Anxiety Research Paper
• Autism Research Paper
• Depression Research Paper
• Eating Disorders Research Paper
• PTSD Research Paper
• Schizophrenia Research Paper
• Stress Research Paper

Political Science Research Paper Examples

Our political science research paper examples analyze political systems, behaviors, and ideologies. Topics include governance, policy analysis, and the study of political movements and institutions.

• American Government Research Paper
• Civil War Research Paper
• Communism Research Paper
• Democracy Research Paper
• Game Theory Research Paper
• Human Rights Research Paper
• International Relations Research Paper
• Terrorism Research Paper

Psychology Research Paper Examples

These examples delve into the study of the mind and behavior, covering a broad range of topics in clinical, cognitive, developmental, and social psychology.

• Artificial Intelligence Research Paper
• Assessment Psychology Research Paper
• Biological Psychology Research Paper
• Clinical Psychology Research Paper
• Cognitive Psychology Research Paper
• Developmental Psychology Research Paper
• Discrimination Research Paper
• Educational Psychology Research Paper
• Environmental Psychology Research Paper
• Experimental Psychology Research Paper
• Intelligence Research Paper
• Learning Disabilities Research Paper
• Personality Psychology Research Paper
• Psychiatry Research Paper
• Psychotherapy Research Paper
• Social Cognition Research Paper
• Social Psychology Research Paper

Sociology Research Paper Examples

The sociology research paper examples examine societal structures, relationships, and processes. These papers provide insights into social phenomena, inequality, and change.

• Family Research Paper
• Demography Research Paper
• Group Dynamics Research Paper
• Quality of Life Research Paper
• Social Change Research Paper
• Social Movements Research Paper
• Social Networks Research Paper

Technology Research Paper Examples

Our technology research paper examples address the impact of technological advancements on society, exploring issues related to digital communication, cybersecurity, and innovation.

• Computer Forensics Research Paper
• Genetic Engineering Research Paper
• History of Technology Research Paper
• Internet Research Paper
• Nanotechnology Research Paper

Other Research Paper Examples

• Abortion Research Paper
• Adoption Research Paper
• Animal Testing Research Paper
• Bullying Research Paper
• Diversity Research Paper
• Divorce Research Paper
• Drugs Research Paper
• Environmental Issues Research Paper
• Ethics Research Paper
• Evolution Research Paper
• Feminism Research Paper
• Food Research Paper
• Gender Research Paper
• Globalization Research Paper
• Juvenile Justice Research Paper
• Law Research Paper
• Management Research Paper
• Philosophy Research Paper
• Public Health Research Paper
• Religion Research Paper
• Science Research Paper
• Social Sciences Research Paper
• Statistics Research Paper
• Other Sample Research Papers

Each category of research paper examples provided by iResearchNet serves as a valuable resource for students and researchers seeking to deepen their understanding of a specific field. By offering a comprehensive collection of well-researched and thoughtfully written papers, iResearchNet aims to support academic growth and encourage scholarly inquiry across diverse disciplines.

Sample Research Papers: To Read or Not to Read?

When you get an assignment to write a research paper, the first question you ask yourself is ‘Should I look for research paper examples?’ Maybe, I can deal with this task on my own without any help. Is it that difficult?

Thousands of students turn to our service every day for help. It does not mean that they cannot do their assignments on their own. They can, but the reason is different. Writing a research paper demands so much time and energy that asking for assistance seems to be a perfect solution. As the matter of fact, it is a perfect solution, especially, when you need to work to pay for your studying as well.

Firstly, if you search for research paper examples before you start writing, you can save your time significantly. You look at the example and you understand the gist of your assignment within several minutes. Secondly, when you examine some sample paper, you get to know all the requirements. You analyze the structure, the language, and the formatting details. Finally, reading examples helps students to overcome writer’s block, as other people’s ideas can motivate you to discover your own ideas.

The significance of research paper examples in the academic journey of students cannot be overstated. These examples serve not only as a blueprint for structuring and formatting academic papers but also as a beacon guiding students through the complex landscape of academic writing standards. iResearchNet recognizes the pivotal role that high-quality research paper examples play in fostering academic success and intellectual growth among students.

Blueprint for Academic Success

Research paper examples provided by iResearchNet are meticulously crafted to demonstrate the essential elements of effective academic writing. These examples offer clear insights into how to organize a paper, from the introductory paragraph, through the development of arguments and analysis, to the concluding remarks. They showcase the appropriate use of headings, subheadings, and the integration of tables, figures, and appendices, which collectively contribute to a well-organized and coherent piece of scholarly work. By studying these examples, students can gain a comprehensive understanding of the structure and formatting required in academic papers, which is crucial for meeting the rigorous standards of academic institutions.

Sparking Ideas and Providing Evidence

Beyond serving as a structural guide, research paper examples act as a source of inspiration for students embarking on their research projects. These examples illuminate a wide array of topics, methodologies, and analytical frameworks, thereby sparking ideas for students’ own research inquiries. They demonstrate how to effectively engage with existing literature, frame research questions, and develop a compelling thesis statement. Moreover, by presenting evidence and arguments in a logical and persuasive manner, these examples illustrate the art of substantiating claims with solid research, encouraging students to adopt a similar level of rigor and depth in their work.

Enhancing Research Skills

Engagement with high-quality research paper examples is instrumental in improving research skills among students. These examples expose students to various research methodologies, from qualitative case studies to quantitative analyses, enabling them to appreciate the breadth of research approaches applicable to their fields of study. By analyzing these examples, students learn how to critically evaluate sources, differentiate between primary and secondary data, and apply ethical considerations in research. Furthermore, these papers serve as a model for effectively citing sources, thereby teaching students the importance of academic integrity and the avoidance of plagiarism.

In essence, research paper examples are a fundamental resource that can significantly enhance the academic writing and research capabilities of students. iResearchNet’s commitment to providing access to a diverse collection of exemplary papers reflects its dedication to supporting academic excellence. Through these examples, students are equipped with the tools necessary to navigate the challenges of academic writing, foster innovative thinking, and contribute meaningfully to the scholarly community. By leveraging these resources, students can elevate their academic pursuits, ensuring their research is not only rigorous but also impactful.

Custom Research Paper Writing Services

In the academic journey, the ability to craft a compelling and meticulously researched paper is invaluable. Recognizing the challenges and pressures that students face, iResearchNet has developed a suite of research paper writing services designed to alleviate the burden of academic writing and research. Our services are tailored to meet the diverse needs of students across all academic disciplines, ensuring that every research paper not only meets but exceeds the rigorous standards of scholarly excellence. Below, we detail the multifaceted aspects of our research paper writing services, illustrating how iResearchNet stands as a beacon of support in the academic landscape.

At iResearchNet, we understand the pivotal role that research papers play in the academic and professional development of students. With this understanding at our core, we offer comprehensive writing services that cater to the intricate process of research paper creation. Our services are designed to guide students through every stage of the writing process, from initial research to final submission, ensuring clarity, coherence, and scholarly rigor.

The Need for Research Paper Writing Services

Navigating the complexities of academic writing and research can be a daunting task for many students. The challenges of identifying credible sources, synthesizing information, adhering to academic standards, and articulating arguments cohesively are significant. Furthermore, the pressures of tight deadlines and the high stakes of academic success can exacerbate the difficulties faced by students. iResearchNet’s research paper writing services are crafted to address these challenges head-on, providing expert assistance that empowers students to achieve their academic goals with confidence.

Why Choose iResearchNet

Selecting the right partner for research paper writing is a pivotal decision for students and researchers aiming for academic excellence. iResearchNet stands out as the premier choice for several compelling reasons, each designed to meet the diverse needs of our clientele and ensure their success.

• Expert Writers : At iResearchNet, we pride ourselves on our team of expert writers who are not only masters in their respective fields but also possess a profound understanding of academic writing standards. With advanced degrees and extensive experience, our writers bring depth, insight, and precision to each paper, ensuring that your work is informed by the latest research and methodologies.
• Top Quality : Quality is the cornerstone of our services. We adhere to rigorous quality control processes to ensure that every paper we deliver meets the highest standards of academic excellence. Our commitment to quality means thorough research, impeccable writing, and meticulous proofreading, resulting in work that not only meets but exceeds expectations.
• Customized Solutions : Understanding that each research project has its unique challenges and requirements, iResearchNet offers customized solutions tailored to your specific needs. Whether you’re grappling with a complex research topic, a tight deadline, or specific formatting guidelines, our team is equipped to provide personalized support that aligns with your objectives.
• Affordable Prices : We believe that access to high-quality research paper writing services should not be prohibitive. iResearchNet offers competitive pricing structures designed to provide value without compromising on quality. Our transparent pricing model ensures that you know exactly what you are paying for, with no hidden costs or surprises.
• Timely Delivery : Meeting deadlines is critical in academic writing, and at iResearchNet, we take this seriously. Our efficient processes and dedicated team ensure that your paper is delivered on time, every time, allowing you to meet your academic deadlines with confidence.
• 24/7 Support : Our commitment to your success is reflected in our round-the-clock support. Whether you have a question about your order, need to communicate with your writer, or require assistance with any aspect of our service, our friendly and knowledgeable support team is available 24/7 to assist you.
• Money-Back Guarantee : Your satisfaction is our top priority. iResearchNet offers a money-back guarantee, ensuring that if for any reason you are not satisfied with the work delivered, you are entitled to a refund. This policy underscores our confidence in the quality of our services and our dedication to your success.

Choosing iResearchNet for your research paper writing needs means partnering with a trusted provider committed to excellence, innovation, and customer satisfaction. Our unparalleled blend of expert writers, top-quality work, customized solutions, affordability, timely delivery, 24/7 support, and a money-back guarantee makes us the ideal choice for students and researchers seeking to elevate their academic performance.

How It Works: iResearchNet’s Streamlined Process

Navigating the process of obtaining a top-notch research paper has never been more straightforward, thanks to iResearchNet’s streamlined approach. Our user-friendly system ensures that from the moment you decide to place your order to the final receipt of your custom-written paper, every step is seamless, transparent, and tailored to your needs. Here’s how our comprehensive process works:

• Place Your Order : Begin your journey to academic success by visiting our website and filling out the order form. Here, you’ll provide details about your research paper, including the topic, academic level, number of pages, formatting style, and any specific instructions or requirements. This initial step is crucial for us to understand your needs fully and match you with the most suitable writer.
• Make Payment : Once your order details are confirmed, you’ll proceed to the payment section. Our platform offers a variety of secure payment options, ensuring that your transaction is safe and hassle-free. Our transparent pricing policy means you’ll know exactly what you’re paying for upfront, with no hidden fees.
• Choose Your Writer : After payment, you’ll have the opportunity to choose a writer from our team of experts. Our writers are categorized based on their fields of expertise, academic qualifications, and customer feedback ratings. This step empowers you to select the writer who best matches your research paper’s requirements, ensuring a personalized and targeted approach to your project.
• Receive Your Work : Our writer will commence work on your research paper, adhering to the specified guidelines and timelines. Throughout this process, you’ll have the ability to communicate directly with your writer, allowing for updates, revisions, and clarifications to ensure the final product meets your expectations. Once completed, your research paper will undergo a thorough quality check before being delivered to you via your chosen method.
• Free Revisions : Your satisfaction is our priority. Upon receiving your research paper, you’ll have the opportunity to review the work and request any necessary revisions. iResearchNet offers free revisions within a specified period, ensuring that your final paper perfectly aligns with your academic requirements and expectations.

Our process is designed to provide you with a stress-free experience and a research paper that reflects your academic goals. From placing your order to enjoying the success of a well-written paper, iResearchNet is here to support you every step of the way.

Our Extras: Enhancing Your iResearchNet Experience

At iResearchNet, we are committed to offering more than just standard research paper writing services. We understand the importance of providing a comprehensive and personalized experience for each of our clients. That’s why we offer a range of additional services designed to enhance your experience and ensure your academic success. Here are the exclusive extras you can benefit from:

• VIP Service : Elevate your iResearchNet experience with our VIP service, offering you priority treatment from the moment you place your order. This service ensures your projects are given first priority, with immediate attention from our team, and direct access to our top-tier writers and editors. VIP clients also benefit from our highest level of customer support, available to address any inquiries or needs with utmost urgency and personalized care.
• Plagiarism Report : Integrity and originality are paramount in academic writing. To provide you with peace of mind, we offer a detailed plagiarism report with every research paper. This report is generated using advanced plagiarism detection software, ensuring that your work is unique and adheres to the highest standards of academic honesty.
• Text Messages : Stay informed about your order’s progress with real-time updates sent directly to your phone. This service ensures you’re always in the loop, providing immediate notifications about key milestones, writer assignments, and any changes to your order status. With this added layer of communication, you can relax knowing that you’ll never miss an important update about your research paper.
• Table of Contents : A well-organized research paper is key to guiding readers through your work. Our service includes the creation of a detailed table of contents, meticulously structured to reflect the main sections and subsections of your paper. This not only enhances the navigability of your document but also presents your research in a professional and academically appropriate format.
• Abstract Page : The abstract page is your research paper’s first impression, summarizing the essential points of your study and its conclusions. Crafting a compelling abstract is an art, and our experts are skilled in highlighting the significance, methodology, results, and implications of your research succinctly and effectively. This service ensures that your paper makes a strong impact from the very beginning.
• Editor’s Check : Before your research paper reaches you, it undergoes a final review by our team of experienced editors. This editor’s check is a comprehensive process that includes proofreading for grammar, punctuation, and spelling errors, as well as ensuring that the paper meets all your specifications and academic standards. This meticulous attention to detail guarantees that your paper is polished, professional, and ready for submission.

To ensure your research paper is of the highest quality and ready for submission, it undergoes a rigorous editor’s check. This final review process includes a thorough examination for any grammatical, punctuation, or spelling errors, as well as a verification that the paper meets all your specified requirements and academic standards. Our editors’ meticulous approach guarantees that your paper is polished, accurate, and exemplary.

By choosing iResearchNet and leveraging our extras, you can elevate the quality of your research paper and enjoy a customized, worry-free academic support experience.

A research paper is an academic piece of writing, so you need to follow all the requirements and standards. Otherwise, it will be impossible to get the high results. To make it easier for you, we have analyzed the structure and peculiarities of a sample research paper on the topic ‘Child Abuse’.

The paper includes 7300+ words, a detailed outline, citations are in APA formatting style, and bibliography with 28 sources.

To write any paper you need to write a great outline. This is the key to a perfect paper. When you organize your paper, it is easier for you to present the ideas logically, without jumping from one thought to another.

In the outline, you need to name all the parts of your paper. That is to say, an introduction, main body, conclusion, bibliography, some papers require abstract and proposal as well.

A good outline will serve as a guide through your paper making it easier for the reader to follow your ideas.

I. Introduction

Ii. estimates of child abuse: methodological limitations, iii. child abuse and neglect: the legalities, iv. corporal punishment versus child abuse, v. child abuse victims: the patterns, vi. child abuse perpetrators: the patterns, vii. explanations for child abuse, viii. consequences of child abuse and neglect, ix. determining abuse: how to tell whether a child is abused or neglected, x. determining abuse: interviewing children, xi. how can society help abused children and abusive families, introduction.

An introduction should include a thesis statement and the main points that you will discuss in the paper.

A thesis statement is one sentence in which you need to show your point of view. You will then develop this point of view through the whole piece of work:

‘The impact of child abuse affects more than one’s childhood, as the psychological and physical injuries often extend well into adulthood.’

Child abuse is a very real and prominent social problem today. The impact of child abuse affects more than one’s childhood, as the psychological and physical injuries often extend well into adulthood. Most children are defenseless against abuse, are dependent on their caretakers, and are unable to protect themselves from these acts.

Childhood serves as the basis for growth, development, and socialization. Throughout adolescence, children are taught how to become productive and positive, functioning members of society. Much of the socializing of children, particularly in their very earliest years, comes at the hands of family members. Unfortunately, the messages conveyed to and the actions against children by their families are not always the positive building blocks for which one would hope.

In 2008, the Children’s Defense Fund reported that each day in America, 2,421 children are confirmed as abused or neglected, 4 children are killed by abuse or neglect, and 78 babies die before their first birthday. These daily estimates translate into tremendous national figures. In 2006, caseworkers substantiated an estimated 905,000 reports of child abuse or neglect. Of these, 64% suffered neglect, 16% were physically abused, 9% were sexually abused, 7% were emotionally or psychologically maltreated, and 2% were medically neglected. In addition, 15% of the victims experienced “other” types of maltreatment such as abandonment, threats of harm to the child, and congenital drug addiction (National Child Abuse and Neglect Data System, 2006). Obviously, this problem is a substantial one.

In the main body, you dwell upon the topic of your paper. You provide your ideas and support them with evidence. The evidence include all the data and material you have found, analyzed and systematized. You can support your point of view with different statistical data, with surveys, and the results of different experiments. Your task is to show that your idea is right, and make the reader interested in the topic.

In this example, a writer analyzes the issue of child abuse: different statistical data, controversies regarding the topic, examples of the problem and the consequences.

Several issues arise when considering the amount of child abuse that occurs annually in the United States. Child abuse is very hard to estimate because much (or most) of it is not reported. Children who are abused are unlikely to report their victimization because they may not know any better, they still love their abusers and do not want to see them taken away (or do not themselves want to be taken away from their abusers), they have been threatened into not reporting, or they do not know to whom they should report their victimizations. Still further, children may report their abuse only to find the person to whom they report does not believe them or take any action on their behalf. Continuing to muddy the waters, child abuse can be disguised as legitimate injury, particularly because young children are often somewhat uncoordinated and are still learning to accomplish physical tasks, may not know their physical limitations, and are often legitimately injured during regular play. In the end, children rarely report child abuse; most often it is an adult who makes a report based on suspicion (e.g., teacher, counselor, doctor, etc.).

Even when child abuse is reported, social service agents and investigators may not follow up or substantiate reports for a variety of reasons. Parents can pretend, lie, or cover up injuries or stories of how injuries occurred when social service agents come to investigate. Further, there is not always agreement about what should be counted as abuse by service providers and researchers. In addition, social service agencies/agents have huge caseloads and may only be able to deal with the most serious forms of child abuse, leaving the more “minor” forms of abuse unsupervised and unmanaged (and uncounted in the statistical totals).

While most laws about child abuse and neglect fall at the state levels, federal legislation provides a foundation for states by identifying a minimum set of acts and behaviors that define child abuse and neglect. The Federal Child Abuse Prevention and Treatment Act (CAPTA), which stems from the Keeping Children and Families Safe Act of 2003, defines child abuse and neglect as, at minimum, “(1) any recent act or failure to act on the part of a parent or caretaker which results in death, serious physical or emotional harm, sexual abuse, or exploitation; or (2) an act or failure to act which presents an imminent risk or serious harm.”

Using these minimum standards, each state is responsible for providing its own definition of maltreatment within civil and criminal statutes. When defining types of child abuse, many states incorporate similar elements and definitions into their legal statutes. For example, neglect is often defined as failure to provide for a child’s basic needs. Neglect can encompass physical elements (e.g., failure to provide necessary food or shelter, or lack of appropriate supervision), medical elements (e.g., failure to provide necessary medical or mental health treatment), educational elements (e.g., failure to educate a child or attend to special educational needs), and emotional elements (e.g., inattention to a child’s emotional needs, failure to provide psychological care, or permitting the child to use alcohol or other drugs). Failure to meet needs does not always mean a child is neglected, as situations such as poverty, cultural values, and community standards can influence the application of legal statutes. In addition, several states distinguish between failure to provide based on financial inability and failure to provide for no apparent financial reason.

Statutes on physical abuse typically include elements of physical injury (ranging from minor bruises to severe fractures or death) as a result of punching, beating, kicking, biting, shaking, throwing, stabbing, choking, hitting (with a hand, stick, strap, or other object), burning, or otherwise harming a child. Such injury is considered abuse regardless of the intention of the caretaker. In addition, many state statutes include allowing or encouraging another person to physically harm a child (such as noted above) as another form of physical abuse in and of itself. Sexual abuse usually includes activities by a parent or caretaker such as fondling a child’s genitals, penetration, incest, rape, sodomy, indecent exposure, and exploitation through prostitution or the production of pornographic materials.

Finally, emotional or psychological abuse typically is defined as a pattern of behavior that impairs a child’s emotional development or sense of self-worth. This may include constant criticism, threats, or rejection, as well as withholding love, support, or guidance. Emotional abuse is often the most difficult to prove and, therefore, child protective services may not be able to intervene without evidence of harm to the child. Some states suggest that harm may be evidenced by an observable or substantial change in behavior, emotional response, or cognition, or by anxiety, depression, withdrawal, or aggressive behavior. At a practical level, emotional abuse is almost always present when other types of abuse are identified.

Some states include an element of substance abuse in their statutes on child abuse. Circumstances that can be considered substance abuse include (a) the manufacture of a controlled substance in the presence of a child or on the premises occupied by a child (Colorado, Indiana, Iowa, Montana, South Dakota, Tennessee, and Virginia); (b) allowing a child to be present where the chemicals or equipment for the manufacture of controlled substances are used (Arizona, New Mexico); (c) selling, distributing, or giving drugs or alcohol to a child (Florida, Hawaii, Illinois, Minnesota, and Texas); (d) use of a controlled substance by a caregiver that impairs the caregiver’s ability to adequately care for the child (Kentucky, New York, Rhode Island, and Texas); and (e) exposure of the child to drug paraphernalia (North Dakota), the criminal sale or distribution of drugs (Montana, Virginia), or drug-related activity (District of Columbia).

One of the most difficult issues with which the U.S. legal system must contend is that of allowing parents the right to use corporal punishment when disciplining a child, while not letting them cross over the line into the realm of child abuse. Some parents may abuse their children under the guise of discipline, and many instances of child abuse arise from angry parents who go too far when disciplining their children with physical punishment. Generally, state statutes use terms such as “reasonable discipline of a minor,” “causes only temporary, short-term pain,” and may cause “the potential for bruising” but not “permanent damage, disability, disfigurement or injury” to the child as ways of indicating the types of discipline behaviors that are legal. However, corporal punishment that is “excessive,” “malicious,” “endangers the bodily safety of,” or is “an intentional infliction of injury” is not allowed under most state statutes (e.g., state of Florida child abuse statute).

Most research finds that the use of physical punishment (most often spanking) is not an effective method of discipline. The literature on this issue tends to find that spanking stops misbehavior, but no more effectively than other firm measures. Further, it seems to hinder rather than improve general compliance/obedience (particularly when the child is not in the presence of the punisher). Researchers have also explained why physical punishment is not any more effective at gaining child compliance than nonviolent forms of discipline. Some of the problems that arise when parents use spanking or other forms of physical punishment include the fact that spanking does not teach what children should do, nor does it provide them with alternative behavior options should the circumstance arise again. Spanking also undermines reasoning, explanation, or other forms of parental instruction because children cannot learn, reason, or problem solve well while experiencing threat, pain, fear, or anger. Further, the use of physical punishment is inconsistent with nonviolent principles, or parental modeling. In addition, the use of spanking chips away at the bonds of affection between parents and children, and tends to induce resentment and fear. Finally, it hinders the development of empathy and compassion in children, and they do not learn to take responsibility for their own behavior (Pitzer, 1997).

One of the biggest problems with the use of corporal punishment is that it can escalate into much more severe forms of violence. Usually, parents spank because they are angry (and somewhat out of control) and they can’t think of other ways to discipline. When parents are acting as a result of emotional triggers, the notion of discipline is lost while punishment and pain become the foci.

In 2006, of the children who were found to be victims of child abuse, nearly 75% of them were first-time victims (or had not come to the attention of authorities prior). A slight majority of child abuse victims were girls—51.5%, compared to 48% of abuse victims being boys. The younger the child, the more at risk he or she is for child abuse and neglect victimization. Specifically, the rate for infants (birth to 1 year old) was approximately 24 per 1,000 children of the same age group. The victimization rate for children 1–3 years old was 14 per 1,000 children of the same age group. The abuse rate for children aged 4– 7 years old declined further to 13 per 1,000 children of the same age group. African American, American Indian, and Alaska Native children, as well as children of multiple races, had the highest rates of victimization. White and Latino children had lower rates, and Asian children had the lowest rates of child abuse and neglect victimization. Regarding living arrangements, nearly 27% of victims were living with a single mother, 20% were living with married parents, while 22% were living with both parents but the marital status was unknown. (This reporting element had nearly 40% missing data, however.) Regarding disability, nearly 8% of child abuse victims had some degree of mental retardation, emotional disturbance, visual or hearing impairment, learning disability, physical disability, behavioral problems, or other medical problems. Unfortunately, data indicate that for many victims, the efforts of the child protection services system were not successful in preventing subsequent victimization. Children who had been prior victims of maltreatment were 96% more likely to experience another occurrence than those who were not prior victims. Further, child victims who were reported to have a disability were 52% more likely to experience recurrence than children without a disability. Finally, the oldest victims (16–21 years of age) were the least likely to experience a recurrence, and were 51% less likely to be victimized again than were infants (younger than age 1) (National Child Abuse and Neglect Data System, 2006).

Child fatalities are the most tragic consequence of maltreatment. Yet, each year, children die from abuse and neglect. In 2006, an estimated 1,530 children in the United States died due to abuse or neglect. The overall rate of child fatalities was 2 deaths per 100,000 children. More than 40% of child fatalities were attributed to neglect, but physical abuse also was a major contributor. Approximately 78% of the children who died due to child abuse and neglect were younger than 4 years old, and infant boys (younger than 1) had the highest rate of fatalities at 18.5 deaths per 100,000 boys of the same age in the national population. Infant girls had a rate of 14.7 deaths per 100,000 girls of the same age (National Child Abuse and Neglect Data System, 2006).

One question to be addressed regarding child fatalities is why infants have such a high rate of death when compared to toddlers and adolescents. Children under 1 year old pose an immense amount of responsibility for their caretakers: they are completely dependent and need constant attention. Children this age are needy, impulsive, and not amenable to verbal control or effective communication. This can easily overwhelm vulnerable parents. Another difficulty associated with infants is that they are physically weak and small. Injuries to infants can be fatal, while similar injuries to older children might not be. The most common cause of death in children less than 1 year is cerebral trauma (often the result of shaken-baby syndrome). Exasperated parents can deliver shakes or blows without realizing how little it takes to cause irreparable or fatal damage to an infant. Research informs us that two of the most common triggers for fatal child abuse are crying that will not cease and toileting accidents. Both of these circumstances are common in infants and toddlers whose only means of communication often is crying, and who are limited in mobility and cannot use the toilet. Finally, very young children cannot assist in injury diagnoses. Children who have been injured due to abuse or neglect often cannot communicate to medical professionals about where it hurts, how it hurts, and so forth. Also, nonfatal injuries can turn fatal in the absence of care by neglectful parents or parents who do not want medical professionals to possibly identify an injury as being the result of abuse.

Estimates reveal that nearly 80% of perpetrators of child abuse were parents of the victim. Other relatives accounted for nearly 7%, and unmarried partners of parents made up 4% of perpetrators. Of those perpetrators that were parents, over 90% were biological parents, 4% were stepparents, and 0.7% were adoptive parents. Of this group, approximately 58% of perpetrators were women and 42% were men. Women perpetrators are typically younger than men. The average age for women abusers was 31 years old, while for men the average was 34 years old. Forty percent of women who abused were younger than 30 years of age, compared with 33% of men being under 30. The racial distribution of perpetrators is similar to that of victims. Fifty-four percent were white, 21% were African American, and 20% were Hispanic/Latino (National Child Abuse and Neglect Data System, 2006).

There are many factors that are associated with child abuse. Some of the more common/well-accepted explanations are individual pathology, parent–child interaction, past abuse in the family (or social learning), situational factors, and cultural support for physical punishment along with a lack of cultural support for helping parents here in the United States.

The first explanation centers on the individual pathology of a parent or caretaker who is abusive. This theory focuses on the idea that people who abuse their children have something wrong with their individual personality or biological makeup. Such psychological pathologies may include having anger control problems; being depressed or having post-partum depression; having a low tolerance for frustration (e.g., children can be extremely frustrating: they don’t always listen; they constantly push the line of how far they can go; and once the line has been established, they are constantly treading on it to make sure it hasn’t moved. They are dependent and self-centered, so caretakers have very little privacy or time to themselves); being rigid (e.g., having no tolerance for differences—for example, what if your son wanted to play with dolls? A rigid father would not let him, laugh at him for wanting to, punish him when he does, etc.); having deficits in empathy (parents who cannot put themselves in the shoes of their children cannot fully understand what their children need emotionally); or being disorganized, inefficient, and ineffectual. (Parents who are unable to manage their own lives are unlikely to be successful at managing the lives of their children, and since many children want and need limits, these parents are unable to set them or adhere to them.)

Biological pathologies that may increase the likelihood of someone becoming a child abuser include having substance abuse or dependence problems, or having persistent or reoccurring physical health problems (especially health problems that can be extremely painful and can cause a person to become more self-absorbed, both qualities that can give rise to a lack of patience, lower frustration tolerance, and increased stress).

The second explanation for child abuse centers on the interaction between the parent and the child, noting that certain types of parents are more likely to abuse, and certain types of children are more likely to be abused, and when these less-skilled parents are coupled with these more difficult children, child abuse is the most likely to occur. Discussion here focuses on what makes a parent less skilled, and what makes a child more difficult. Characteristics of unskilled parents are likely to include such traits as only pointing out what children do wrong and never giving any encouragement for good behavior, and failing to be sensitive to the emotional needs of children. Less skilled parents tend to have unrealistic expectations of children. They may engage in role reversal— where the parents make the child take care of them—and view the parent’s happiness and well-being as the responsibility of the child. Some parents view the parental role as extremely stressful and experience little enjoyment from being a parent. Finally, less-skilled parents tend to have more negative perceptions regarding their child(ren). For example, perhaps the child has a different shade of skin than they expected and this may disappoint or anger them, they may feel the child is being manipulative (long before children have this capability), or they may view the child as the scapegoat for all the parents’ or family’s problems. Theoretically, parents with these characteristics would be more likely to abuse their children, but if they are coupled with having a difficult child, they would be especially likely to be abusive. So, what makes a child more difficult? Certainly, through no fault of their own, children may have characteristics that are associated with child care that is more demanding and difficult than in the “normal” or “average” situation. Such characteristics can include having physical and mental disabilities (autism, attention deficit hyperactivity disorder [ADHD], hyperactivity, etc.); the child may be colicky, frequently sick, be particularly needy, or cry more often. In addition, some babies are simply unhappier than other babies for reasons that cannot be known. Further, infants are difficult even in the best of circumstances. They are unable to communicate effectively, and they are completely dependent on their caretakers for everything, including eating, diaper changing, moving around, entertainment, and emotional bonding. Again, these types of children, being more difficult, are more likely to be victims of child abuse.

Nonetheless, each of these types of parents and children alone cannot explain the abuse of children, but it is the interaction between them that becomes the key. Unskilled parents may produce children that are happy and not as needy, and even though they are unskilled, they do not abuse because the child takes less effort. At the same time, children who are more difficult may have parents who are skilled and are able to handle and manage the extra effort these children take with aplomb. However, risks for child abuse increase when unskilled parents must contend with difficult children.

Social learning or past abuse in the family is a third common explanation for child abuse. Here, the theory concentrates not only on what children learn when they see or experience violence in their homes, but additionally on what they do not learn as a result of these experiences. Social learning theory in the context of family violence stresses that if children are abused or see abuse (toward siblings or a parent), those interactions and violent family members become the representations and role models for their future familial interactions. In this way, what children learn is just as important as what they do not learn. Children who witness or experience violence may learn that this is the way parents deal with children, or that violence is an acceptable method of child rearing and discipline. They may think when they become parents that “violence worked on me when I was a child, and I turned out fine.” They may learn unhealthy relationship interaction patterns; children may witness the negative interactions of parents and they may learn the maladaptive or violent methods of expressing anger, reacting to stress, or coping with conflict.

What is equally as important, though, is that they are unlikely to learn more acceptable and nonviolent ways of rearing children, interacting with family members, and working out conflict. Here it may happen that an adult who was abused as a child would like to be nonviolent toward his or her own children, but when the chips are down and the child is misbehaving, this abused-child-turned-adult does not have a repertoire of nonviolent strategies to try. This parent is more likely to fall back on what he or she knows as methods of discipline.

Something important to note here is that not all abused children grow up to become abusive adults. Children who break the cycle were often able to establish and maintain one healthy emotional relationship with someone during their childhoods (or period of young adulthood). For instance, they may have received emotional support from a nonabusing parent, or they received social support and had a positive relationship with another adult during their childhood (e.g., teacher, coach, minister, neighbor, etc.). Abused children who participate in therapy during some period of their lives can often break the cycle of violence. In addition, adults who were abused but are able to form an emotionally supportive and satisfying relationship with a mate can make the transition to being nonviolent in their family interactions.

Moving on to a fourth familiar explanation for child abuse, there are some common situational factors that influence families and parents and increase the risks for child abuse. Typically, these are factors that increase family stress or social isolation. Specifically, such factors may include receiving public assistance or having low socioeconomic status (a combination of low income and low education). Other factors include having family members who are unemployed, underemployed (working in a job that requires lower qualifications than an individual possesses), or employed only part time. These financial difficulties cause great stress for families in meeting the needs of the individual members. Other stress-inducing familial characteristics are single-parent households and larger family size. Finally, social isolation can be devastating for families and family members. Having friends to talk to, who can be relied upon, and with whom kids can be dropped off occasionally is tremendously important for personal growth and satisfaction in life. In addition, social isolation and stress can cause individuals to be quick to lose their tempers, as well as cause people to be less rational in their decision making and to make mountains out of mole hills. These situations can lead families to be at greater risk for child abuse.

Finally, cultural views and supports (or lack thereof) can lead to greater amounts of child abuse in a society such as the United States. One such cultural view is that of societal support for physical punishment. This is problematic because there are similarities between the way criminals are dealt with and the way errant children are handled. The use of capital punishment is advocated for seriously violent criminals, and people are quick to use such idioms as “spare the rod and spoil the child” when it comes to the discipline or punishment of children. In fact, it was not until quite recently that parenting books began to encourage parents to use other strategies than spanking or other forms of corporal punishment in the discipline of their children. Only recently, the American Academy of Pediatrics has come out and recommended that parents do not spank or use other forms of violence on their children because of the deleterious effects such methods have on youngsters and their bonds with their parents. Nevertheless, regardless of recommendations, the culture of corporal punishment persists.

Another cultural view in the United States that can give rise to greater incidents of child abuse is the belief that after getting married, couples of course should want and have children. Culturally, Americans consider that children are a blessing, raising kids is the most wonderful thing a person can do, and everyone should have children. Along with this notion is the idea that motherhood is always wonderful; it is the most fulfilling thing a woman can do; and the bond between a mother and her child is strong, glorious, and automatic—all women love being mothers. Thus, culturally (and theoretically), society nearly insists that married couples have children and that they will love having children. But, after children are born, there is not much support for couples who have trouble adjusting to parenthood, or who do not absolutely love their new roles as parents. People look askance at parents who need help, and cannot believe parents who say anything negative about parenthood. As such, theoretically, society has set up a situation where couples are strongly encouraged to have kids, are told they will love kids, but then society turns a blind or disdainful eye when these same parents need emotional, financial, or other forms of help or support. It is these types of cultural viewpoints that increase the risks for child abuse in society.

The consequences of child abuse are tremendous and long lasting. Research has shown that the traumatic experience of childhood abuse is life changing. These costs may surface during adolescence, or they may not become evident until abused children have grown up and become abusing parents or abused spouses. Early identification and treatment is important to minimize these potential long-term effects. Whenever children say they have been abused, it is imperative that they be taken seriously and their abuse be reported. Suspicions of child abuse must be reported as well. If there is a possibility that a child is or has been abused, an investigation must be conducted.

Children who have been abused may exhibit traits such as the inability to love or have faith in others. This often translates into adults who are unable to establish lasting and stable personal relationships. These individuals have trouble with physical closeness and touching as well as emotional intimacy and trust. Further, these qualities tend to cause a fear of entering into new relationships, as well as the sabotaging of any current ones.

Psychologically, children who have been abused tend to have poor self-images or are passive, withdrawn, or clingy. They may be angry individuals who are filled with rage, anxiety, and a variety of fears. They are often aggressive, disruptive, and depressed. Many abused children have flashbacks and nightmares about the abuse they have experienced, and this may cause sleep problems as well as drug and alcohol problems. Posttraumatic stress disorder (PTSD) and antisocial personality disorder are both typical among maltreated children. Research has also shown that most abused children fail to reach “successful psychosocial functioning,” and are thus not resilient and do not resume a “normal life” after the abuse has ended.

Socially (and likely because of these psychological injuries), abused children have trouble in school, will have difficulty getting and remaining employed, and may commit a variety of illegal or socially inappropriate behaviors. Many studies have shown that victims of child abuse are likely to participate in high-risk behaviors such as alcohol or drug abuse, the use of tobacco, and high-risk sexual behaviors (e.g., unprotected sex, large numbers of sexual partners). Later in life, abused children are more likely to have been arrested and homeless. They are also less able to defend themselves in conflict situations and guard themselves against repeated victimizations.

Medically, abused children likely will experience health problems due to the high frequency of physical injuries they receive. In addition, abused children experience a great deal of emotional turmoil and stress, which can also have a significant impact on their physical condition. These health problems are likely to continue occurring into adulthood. Some of these longer-lasting health problems include headaches; eating problems; problems with toileting; and chronic pain in the back, stomach, chest, and genital areas. Some researchers have noted that abused children may experience neurological impairment and problems with intellectual functioning, while others have found a correlation between abuse and heart, lung, and liver disease, as well as cancer (Thomas, 2004).

Victims of sexual abuse show an alarming number of disturbances as adults. Some dislike and avoid sex, or experience sexual problems or disorders, while other victims appear to enjoy sexual activities that are self-defeating or maladaptive—normally called “dysfunctional sexual behavior”—and have many sexual partners.

Abused children also experience a wide variety of developmental delays. Many do not reach physical, cognitive, or emotional developmental milestones at the typical time, and some never accomplish what they are supposed to during childhood socialization. In the next section, these developmental delays are discussed as a means of identifying children who may be abused.

There are two primary ways of identifying children who are abused: spotting and evaluating physical injuries, and detecting and appraising developmental delays. Distinguishing physical injuries due to abuse can be difficult, particularly among younger children who are likely to get hurt or receive injuries while they are playing and learning to become ambulatory. Nonetheless, there are several types of wounds that children are unlikely to give themselves during their normal course of play and exploration. These less likely injuries may signal instances of child abuse.

While it is true that children are likely to get bruises, particularly when they are learning to walk or crawl, bruises on infants are not normal. Also, the back of the legs, upper arms, or on the chest, neck, head, or genitals are also locations where bruises are unlikely to occur during normal childhood activity. Further, bruises with clean patterns, like hand prints, buckle prints, or hangers (to name a few), are good examples of the types of bruises children do not give themselves.

Another area of physical injury where the source of the injury can be difficult to detect is fractures. Again, children fall out of trees, or crash their bikes, and can break limbs. These can be normal parts of growing up. However, fractures in infants less than 12 months old are particularly suspect, as infants are unlikely to be able to accomplish the types of movement necessary to actually break a leg or an arm. Further, multiple fractures, particularly more than one on a bone, should be examined more closely. Spiral or torsion fractures (when the bone is broken by twisting) are suspect because when children break their bones due to play injuries, the fractures are usually some other type (e.g., linear, oblique, compacted). In addition, when parents don’t know about the fracture(s) or how it occurred, abuse should be considered, because when children get these types of injuries, they need comfort and attention.

Head and internal injuries are also those that may signal abuse. Serious blows to the head cause internal head injuries, and this is very different from the injuries that result from bumping into things. Abused children are also likely to experience internal injuries like those to the abdomen, liver, kidney, and bladder. They may suffer a ruptured spleen, or intestinal perforation. These types of damages rarely happen by accident.

Burns are another type of physical injury that can happen by accident or by abuse. Nevertheless, there are ways to tell these types of burn injuries apart. The types of burns that should be examined and investigated are those where the burns are in particular locations. Burns to the bottom of the feet, genitals, abdomen, or other inaccessible spots should be closely considered. Burns of the whole hand or those to the buttocks are also unlikely to happen as a result of an accident.

Turning to the detection and appraisal of developmental delays, one can more readily assess possible abuse by considering what children of various ages should be able to accomplish, than by noting when children are delayed and how many milestones on which they are behind schedule. Importantly, a few delays in reaching milestones can be expected, since children develop individually and not always according to the norm. Nonetheless, when children are abused, their development is likely to be delayed in numerous areas and across many milestones.

As children develop and grow, they should be able to crawl, walk, run, talk, control going to the bathroom, write, set priorities, plan ahead, trust others, make friends, develop a good self-image, differentiate between feeling and behavior, and get their needs met in appropriate ways. As such, when children do not accomplish these feats, their circumstances should be examined.

Infants who are abused or neglected typically develop what is termed failure to thrive syndrome. This syndrome is characterized by slow, inadequate growth, or not “filling out” physically. They have a pale, colorless complexion and dull eyes. They are not likely to spend much time looking around, and nothing catches their eyes. They may show other signs of lack of nutrition such as cuts, bruises that do not heal in a timely way, and discolored fingernails. They are also not trusting and may not cry much, as they are not expecting to have their needs met. Older infants may not have developed any language skills, or these developments are quite slow. This includes both verbal and nonverbal means of communication.

Toddlers who are abused often become hypervigilant about their environments and others’ moods. They are more outwardly focused than a typical toddler (who is quite self-centered) and may be unable to separate themselves as individuals, or consider themselves as distinct beings. In this way, abused toddlers cannot focus on tasks at hand because they are too concerned about others’ reactions. They don’t play with toys, have no interest in exploration, and seem unable to enjoy life. They are likely to accept losses with little reaction, and may have age-inappropriate knowledge of sex and sexual relations. Finally, toddlers, whether they are abused or not, begin to mirror their parents’ behaviors. Thus, toddlers who are abused may mimic the abuse when they are playing with dolls or “playing house.”

Developmental delays can also be detected among abused young adolescents. Some signs include the failure to learn cause and effect, since their parents are so inconsistent. They have no energy for learning and have not developed beyond one- or two-word commands. They probably cannot follow complicated directions (such as two to three tasks per instruction), and they are unlikely to be able to think for themselves. Typically, they have learned that failure is totally unacceptable, but they are more concerned with the teacher’s mood than with learning and listening to instruction. Finally, they are apt to have been inadequately toilet trained and thus may be unable to control their bladders.

Older adolescents, because they are likely to have been abused for a longer period of time, continue to get further and further behind in their developmental achievements. Abused children this age become family nurturers. They take care of their parents and cater to their parents’ needs, rather than the other way around. In addition, they probably take care of any younger siblings and do the household chores. Because of these default responsibilities, they usually do not participate in school activities; they frequently miss days at school; and they have few, if any, friends. Because they have become so hypervigilant and have increasingly delayed development, they lose interest in and become disillusioned with education. They develop low self-esteem and little confidence, but seem old for their years. Children this age who are abused are still likely to be unable to control their bladders and may have frequent toileting accidents.

Other developmental delays can occur and be observed in abused and neglected children of any age. For example, malnutrition and withdrawal can be noticed in infants through teenagers. Maltreated children frequently have persistent or untreated illnesses, and these can become permanent disabilities if medical conditions go untreated for a long enough time. Another example can be the consequences of neurological damage. Beyond being a medical issue, this type of damage can cause problems with social behavior and impulse control, which, again, can be discerned in various ages of children.

Once child abuse is suspected, law enforcement officers, child protection workers, or various other practitioners may need to interview the child about the abuse or neglect he or she may have suffered. Interviewing children can be extremely difficult because children at various stages of development can remember only certain parts or aspects of the events in their lives. Also, interviewers must be careful that they do not put ideas or answers into the heads of the children they are interviewing. There are several general recommendations when interviewing children about the abuse they may have experienced. First, interviewers must acknowledge that even when children are abused, they likely still love their parents. They do not want to be taken away from their parents, nor do they want to see their parents get into trouble. Interviewers must not blame the parents or be judgmental about them or the child’s family. Beyond that, interviews should take place in a safe, neutral location. Interviewers can use dolls and role-play to help children express the types of abuse of which they may be victims.

Finally, interviewers must ask age-appropriate questions. For example, 3-year-olds can probably only answer questions about what happened and who was involved. Four- to five-year-olds can also discuss where the incidents occurred. Along with what, who, and where, 6- to 8-year-olds can talk about the element of time, or when the abuse occurred. Nine- to 10-year-olds are able to add commentary about the number of times the abuse occurred. Finally, 11-year-olds and older children can additionally inform interviewers about the circumstances of abusive instances.

A conclusion is not a summary of what a writer has already mentioned. On the contrary, it is the last point made. Taking every detail of the investigation, the researcher makes the concluding point. In this part of a paper, you need to put a full stop in your research. You need to persuade the reader in your opinion.

Never add any new information in the conclusion. You can present solutions to the problem and you dwell upon the results, but only if this information has been already mentioned in the main body.

Child advocates recommend a variety of strategies to aid families and children experiencing abuse. These recommendations tend to focus on societal efforts as well as more individual efforts. One common strategy advocated is the use of public service announcements that encourage individuals to report any suspected child abuse. Currently, many mandatory reporters (those required by law to report abuse such as teachers, doctors, and social service agency employees) and members of communities feel that child abuse should not be reported unless there is substantial evidence that abuse is indeed occurring. Child advocates stress that this notion should be changed, and that people should report child abuse even if it is only suspected. Public service announcements should stress that if people report suspected child abuse, the worst that can happen is that they might be wrong, but in the grander scheme of things that is really not so bad.

Child advocates also stress that greater interagency cooperation is needed. This cooperation should be evident between women’s shelters, child protection agencies, programs for at-risk children, medical agencies, and law enforcement officers. These agencies typically do not share information, and if they did, more instances of child abuse would come to the attention of various authorities and could be investigated and managed. Along these lines, child protection agencies and programs should receive more funding. When budgets are cut, social services are often the first things to go or to get less financial support. Child advocates insist that with more resources, child protection agencies could hire more workers, handle more cases, conduct more investigations, and follow up with more children and families.

Continuing, more educational efforts must be initiated about issues such as punishment and discipline styles and strategies; having greater respect for children; as well as informing the community about what child abuse is, and how to recognize it. In addition, Americans must alter the cultural orientation about child bearing and child rearing. Couples who wish to remain child-free must be allowed to do so without disdain. And, it must be acknowledged that raising children is very difficult, is not always gloriously wonderful, and that parents who seek help should be lauded and not criticized. These kinds of efforts can help more children to be raised in nonviolent, emotionally satisfying families, and thus become better adults.

Bibliography

When you write a paper, make sure you are aware of all the formatting requirements. Incorrect formatting can lower your mark, so do not underestimate the importance of this part.

Organizing your bibliography is quite a tedious and time-consuming task. Still, you need to do it flawlessly. For this reason, analyze all the standards you need to meet or ask professionals to help you with it. All the comas, colons, brackets etc. matter. They truly do.

Bibliography:

• American Academy of Pediatrics: https://www.aap.org/
• Bancroft, L., & Silverman, J. G. (2002). The batterer as parent. Thousand Oaks, CA: Sage.
• Child Abuse Prevention and Treatment Act, 42 U.S.C.A. § 5106g (1998).
• Childhelp: Child Abuse Statistics: https://www.childhelp.org/child-abuse-statistics/
• Children’s Defense Fund: https://www.childrensdefense.org/
• Child Stats.gov: https://www.childstats.gov/
• Child Welfare League of America: https://www.cwla.org/
• Crosson-Tower, C. (2008). Understanding child abuse and neglect (7th ed.). Boston: Allyn & Bacon.
• DeBecker, G. (1999). Protecting the gift: Keeping children and teenagers safe (and parents sane). New York: Bantam Dell.
• Family Research Laboratory at the University of New Hampshire: https://cola.unh.edu/family-research-laboratory
• Guterman, N. B. (2001). Stopping child maltreatment before it starts: Emerging horizons in early home visitation services. Thousand Oaks, CA: Sage.
• Herman, J. L. (2000). Father-daughter incest. Cambridge, MA: Harvard University Press.
• Medline Plus, Child Abuse: https://medlineplus.gov/childabuse.html
• Myers, J. E. B. (Ed.). (1994). The backlash: Child protection under fire. Newbury Park, CA: Sage.
• National Center for Missing and Exploited Children: https://www.missingkids.org/home
• National Child Abuse and Neglect Data System. (2006). Child maltreatment 2006: Reports from the states to the National Child Abuse and Neglect Data System. Washington, DC: U.S. Department of Health and Human Services, Administration for Children and Families.
• New York University Silver School of Social Work: https://socialwork.nyu.edu/
• Pitzer, R. L. (1997). Corporal punishment in the discipline of children in the home: Research update for practitioners. Paper presented at the National Council on Family Relations Annual Conference, Washington, DC.
• RAND, Child Abuse and Neglect: https://www.rand.org/topics/child-abuse-and-neglect.html
• Richards, C. E. (2001). The loss of innocents: Child killers and their victims. Wilmington, DE: Scholarly Resources.
• Straus, M. A. (2001). Beating the devil out of them: Corporal punishment in American families and its effects on children. Edison, NJ: Transaction.
• Thomas, P. M. (2004). Protection, dissociation, and internal roles: Modeling and treating the effects of child abuse. Review of General Psychology, 7(15).
• U.S. Department of Health and Human Services, Administration for Children and Families: https://www.acf.hhs.gov/

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Research Paper Guide

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Crafting a comprehensive research paper can be daunting. Understanding diverse citation styles and various subject areas presents a challenge for many.

Without clear examples, students often feel lost and overwhelmed, unsure of how to start or which style fits their subject.

Explore our collection of expertly written research paper examples. We’ve covered various citation styles and a diverse range of subjects.

So, read on!

• 1. Research Paper Example for Different Formats
• 2. Examples for Different Research Paper Parts
• 3. Research Paper Examples for Different Fields
• 4. Research Paper Example Outline

Research Paper Example for Different Formats

Following a specific formatting style is essential while writing a research paper . Knowing the conventions and guidelines for each format can help you in creating a perfect paper. Here we have gathered examples of research paper for most commonly applied citation styles :

Social Media and Social Media Marketing: A Literature Review

APA Research Paper Example

APA (American Psychological Association) style is commonly used in social sciences, psychology, and education. This format is recognized for its clear and concise writing, emphasis on proper citations, and orderly presentation of ideas.

Here are some research paper examples in APA style:

Research Paper Example APA 7th Edition

Research Paper Example MLA

MLA (Modern Language Association) style is frequently employed in humanities disciplines, including literature, languages, and cultural studies. An MLA research paper might explore literature analysis, linguistic studies, or historical research within the humanities. 

Here is an example:

Found Voices: Carl Sagan

Research Paper Example Chicago

Chicago style is utilized in various fields like history, arts, and social sciences. Research papers in Chicago style could delve into historical events, artistic analyses, or social science inquiries. 

Here is a research paper formatted in Chicago style:

Chicago Research Paper Sample

Research Paper Example Harvard

Harvard style is widely used in business, management, and some social sciences. Research papers in Harvard style might address business strategies, case studies, or social policies.

View this sample Harvard style paper here:

Harvard Research Paper Sample

Examples for Different Research Paper Parts

A research paper has different parts. Each part is important for the overall success of the paper. Chapters in a research paper must be written correctly, using a certain format and structure.

The following are examples of how different sections of the research paper can be written.

Research Proposal

The research proposal acts as a detailed plan or roadmap for your study, outlining the focus of your research and its significance. It's essential as it not only guides your research but also persuades others about the value of your study.

Example of Research Proposal

An abstract serves as a concise overview of your entire research paper. It provides a quick insight into the main elements of your study. It summarizes your research's purpose, methods, findings, and conclusions in a brief format.

Research Paper Example Abstract

Literature Review 

A literature review summarizes the existing research on your study's topic, showcasing what has already been explored. This section adds credibility to your own research by analyzing and summarizing prior studies related to your topic.

Literature Review Research Paper Example

Methodology

The methodology section functions as a detailed explanation of how you conducted your research. This part covers the tools, techniques, and steps used to collect and analyze data for your study.

Methods Section of Research Paper Example

How to Write the Methods Section of a Research Paper

The conclusion summarizes your findings, their significance and the impact of your research. This section outlines the key takeaways and the broader implications of your study's results.

Research Paper Conclusion Example

Research Paper Examples for Different Fields

Research papers can be about any subject that needs a detailed study. The following examples show research papers for different subjects.

History Research Paper Sample

Preparing a history research paper involves investigating and presenting information about past events. This may include exploring perspectives, analyzing sources, and constructing a narrative that explains the significance of historical events.

View this history research paper sample:

Many Faces of Generalissimo Fransisco Franco

Sociology Research Paper Sample

In sociology research, statistics and data are harnessed to explore societal issues within a particular region or group. These findings are thoroughly analyzed to gain an understanding of the structure and dynamics present within these communities. 

Here is a sample:

A Descriptive Statistical Analysis within the State of Virginia

Science Fair Research Paper Sample

A science research paper involves explaining a scientific experiment or project. It includes outlining the purpose, procedures, observations, and results of the experiment in a clear, logical manner.

Here are some examples:

Science Fair Paper Format

What Do I Need To Do For The Science Fair?

Psychology Research Paper Sample

Writing a psychology research paper involves studying human behavior and mental processes. This process includes conducting experiments, gathering data, and analyzing results to understand the human mind, emotions, and behavior.

Here is an example psychology paper:

The Effects of Food Deprivation on Concentration and Perseverance

Art History Research Paper Sample

Studying art history includes examining artworks, understanding their historical context, and learning about the artists. This helps analyze and interpret how art has evolved over various periods and regions.

Check out this sample paper analyzing European art and impacts:

European Art History: A Primer

Research Paper Example Outline

Before you plan on writing a well-researched paper, make a rough draft. An outline can be a great help when it comes to organizing vast amounts of research material for your paper.

Here is an outline of a research paper example:

Here is a downloadable sample of a standard research paper outline:

Research Paper Outline

Want to create the perfect outline for your paper? Check out this in-depth guide on creating a research paper outline for a structured paper!

Good Research Paper Examples for Students

Here are some more samples of research paper for students to learn from:

Fiscal Research Center - Action Plan

Qualitative Research Paper Example

Research Paper Example Introduction

How to Write a Research Paper Example

Research Paper Example for High School

Now that you have explored the research paper examples, you can start working on your research project. Hopefully, these examples will help you understand the writing process for a research paper.

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APA Sample Paper

Welcome to the Purdue OWL

This page is brought to you by the OWL at Purdue University. When printing this page, you must include the entire legal notice.

Copyright ©1995-2018 by The Writing Lab & The OWL at Purdue and Purdue University. All rights reserved. This material may not be published, reproduced, broadcast, rewritten, or redistributed without permission. Use of this site constitutes acceptance of our terms and conditions of fair use.

Note:  This page reflects the latest version of the APA Publication Manual (i.e., APA 7), which released in October 2019. The equivalent resource for the older APA 6 style  can be found here .

Media Files: APA Sample Student Paper  ,  APA Sample Professional Paper

This resource is enhanced by Acrobat PDF files. Download the free Acrobat Reader

Note: The APA Publication Manual, 7 th Edition specifies different formatting conventions for student  and  professional  papers (i.e., papers written for credit in a course and papers intended for scholarly publication). These differences mostly extend to the title page and running head. Crucially, citation practices do not differ between the two styles of paper.

However, for your convenience, we have provided two versions of our APA 7 sample paper below: one in  student style and one in  professional  style.

Note: For accessibility purposes, we have used "Track Changes" to make comments along the margins of these samples. Those authored by [AF] denote explanations of formatting and [AWC] denote directions for writing and citing in APA 7. 

APA 7 Student Paper:

Apa 7 professional paper:.

What’s Included: Research Paper Template

If you’re preparing to write an academic research paper, our free research paper template is the perfect starting point. In the template, we cover every section step by step, with clear, straightforward explanations and examples .

The template’s structure is based on the tried and trusted best-practice format for formal academic research papers. The template structure reflects the overall research process, ensuring your paper will have a smooth, logical flow from chapter to chapter.

The research paper template covers the following core sections:

• The title page/cover page
• Abstract (sometimes also called the executive summary)
• Section 1: Introduction 
• Section 2: Literature review 
• Section 3: Methodology
• Section 4: Findings /results
• Section 5: Discussion
• Section 6: Conclusion
• Reference list

Each section is explained in plain, straightforward language , followed by an overview of the key elements that you need to cover within each section. We’ve also included links to free resources to help you understand how to write each section.

The cleanly formatted Google Doc can be downloaded as a fully editable MS Word Document (DOCX format), so you can use it as-is or convert it to LaTeX.

FAQs: Research Paper Template

What format is the template (doc, pdf, ppt, etc.).

The research paper template is provided as a Google Doc. You can download it in MS Word format or make a copy to your Google Drive. You’re also welcome to convert it to whatever format works best for you, such as LaTeX or PDF.

What types of research papers can this template be used for?

The template follows the standard best-practice structure for formal academic research papers, so it is suitable for the vast majority of degrees, particularly those within the sciences.

Some universities may have some additional requirements, but these are typically minor, with the core structure remaining the same. Therefore, it’s always a good idea to double-check your university’s requirements before you finalise your structure.

Is this template for an undergrad, Masters or PhD-level research paper?

This template can be used for a research paper at any level of study. It may be slight overkill for an undergraduate-level study, but it certainly won’t be missing anything.

How long should my research paper be?

This depends entirely on your university’s specific requirements, so it’s best to check with them. We include generic word count ranges for each section within the template, but these are purely indicative. 

What about the research proposal?

If you’re still working on your research proposal, we’ve got a template for that here .

We’ve also got loads of proposal-related guides and videos over on the Grad Coach blog .

How do I write a literature review?

We have a wealth of free resources on the Grad Coach Blog that unpack how to write a literature review from scratch. You can check out the literature review section of the blog here.

How do I create a research methodology?

We have a wealth of free resources on the Grad Coach Blog that unpack research methodology, both qualitative and quantitative. You can check out the methodology section of the blog here.

Can I share this research paper template with my friends/colleagues?

Yes, you’re welcome to share this template. If you want to post about it on your blog or social media, all we ask is that you reference this page as your source.

Can Grad Coach help me with my research paper?

Within the template, you’ll find plain-language explanations of each section, which should give you a fair amount of guidance. However, you’re also welcome to consider our private coaching services .

How To Write A Research Paper

Research Paper Example

Research Paper Example - Examples for Different Formats

Published on: Jun 12, 2021

Last updated on: Feb 6, 2024

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Writing a research paper is the most challenging task in a student's academic life. researchers face similar writing process hardships, whether the research paper is to be written for graduate or masters.

A research paper is a writing type in which a detailed analysis, interpretation, and evaluation are made on the topic. It requires not only time but also effort and skills to be drafted correctly.

If you are working on your research paper for the first time, here is a collection of examples that you will need to understand the paper’s format and how its different parts are drafted. Continue reading the article to get free research paper examples.

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Research Paper Example for Different Formats

A research paper typically consists of several key parts, including an introduction, literature review, methodology, results, and annotated bibliography .

When writing a research paper (whether quantitative research or qualitative research ), it is essential to know which format to use to structure your content. Depending on the requirements of the institution, there are mainly four format styles in which a writer drafts a research paper:

Let’s look into each format in detail to understand the fundamental differences and similarities.

Research Paper Example APA

If your instructor asks you to provide a research paper in an APA format, go through the example given below and understand the basic structure. Make sure to follow the format throughout the paper.

APA Research Paper Sample (PDF)

Research Paper Example MLA

Another widespread research paper format is MLA. A few institutes require this format style as well for your research paper. Look at the example provided of this format style to learn the basics.

MLA Research Paper Sample (PDF)

Research Paper Example Chicago

Unlike MLA and APA styles, Chicago is not very common. Very few institutions require this formatting style research paper, but it is essential to learn it. Look at the example given below to understand the formatting of the content and citations in the research paper.

Chicago Research Paper Sample (PDF)

Research Paper Example Harvard

Learn how a research paper through Harvard formatting style is written through this example. Carefully examine how the cover page and other pages are structured.

Harvard Research Paper Sample (PDF)

Examples for Different Research Paper Parts

A research paper is based on different parts. Each part plays a significant role in the overall success of the paper. So each chapter of the paper must be drafted correctly according to a format and structure.

Below are examples of how different sections of the research paper are drafted.

Research Proposal Example

A research proposal is a plan that describes what you will investigate, its significance, and how you will conduct the study.

Research Proposal Sample (PDF)

Abstract Research Paper Example

An abstract is an executive summary of the research paper that includes the purpose of the research, the design of the study, and significant research findings.

It is a small section that is based on a few paragraphs. Following is an example of the abstract to help you draft yours professionally.

Abstract Research Paper Sample (PDF)

Literature Review Research Paper Example

A literature review in a research paper is a comprehensive summary of the previous research on your topic. It studies sources like books, articles, journals, and papers on the relevant research problem to form the basis of the new research.

Writing this section of the research paper perfectly is as important as any part of it.

Literature Review in Research Sample (PDF)

Methods Section of Research Paper Example

The method section comes after the introduction of the research paper that presents the process of collecting data. Basically, in this section, a researcher presents the details of how your research was conducted.

Methods Section in Research Sample (PDF)

Research Paper Conclusion Example

The conclusion is the last part of your research paper that sums up the writer’s discussion for the audience and leaves an impression. This is how it should be drafted:

Research Paper Conclusion Sample (PDF)

Research Paper Examples for Different Fields

The research papers are not limited to a particular field. They can be written for any discipline or subject that needs a detailed study.

In the following section, various research paper examples are given to show how they are drafted for different subjects.

Science Research Paper Example

Are you a science student that has to conduct research? Here is an example for you to draft a compelling research paper for the field of science.

Science Research Paper Sample (PDF)

History Research Paper Example

Conducting research and drafting a paper is not only bound to science subjects. Other subjects like history and arts require a research paper to be written as well. Observe how research papers related to history are drafted.

History Research Paper Sample (PDF)

Psychology Research Paper Example

If you are a psychology student, look into the example provided in the research paper to help you draft yours professionally.

Psychology Research Paper Sample (PDF)

Research Paper Example for Different Levels

Writing a research paper is based on a list of elements. If the writer is not aware of the basic elements, the process of writing the paper will become daunting. Start writing your research paper taking the following steps:

• Choose a topic
• Form a strong thesis statement
• Conduct research
• Develop a research paper outline

Once you have a plan in your hand, the actual writing procedure will become a piece of cake for you.

No matter which level you are writing a research paper for, it has to be well structured and written to guarantee you better grades.

If you are a college or a high school student, the examples in the following section will be of great help.

Research Paper Outline (PDF)

Research Paper Example for College

Pay attention to the research paper example provided below. If you are a college student, this sample will help you understand how a winning paper is written.

College Research Paper Sample (PDF)

Research Paper Example for High School

Expert writers of CollegeEssay.org have provided an excellent example of a research paper for high school students. If you are struggling to draft an exceptional paper, go through the example provided.

High School Research Paper Sample (PDF)

Examples are essential when it comes to academic assignments. If you are a student and aim to achieve good grades in your assignments, it is suggested to get help from  CollegeEssay.org .

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How to Write a Research Paper in APA Format — A Complete Guide

Completed your research experiments and collated your results? Does it feel like you have crossed a major hurdle in your research journey? No, not even close! What lies next is — publishing your research work for it to reach the science world! The process of publishing a research paper is so intricate, if you miss one aspect, you could end up struggling with revisions and reworks or getting a rejection! Thus, there is a necessity of following an exceptional mode of writing. The APA style research format comes to a researcher’s rescue.

This article discusses how to effortlessly write an APA style research paper and how it is necessary to understand the basic elements of APA style research paper in order to write an article in APA style research format.

Table of Contents

What Is APA Style?

The APA format is the official style of American Psychological Association (APA) and is commonly used to cite sources in psychology, education and social sciences. APA research paper format is widely used in the research publishing industry.

Students and researchers usually get confused with various research paper writing formats and are unclear about the requirements from the research publication journals. Therefore, the best way to deal with beginning to write a research paper is to first know the journal’s requirement and then follow the guidelines accordingly.

Though the reference section may change over the course of time, the information related to the other sections in APA research paper format is similar and could be referred to, for writing an exemplary research paper.

Guidelines for APA Style Paper (7th edition)

An APA style research format is different as compared to a term paper, a creative writing paper, a composition-style paper, or a thought paper. Throughout the paper you need to apply these guidelines while writing the paper –

Page Layout:

Type the content and keep double-space on standard-sized paper (8.5” x 11”), with 1” margins on all sides.

You should indent the first line of every paragraph 0.5 inches

Include a page number on every page.

You could use an accessible font like Times New Roman 12pt., Arial 11pt., or Georgia 11pt.

APA Research Paper Sections

The APA research paper format is based on seven main components: title page, abstract, introduction, methods, results, discussion, and references. The sections in APA-style paper are as follows:

1. Title Page

As per the APA research paper format, the title should be between 10-12 words and should reflect the essence of the paper. After writing the title, write your name followed by name of the college. Furthermore, create a page header using the “View Header” function in MS Word and on the title page include a running head — a short title that appears at the top of pages of published articles (flush left) and page number on the same line (flush right). The running head should not exceed 50 characters, including punctuation and spacing. Moreover, you could use the toolbox to insert a page number, so that it automatically numbers each page.

2. Abstract

Abstract should contain no more than 120 words , and should be one paragraph written in block format with double spacing. Additionally, state the topic in a sentence or two. Also, provide overview of methods, results, and discussion.

APA Style – Abstract in APA Style

3. Introduction

An introduction of APA research paper format is the most difficult section to write. A good introduction critically evaluates the empirical knowledge in the relevant area(s) in a way that defines the knowledge gap and expresses your aim for your study and why you conducted it. However, the challenge here is to keep the reader’s interest in reading your paper.

A good introduction keeps readers engaged with your paper. For writing an interesting introduction, researchers should introduce logical flow of ideas which will eventually lead to the research hypothesis . Furthermore, while incorporating references into your introduction, do not describe every single study in complete detail. Summarize the key findings from the article and do not quote from the articles, instead paraphrase the content .

The method section in APA research paper format is straightforward. However, the protocol and requirements should be mentioned precisely. The goal of this section is to describe your study and experiments in detail, so that there is no issue in reproducibility of results and other researchers could duplicate your methods effectively.

This section includes Materials and/or Apparatus and Experiments/Procedures/Protocols. Furthermore, keep the procedures brief and accurate, and make sure to read through so as to not repeat the steps or avoid redundancy.

In this section, you could describe how you analyzed the data and explain your findings. If your data analyses are complex, then break the section into subsections, ideally a subsection for each hypothesis and elaborate the subsections by using statistical analysis and including tables or figures to represent results visually. Most importantly, do not share interpretation of the results here. You can interpret and explain the results in the discussion section.

6. Discussion

Results are interpreted and understood in this section. Discussion section helps understand the research hypothesis better and places the results in the broader context of the literature in the area. This section is the reversal of introduction section, wherein you begin with the specifics and explain the general understanding of the topics.

In discussion, you start with a brief of your main findings, followed by explaining if your research findings support your hypothesis. Furthermore, you could explain how your findings enhance or support the existing literature on the topic. Connect your results with some of the literature mentioned in the introduction to bring your story back to full circle. You could also mention if there are any interesting or surprising findings in your results. Discuss other theories which could help you justify your surprising results.

Explain the limitation of your study and mention all the additional questions that were generated from your study. You could also mention what further research should be conducted on the topic and what are the knowledge gaps in the current body of research. Finally, mention how your results could relate to the larger issues of human existence and highlight “the big picture” for your readers.

7. References

Provide an alphabetical listing of the references. Do not keep extra spaces between references and double-space all the references. The second line of each reference should be intended. You could refer to the examples (mentioned below) to know how to format references correctly.

I. Journal Article:

Only first letter of the first word of the article title is capitalized; the journal name and volume are italicized. If the journal name had multiple words, each of the major words are capitalized.

Example: Ebner-Priemer, U. W., & Trull, T. J. (2009). Ecological momentary assessment of mood disorders and mood dysregulation. Psychological Assessment, 21 , 463-475. doi:10.1037/a0017075

II. Book Chapter:

Only the first letter of the first word of both the chapter title and book title are capitalized.

Example: Stephan, W. G. (1985). Intergroup relations. In G. Lindzey & E. Aronson (Eds.), The handbook of social psychology (3rd ed., Vol. 2, pp. 599-658). New York: Random House.

Example: Gray, P. (2010). Psychology (6th ed.). New York: Worth

There are various formats for tables, depending upon the information you wish to include. So, be thorough and provide a table number and title (the latter should be italicized). Tables can be single or double-spaced.

Be sure to mention x- and y-axes clearly. Underneath the figure provide a label and brief caption. The figure caption typically includes variables and units of measurements. Also, include error bars in your bar graphs, and note what the bars represent in the figure caption – Error bars represent one standard error above and below the mean.

VI. In-Text Citation:

• Mention the authors’ names and publication date while citing sources in your paper.
• When including the citation as part of the sentence, use AND: “According to Jones and Smith (2003), the…”
• When the citation is written in parentheses, use &: “Studies have shown that priming can affect actual motor behavior (Jones & Smith, 2003; Kiley, Bailey, & Hammer, 1999). The studies in parentheses should appear alphabetically by first author’s last name, and separate it with semicolons.
• You should avoid quoting directly, but in case you do – along with the name and date, include the page number.
• For sources with three or more authors, once you have listed all the authors’ names, you may write “et al.” on subsequent mentions: “Klein et al. (1999) found that…”.
• Meanwhile, when source has six or more authors, the first author’s last name and “et al.” are used every time the source is cited.

VII. Secondary Source:

It is a term used to describe material that is cited in another source. Avoid using secondary sources in your papers. Try to find the primary source and read it before citing in your work. However, if you must mention a secondary source, refer to the APA style paper example below:

Primary source author’s last name (as cited in secondary source author’s last name, year) argued that…

7 Tips for Writing an Error-free APA Style Research Paper

• Although there are exceptions, minimize using first person while writing.
• Avoid including personal statements or anecdotes.
• Although there are exceptions, use past tense while writing.
• Do not use contractions. (e.g., “it does not follow” rather than “it doesn’t follow”)
• Avoid biased language – Be updated with appropriate terminologies, especially if you are writing a paper that includes gender, race, ethnicity, sexual orientation, etc.
• Be certain to cite your sources.
• Try to paraphrase as much as possible, and do not directly quote from source articles.

This article contains only a few aspects of an APA research paper format. There are many APA style rules which can be explored before you begin to write an APA style research paper. Many of the APA research paper format rules are dynamic and subject to change, so it is best to refer to 7 th edition (latest) of the APA Publication Manual and be thorough with every section’s format before writing a research paper.

Have you used an APA research paper format to write your article? Do write to us or comment below and tell us how your experience writing an APA style paper was?

Frequently Asked Questions

The APA format is the official style of American Psychological Association (APA) and is commonly used to cite sources in psychology, education and social sciences.

APA stands for the American Psychological Association. It is a professional organization that focuses on the field of psychology and related disciplines.

Citing sources in APA format involves specific guidelines for different types of sources. In-text Citations: For a paraphrased or summarized idea from a source, include the author's last name and the publication year in parentheses. Example: (Smith, 2021) Reference List Entry for a Journal Article: Only first letter of the first word of the article title is capitalized; the journal name and volume are italicized. If the journal name had multiple words, each of the major words are capitalized. Example: Ebner-Priemer, U. W., & Trull, T. J. (2009). Ecological momentary assessment of mood disorders and mood dysregulation. Psychological Assessment, 21, 463-475. doi:10.1037/a0017075

The APA (American Psychological Association) style is primarily used by researchers, scholars, and students in the social sciences, including psychology, sociology, education, and related fields. However, the APA style is not limited to these disciplines and is also used in other academic and scientific fields when writing research papers or scholarly articles.

As per the 7th edition of APA citation (published in 2020), the last name and first/middle initials for all authors (up to first 20 authors) are mentioned in the bibliography. If there are 21 or more authors, an ellipsis (but no ampersand) is used after the 19th author, and then the final author’s name is added. Generic format: Author, A. A., Author, B. B., & Author, C. C. (Year). Title of article. Title of Journal, Volume # (issue number), Pages. https://doi.org/xx.xxx/yyyy Example: Ebner-Priemer, U. W., & Trull, T. J. (2009). Ecological momentary assessment of mood disorders and mood dysregulation. Psychological Assessment, 21, 463-475. doi:10.1037/a0017075

When quoting in APA format, you need to properly incorporate and cite direct quotations from sources. Introduce the Quote: Begin with a signal phrase or an introductory statement to lead into the quote. This helps provide context and relevance for the quotation. Provide In-text Citation: Immediately after the closing quotation mark, include an in-text citation that provides the author's last name, publication year, and, if applicable, page number(s) of the quoted material. Example: (Smith, 2021, p. 25) Cite the Source in the Reference List: Include a corresponding entry in the reference list for the source you are quoting. The format for the reference list entry depends on the type of source being quoted (e.g., book, journal article, website).

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Research Paper Example

To fully understand what information particular parts of the paper should discuss, here’s another example of a research paper.

This article is a part of the guide:

• Outline Examples
• Example of a Paper
• Write a Hypothesis
• Introduction

Browse Full Outline

• 1 Write a Research Paper
• 2 Writing a Paper
• 3.1 Write an Outline
• 3.2 Outline Examples
• 4.1 Thesis Statement
• 4.2 Write a Hypothesis
• 5.2 Abstract
• 5.3 Introduction
• 5.4 Methods
• 5.5 Results
• 5.6 Discussion
• 5.7 Conclusion
• 5.8 Bibliography
• 6.1 Table of Contents
• 6.2 Acknowledgements
• 6.3 Appendix
• 7.1 In Text Citations
• 7.2 Footnotes
• 7.3.1 Floating Blocks
• 7.4 Example of a Paper
• 7.5 Example of a Paper 2
• 7.6.1 Citations
• 7.7.1 Writing Style
• 7.7.2 Citations
• 8.1.1 Sham Peer Review
• 8.1.2 Advantages
• 8.1.3 Disadvantages
• 8.2 Publication Bias
• 8.3.1 Journal Rejection
• 9.1 Article Writing
• 9.2 Ideas for Topics

It includes some key parts of the paper such as the Abstract , Introduction , Discussion and References :

Text center-aligned and placed at the middle of the page, stating the title of the paper, name of author and affiliation.

A Study on the Factors Affecting the Infant Feeding Practices

Of Mothers in Las Piñas City

By [Author], University of the Philippines

The abstract starts on the next page, page 2. The text starts at the top, left flushed, double-spaced.

Abstract [Abstract here]

The body text starts on the next page, page 3. The text starts at the top, left flushed, double-spaced.

Introduction The melamine controversy that erupted during the last quarter of year 2008 brought people’s attention back to the debates between breastfeeding and the use of breast milk substitutes like commercial infant formula. This wasn’t the first time that infant formula had caused illnesses and even deaths to infants worldwide - hence the continuous campaign of World Health Organization (WHO) and UNICEF along with other breastfeeding advocates, for mothers to breastfeed their children at least until 6 months of age. Infant feeding practices refer generally to meet the nutritional and immunological needs of the baby. A study of infant feeding practices was carried out on a sample of 100 mother and infant pairs. The results revealed that only 20% of mothers in the study currently exclusively breastfeed their babies. It also shows that socio-economic factors like mother’s work status, marital status and educational attainment had direct bearing on these practices. Employed mothers tend to cease from breastfeeding their babies and eventually stop and just resort to formula feeding as they go back to work. The study also showed that mothers who are married and living with their partners are more likely to breastfeed their infants than single mothers. Those with higher educational attainment resort more to formula feeding and mixed feeding than those with lower educational attainment. Health care professionals influence mothers the most when it comes to infant feeding decisions. Methodology Type of Research The type of research that will be used in this study is qualitative research and quantitative research. Qualitative researchers aim to gather an in-depth understanding of human behavior and the reasons that govern such behavior. The discipline investigates the “why” and “how” of decision making. Besides this, the researcher will also examine the phenomenon through observations in numerical representations and through statistical analysis. Along with questionnaires that will be given out to respondents for the statistical representation of the findings in the study, interviews with the respondents and a few experts in this field will also be conducted. Sampling Method The research sampling method that will be used in this study is random sampling to obtain a more scientific result that could be used to represent the entirety of the population. A list of all health care facilities (maternity and lying-in clinics, public and private hospitals, health centers) was acquired from the Las Piñas City Hall. From 20 barangays, 3 will be picked through random sampling. The health care facilities and institutions in these three barangays will then be the target sources of respondents of the researcher. The health care facilities and institutions will be contacted to obtain a verbal consent to administer the questionnaire to mothers at their places. A letter of consent will also be sent to them along with a sample copy of the questionnaire that will be used, as well as the protocol of the researcher. A letter was also addressed to the City Health Officer to obtain endorsement and consent to conduct a research in selected barangays and distribute questionnaires to the mothers in the vicinity. Data collection was conducted throughout the facilities‟ and health centers‟ operating hours from Mondays through Sundays in order to include both working and non-working mothers. Respondents The respondents in this research will all be coming from one single location - Las Piñas City, specifically the randomly selected barangays of Pamplona I, CAA/BF International and Pamplona III. The researcher chose Las Piñas City because of the socio-economic conditions present in the area that is relevant to the study and also as it fits the time frame and resources of the researcher. The randomly sampled respondents will be asked by the researcher for consent and approval to answer the questionnaire until the desired number of respondents which is 100 is reached. The opinion of experts will also be sought in this research to provide explanations regarding the respondents‟ infant feeding behaviors and practices. Questionnaire The questionnaire requires information about the socio-economic and demographic background of the mother. It also has questions related to previous infant feeding practices and the birth of her youngest infant and also regarding the baby’s general health and age. Statements that are perceived to be factors that influence mothers‟ infant feeding decisions were presented. The description of the type of infant formula given by formula and mixed feeding mothers will also be asked in the material. Conclusion Majority of the mothers formula feed their child and only a minority exclusively breastfeeds their children, especially as per recommendation of the World Health Organization. While majority of the mothers in this study showed a positive attitude towards breastfeeding, most of them decided only to formula feed due to the reasons of insufficient milk supply and work. Based on the results of the study, the educational attainment, work status, marital status, and seminars in the barangay the respondents are part of, about breastfeeding, are the significant factors that affect the infant feeding decision of mothers in Las Piñas City. Majority of the mothers that served as respondents in this study fall under the age range of 17-30 years old. More than half of them were also college graduates while a significant number are undergraduates and have only reached until high school. Most of the mothers are housewives and the others remaining have full-time jobs, part-time jobs and self-employed. A few of them are still students. While majority of them were married, a lot were still in a status of live-in and are single. More than half of the mothers did not have previous children before the current one. Majority of the respondents also have an annual gross household income that does not exceed P50,000. Among the several information sources namely, media through televisions/radios and printed/published materials, the social support system comprised of the mother’s family, friends and other relatives and health institutions, the mothers who give their babies infant formula are influenced the most by health care institutions through health professionals and other health care personnel. They influence the mothers in deciding to feed the baby with formula and in choosing, as well, which brand of formula is best for their babies. Mothers trust their baby’s doctor because of their expertise in the said field hence this kind of relation is achieved. Mothers were overall not concerned about the possible side effects of breastfeeding as a few were only worried as shown in the data presented.       It can be concluded that numerous internal as well as external factors influence a mother in making infant feeding decisions, and a greater fraction of these is socio-economic in nature.

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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.

• Break through writer’s block. Write your research paper introduction with Paperpal Copilot

Table of Contents

What is the introduction for a research paper, why is the introduction important in a research paper, craft a compelling introduction section with paperpal. try now, 1. introduce the research topic:, 2. determine a research niche:, 3. place your research within the research niche:, craft accurate research paper introductions with paperpal. start writing now, frequently asked questions on research paper introduction, key points to remember.

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.

Write a Research Paper Introduction in Minutes with Paperpal

Paperpal Copilot is a generative AI-powered academic writing assistant. It’s trained on millions of published scholarly articles and over 20 years of STM experience. Paperpal Copilot helps authors write better and faster with:

• Real-time writing suggestions
• In-depth checks for language and grammar correction
• Paraphrasing to add variety, ensure academic tone, and trim text to meet journal limits

With Paperpal Copilot, create a research paper introduction effortlessly. In this step-by-step guide, we’ll walk you through how Paperpal transforms your initial ideas into a polished and publication-ready introduction.

How to use Paperpal to write the Introduction section

Step 1: Sign up on Paperpal and click on the Copilot feature, under this choose Outlines > Research Article > Introduction

Step 2: Add your unstructured notes or initial draft, whether in English or another language, to Paperpal, which is to be used as the base for your content.

Step 3: Fill in the specifics, such as your field of study, brief description or details you want to include, which will help the AI generate the outline for your Introduction.

Step 4: Use this outline and sentence suggestions to develop your content, adding citations where needed and modifying it to align with your specific research focus.

Step 5: Turn to Paperpal’s granular language checks to refine your content, tailor it to reflect your personal writing style, and ensure it effectively conveys your message.

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.

Paperpal is a comprehensive AI writing toolkit that helps students and researchers achieve 2x the writing in half the time. It leverages 21+ years of STM experience and insights from millions of research articles to provide in-depth academic writing, language editing, and submission readiness support to help you write better, faster.  

Get accurate academic translations, rewriting support, grammar checks, vocabulary suggestions, and generative AI assistance that delivers human precision at machine speed. Try for free or upgrade to Paperpal Prime starting at US$19 a month to access premium features, including consistency, plagiarism, and 30+ submission readiness checks to help you succeed.  

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This paper is in the following e-collection/theme issue:

Published on 28.3.2024 in Vol 26 (2024)

Development and External Validation of Machine Learning Models for Diabetic Microvascular Complications: Cross-Sectional Study With Metabolites

Authors of this article:

Original Paper

• Feng He 1, 2 , MSc   ; 
• Clarissa Ng Yin Ling 1 , MD   ; 
• Simon Nusinovici 1, 3 , PhD   ; 
• Ching-Yu Cheng 1, 3 , PhD   ; 
• Tien Yin Wong 1, 3 , PhD   ; 
• Jialiang Li 2 * , PhD   ; 
• Charumathi Sabanayagam 1, 3 * , PhD  

1 Singapore Eye Research Institute, Singapore National Eye Centre, Singapore, Singapore

2 Department of Statistics and Data Science, National University of Singapore, Singapore, Singapore

3 Ophthalmology and Visual Sciences Academic Clinical Program, Duke-NUS Medical School, Singapore, Singapore

*these authors contributed equally

Corresponding Author:

Charumathi Sabanayagam, PhD

Singapore Eye Research Institute

Singapore National Eye Centre

The Academia, 20 College Road, Discovery Tower Level 6

Singapore, 169856

Phone: 65 6576 7286

Fax:65 6225 2568

Email: [email protected]

Background: Diabetic kidney disease (DKD) and diabetic retinopathy (DR) are major diabetic microvascular complications, contributing significantly to morbidity, disability, and mortality worldwide. The kidney and the eye, having similar microvascular structures and physiological and pathogenic features, may experience similar metabolic changes in diabetes.

Objective: This study aimed to use machine learning (ML) methods integrated with metabolic data to identify biomarkers associated with DKD and DR in a multiethnic Asian population with diabetes, as well as to improve the performance of DKD and DR detection models beyond traditional risk factors.

Methods: We used ML algorithms (logistic regression [LR] with Least Absolute Shrinkage and Selection Operator and gradient-boosting decision tree) to analyze 2772 adults with diabetes from the Singapore Epidemiology of Eye Diseases study, a population-based cross-sectional study conducted in Singapore (2004-2011). From 220 circulating metabolites and 19 risk factors, we selected the most important variables associated with DKD (defined as an estimated glomerular filtration rate <60 mL/min/1.73 m 2 ) and DR (defined as an Early Treatment Diabetic Retinopathy Study severity level ≥20). DKD and DR detection models were developed based on the variable selection results and externally validated on a sample of 5843 participants with diabetes from the UK biobank (2007-2010). Machine-learned model performance (area under the receiver operating characteristic curve [AUC] with 95% CI, sensitivity, and specificity) was compared to that of traditional LR adjusted for age, sex, diabetes duration, hemoglobin A 1c , systolic blood pressure, and BMI.

Results: Singapore Epidemiology of Eye Diseases participants had a median age of 61.7 (IQR 53.5-69.4) years, with 49.1% (1361/2772) being women, 20.2% (555/2753) having DKD, and 25.4% (685/2693) having DR. UK biobank participants had a median age of 61.0 (IQR 55.0-65.0) years, with 35.8% (2090/5843) being women, 6.7% (374/5570) having DKD, and 6.1% (355/5843) having DR. The ML algorithms identified diabetes duration, insulin usage, age, and tyrosine as the most important factors of both DKD and DR. DKD was additionally associated with cardiovascular disease history, antihypertensive medication use, and 3 metabolites (lactate, citrate, and cholesterol esters to total lipids ratio in intermediate-density lipoprotein), while DR was additionally associated with hemoglobin A 1c , blood glucose, pulse pressure, and alanine. Machine-learned models for DKD and DR detection outperformed traditional LR models in both internal (AUC 0.838 vs 0.743 for DKD and 0.790 vs 0.764 for DR) and external validation (AUC 0.791 vs 0.691 for DKD and 0.778 vs 0.760 for DR).

Conclusions: This study highlighted diabetes duration, insulin usage, age, and circulating tyrosine as important factors in detecting DKD and DR. The integration of ML with biomedical big data enables biomarker discovery and improves disease detection beyond traditional risk factors.

Introduction

Diabetes is a complex metabolic disorder and a major global health problem of our time. In 2021, it affected 536.6 million adults worldwide, with a projected surge to 783.2 million by 2045 [ 1 ]. With the rapidly growing population with diabetes and the greater longevity over time, the burden of associated complications is expected to increase in parallel [ 2 ]. Among these, diabetic kidney disease (DKD) was estimated to develop in around 40% of the population with diabetes [ 3 ], while diabetic retinopathy (DR) would manifest in approximately 35% [ 4 ]. Left undetected and untreated, these microvascular complications could substantially elevate the risk of cardiovascular disease (CVD), end-stage renal disease, and permanent vision loss, resulting in compromised quality of life and shortened life expectancy [ 2 , 5 , 6 ]. Yet, timely and accurate diagnosis of DKD and DR remains a challenge because of their asymptomatic progression in the early stages [ 7 ]. Although factors such as age, sex, diabetes duration, hemoglobin A 1c (HbA 1c ) %, systolic blood pressure (SBP), and BMI have been identified as the risk contributors for DKD and DR, they offer only partial insights into the variability of risk among individuals.

To enable risk prediction and exploration of the underlying metabolic pathways, metabolomics has been increasingly used for biomarker discovery in diabetes and its complications [ 7 - 10 ]. Abnormalities in amino acids and lipids metabolism have been linked to both DKD and DR [ 7 ]. Given the similar microvascular structure, physiology, and pathogenic features of the kidney and the eye, these common metabolic traits may indicate biochemical pathways shared by the 2 complications, or both being manifestations of a latent systematic condition [ 11 ]. However, to the best of our knowledge, investigations into the commonalities and differences between DKD and DR in terms of their metabolic basis have been somewhat scarce [ 7 , 12 ]. Moreover, prior research was often limited by inadequate sample sizes, lack of replication, and restricted data analysis methods [ 13 ].

In this study, we aimed to fill these gaps by analyzing 220 circulating metabolites and 19 established risk factors as predictors of prevalent DKD and DR in a retrospective Asian adult population with diabetes. We used 2 machine learning (ML) algorithms, logistic regression (LR) with Least Absolute Shrinkage and Selection Operator (LASSO [ 14 ]), and a gradient-boosting decision tree (GBDT [ 15 ]). Compared with traditional statistical methods, these ML algorithms excel in handling high-dimensional data with complex relationships and can quantify the relative contribution of individual variables through variable importance scores. Based on these scores, we selected the top variables to develop ML models for DKD and DR detection and validated them externally in UK biobank (UKBB [ 16 ]) data. Additionally, we developed reference models using LR adjusted for traditional risk factors. All models were evaluated using the area under the receiver operating characteristic curve (AUC) with 95% CI, sensitivity, and specificity. Finally, we discussed the potential role of the selected metabolites in DKD and DR with reference to previous studies.

We derived this study’s data from the Singapore Epidemiology of Eye Diseases study (SEED [ 17 ]), a population-based cross-sectional study conducted in Singapore from 2004 to 2011. Detailed methodology has been reported elsewhere [ 17 ]. In brief, we recruited 10,033 adults aged 40-80 years using age-stratified random sampling. Participants completed interviewer-administered questionnaires, underwent ocular examinations, and provided samples for biochemical laboratory tests. The cohort included 3280 Malay (2004-2006, response rate 78.7%), 3400 Indian (2007-2009, response rate 75.6%), and 3353 Chinese (2009-2011, response rate 72.8%) individuals.

For external validation, we used data from UKBB, an open-access resource of prospective data set collected in the UK from 2007 to 2010, with over 500,000 participants recruited between the ages of 40 to 69 [ 16 ].

Ethical Considerations

Both SEED and UKBB studies were conducted per the Declaration of Helsinki. Ethical approval was obtained from the SingHealth Institutional Review Board for SEED (2018/2717, 2018/2921, 2018/2006, 2018/2594, 2018/2570, 2015/2279, and 2012/487/A) and from North West Multi-centre Research Ethics Committee for UKBB (21/NW/0157). Written informed consent was provided by all participants during the primary data collection. Due to the retrospective nature of our study and the use of deidentified health information, the SingHealth Institutional Review Board approved this study without requiring additional patient consent.

Definition of Outcome and Variables

In SEED, diabetes was defined as meeting any of the following criteria: HbA 1c % >6.5, random blood glucose >11.1 mmol/L, self-reported physician-diagnosed diabetes, or the use of antidiabetic medication including insulin. In UKBB, we applied the same definition but additionally included individuals with DR if the aforementioned variables were missing.

DKD was defined as an estimated glomerular filtration rate (eGFR) <60 mL/min/1.73m 2 in people with diabetes. The eGFR values were calculated from blood creatinine concentrations using the chronic kidney disease epidemiology collaboration equation [ 18 ].

For SEED participants with diabetes, DR severity in each eye was graded from fundus photographs by certified ophthalmic graders according to the standard protocol of Early Treatment Diabetic Retinopathy Study (ETDRS) [ 2 , 19 ] with 6 stages: no DR (level 10-20), minimal (level 20), mild (level 35), moderate (levels 43 to 47), severe (level 53), and proliferative DR (levels >60). We defined the DR outcome as having an ETDRS level ≥20 in at least one eye (ie, any DR). In UKBB, DR severity was not graded. Therefore, we identified DR cases based on the International Classification of Diseases, Tenth Revision (ICD-10) code “H36.0” in their health-related outcomes (UKBB Data-Field: 41270) [ 16 ]. Supplementary analysis in SEED also considered moderate or worse DR (level >43 in at least one eye) as an additional outcome.

We considered a total of 239 variables for biomarker selection ( Multimedia Appendix 1 ). Among these, 19 variables were identified through a literature review, comprising 6 traditional risk factors (age, sex, duration of diabetes, HbA 1c %, SBP, and BMI), and 13 extended risk factors related to lifestyle (alcohol consumption and smoking), medication use (insulin, anticholesterol, and antihypertensive medication), clinic or biochemistry (diastolic blood pressure [DBP], pulse pressure [PP], random blood glucose, total cholesterol, high-density lipoprotein [HDL] cholesterol, and low-density lipoprotein cholesterol), and comorbidity conditions (hypertension and history of CVD). Hypertension in both cohorts was defined as self-reported physician-diagnosed hypertension, SBP >140 mm Hg, DBP >80 mm Hg, or the use of antihypertensive medication.

Using nuclear magnetic resonance techniques (Nightingale Health), we quantified the concentration of 228 circulating metabolites from patients’ blood samples. Of these, glycerol, pyruvate, and glutamine were not available for Malay individuals, creatinine was used in eGFR calculation and DKD outcome definition, while 4 metabolites (total, HDL, low-density lipoprotein cholesterols, and random blood glucose) were duplicated with those measured in biochemistry tests. Therefore, these variables were excluded from the analysis, leaving us with 220 metabolites from 15 categories (amino acids, apolipoproteins, cholesterol, cholesterol esters, fatty acids, fluid balance, free cholesterols, glycolysis-related metabolites, inflammation, ketone bodies, triglycerides, lipoprotein particle sizes, lipoprotein subclasses, lipoprotein lipid ratios, and other lipids).

Statistical Analysis

Inclusion and exclusion criteria.

From the initial SEED data set of 10,033 participants, we excluded those free of diabetes (n=7069), missing metabolomics profiles (n=179), or missing more than 10% (n=13) of the data, to obtain a final study population of 2772 individuals. Similarly, we identified 5843 UKBB participants eligible for external validation after data cleaning ( Figure 1 ).

Descriptive Statistics

We categorized SEED participants into 4 groups based on their DKD and DR status, and summarized group characteristics as number (%), mean (SD), or median (IQR) as appropriate for each variable. Differences among groups were assessed using 2-sided P values derived from Pearson χ 2 tests or Fisher exact test for categorical variables, and Kruskal-Wallis rank sum tests for numeric variables. We also evaluated the interpopulation differences between SEED and UKBB using Pearson χ 2 tests and Mann-Whitney U tests as appropriate for each variable. Some subcategories may not add up due to the presence of missing data.

ML Algorithms

We used LASSO [ 14 ] and GBDT [ 15 ] to identify the key biomarkers and develop disease detection models for DR and DKD. LASSO is an extension of traditional LR that does not require the independence of variables. Therefore, LASSO is suitable for high-dimensional data sets where issues such as multicollinearity often arise. During parameter optimization, LASSO automatically shrinks the coefficients of the less-important variables to zero, while retaining nonzero coefficients for the important ones to achieve biomarker selection. Its strengths include relatively straightforward computation and parameter tuning compared to other ML algorithms. However, its scope is limited to examining only the linear associations between continuous variables and the log-odds. To account for possible nonlinear effects and variable interactions, we additionally implemented the GBDT algorithm, which constructs a sequence of interdependent decision trees to collectively make a decision. During the process, the algorithm assesses each variable’s contribution to minimizing prediction errors, returning a score for its relative influence. We then applied a predefined threshold to select the most influential variables for disease detection based on their scores in each selection round. GBDT is known for its adaptability to various data distributions with generally strong performances, yet its hyper-parameter tuning and computation can be rather time-consuming, with a higher chance of overfitting, and less transparency compared to LASSO.

Model Development and Validation

In SEED, we handled missing data by excluding variables and participants with high levels of missing information, yielding a final data set with each variable containing less than 6% (161/2772) missing data and a participant-level missing data percentage of 10% or less (23/239, Multimedia Appendix 2 ). Following this, missing data imputation was carried out by using mean values for numeric variables, and modes for categorical variables as appropriate. To mitigate selection bias arising from data division into training and validation sets, we averaged the results over 200 random repeats of 5-fold cross-validation. In each repeat, the imputed SEED data set was randomly divided into 5 subsets (ie, folds) of equal sample size by stratified sampling to ensure consistent case rates. Each fold (553/2772, 20% of data) took its turn as the validation set, while the remaining 4 folds (2219/2772, 80% of data) were used for model training and variable selection. From 200 replicates we generated 1000 sets of variable selection results, based on which we quantified each variable’s contribution to the model’s performance by calculating a variable importance score, as the variable’s selection frequency during the repeated cross-validation process.

Next, we arranged the variables in descending order of their selection frequencies and included only those selected 990 times or more (ie, selection frequency 0.990) in the final model. To evaluate the performance of these new models, we performed another 200 random repeats of 5-fold cross-validation but used only the complete cases (ie, no missing data imputation). The final machine-learned models were compared with the multivariate LR models adjusted for the 6 established risk factors including age, sex, diabetes duration, HbA 1c %, SBP, and BMI. The performance of these models was evaluated in internal and external validation using AUC with 95% CI, sensitivity, and specificity. We reported sensitivity and specificity at the optimal threshold, where sensitivity equals specificity. Additionally, in the context of DR and DKD detection, where the cost of false negatives is generally higher than that of false positives, we prioritized higher sensitivity over higher specificity by setting the probability threshold at 0.8 sensitivity to compare the specificity. The AUC difference between machine-learned models and the traditional model was evaluated using the test by DeLong et al [ 20 ]. For the supplementary analysis, we examined the importance of the top machine-learned variables within nested models, to check for any marginal increase in AUC with additional variables. We also calculated the AUC for ML models with all the variables.

Metabolites Selection

Finally, we focused on the metabolites that were consistently selected by both ML algorithms. We quantified their associations with DKD and DR respectively, using odds ratios (OR) per SD increment with 95% CI, and P values from multivariate LR models adjusted for age, sex, diabetes duration, insulin use, HbA 1c %, PP, BMI, cholesterol, and HDL cholesterol.

We conducted all the analyses in R version 4.0.2. (R Foundation) and defined statistical significance as P <.05.

Population Characteristics

Figure 1 illustrates the data cleaning and analysis workflow. In the SEED population with diabetes, 2674 people had information on both disease outcomes ( Multimedia Appendix 3 ). Of these, 1657 (62%) had neither DKD nor DR, 338 (12.6%) had DKD but not DR, 496 (18.5%) had DR but not DKD, and 183 (6.8%) had both DKD and DR. People with DKD, regardless of their DR status, tended to be older, with higher PP, higher SBP, and lower DBP. They also had higher levels of HDL cholesterol, more history of hypertension and CVD, and were more likely to have used anticholesterol medication and antihypertensive medication. However, they had a lower smoking rate and reported less alcohol consumption than those without DKD. People with DR, regardless of their DKD status, tended to have a longer duration of diabetes, with the use of antidiabetic medication and insulin, higher HbA 1c %, and random blood glucose levels. They also had a lower BMI and lower total cholesterol levels. For people with both complications, the abovementioned characteristics further differed from those with neither complication. However, in terms of sex distribution, no significant difference was observed ( P =.09).

We also found differences between SEED and UKBB in terms of demographics, lifestyle factors, biochemical laboratory results, and medical history ( Multimedia Appendix 4 ). In particular, UKBB participants had a lower prevalence of both DKD (374/5570, 6.7%) and DR (355/5843, 6.1%) as compared to SEED (DKD prevalence: 555/2753, 20.2%, and DR prevalence: 685/2693, 25.4%), with only 0.7% (41/5570) having both complications. SEED had a median age of 61.7 (IQR 53.5-69.4) years and 49.1% (1361/2772) women, whereas UKBB had a median age of 61.0 (IQR 55.0-65.0) years and 35.8% (2090/5843) women. SEED was a multiethnic sample based in Singapore with 36.8% (1020/2772) Malay, 45.5% (1262/2772) Indian, and 17.7% (490/2772) Chinese individuals. In contrast, over 81.8% (4778/5843) of the UKBB participants were British, with the rest being Indian (217/5843, 3.7%), Irish (132/5843, 2.3%), Caribbean (93/5843, 1.6%), African (85/5843, 1.5%), or other ethnicities (538/5843, 9.2%).

Figure 2 shows the top 50 variables arranged in descending orders of their variable importance. For DKD detection, LASSO identified 15 variables with a frequency exceeding the cutoff, while GBDT identified 13, so we used the top 15 for deriving the corresponding DKD models; then for DR, LASSO identified 10 variables, while GBDT identified 6, so we used the top 10 for DR.

In the internal validation, GBDT models performed the best with an AUC of 0.838 for DKD and 0.790 for DR, followed by LASSO with AUC values of 0.832 and 0.779, respectively. In contrast, LR only achieved AUC scores of 0.743 for DKD, and 0.764 for DR. In the external validation using UKBB data, LASSO models exhibited the best performance with AUC values of 0.791 for DKD, and 0.778 for DR. GBDT models achieved AUC scores of 0.738 and 0.778, respectively, while LR resulted in AUC values of 0.691 and 0.760 ( Figure 3 ).

Further tests confirmed that the AUC scores of ML models were significantly higher than those obtained using traditional LR (2-sided P <.001). In terms of sensitivity and specificity at the optimal threshold (where sensitivity=specificity), LASSO and GBDT achieved comparable performance in internal validation (for DKD, 0.757 by LASSO vs 0.751 by GBDT; for DR, 0.708 by LASSO vs 0.709 by GBDT), and both were superior to LR (0.674 for DKD and 0.696 for DR). In external validation, LASSO performed the best, with 0.723 for DKD and 0.716 for DR. At 0.8 sensitivity, LASSO achieved 0.636 specificity for DKD detection in UKBB, and 0.617 for DR, outperforming the other 2 models ( Table 1 ).

a AUC: area under the receiver operating characteristic curve.

b SN: sensitivity.

c SP: specificity.

d Final sample size after variable selection and missing data removal.

e DKD: diabetic kidney disease.

f SEED: Singapore Epidemiology of Eye Diseases.

g LR: logistic regression.

h LASSO: Least Absolute Shrinkage and Selection Operator.

i GBDT: gradient-boosting decision tree.

j UKBB: UK biobank.

k DR: diabetic retinopathy.

In the sensitivity analysis, we evaluated the potential improvement in AUC by introducing additional variables in nested models ( Multimedia Appendix 5 ). The results supported the effectiveness of using the top 10 variables for detecting DR in SEED. In line with this, using all 239 variables did not improve beyond what was achieved with the top 10 in both internal validation (LASSO 0.776 and GBDT 0.783) and external validation (LASSO 0.754 and GBDT 0.774). Yet for DKD, incorporating additional variables beyond the top 15 resulted in improved AUC in SEED. Specifically, using all 239 variables yielded higher AUC values of 0.859 for LASSO and 0.842 for GBDT. However, this increase may be attributed to overfitting, as a similar pattern was not observed in external validation. Further, using all available variables resulted in lower AUC values for both LASSO (0.694) and GBDT (0.721) in the UKBB cohort. Consequently, we decided to maintain the DKD model with the top 15 variables for its simplicity and effectiveness.

For DKD, both LASSO and GBDT selected 5 risk factors (duration of diabetes, history of CVD, antihypertensive medication use, age, and insulin use) and 4 metabolites (tyrosine, lactate, cholesterol esters to total lipid ratio in intermediate-density lipoprotein particles [IDL-CE%], and citrate). For any DR, both algorithms identified 6 risk factors (insulin use, HbA 1c %, duration of diabetes, random blood glucose, age, and PP) and 2 metabolites (tyrosine and alanine). In the supplementary analysis, tyrosine was again selected for moderate or worse DR detection ( Multimedia Appendix 6 ).

Table 2 shows the association of the machine-learned metabolites with DKD and DR in multivariable LR models. We found tyrosine to be negatively associated with both DKD (OR 0.65, 95% CI 0.58-0.73; P <.001) and DR (OR 0.90, 95% CI 0.81-1.00; P =.047). High levels of alanine were associated with increased DR prevalence (OR 1.31, 95% CI 1.18-1.45; P <.001), but with decreased DKD prevalence (OR 0.72, 95% CI 0.64-0.80; P <.001). Similarly, a high level of lactate was linked to higher DR prevalence (OR 1.16, 95% CI 1.05-1.28; P =.004) but with lower DKD prevalence (OR 0.71, 95% CI 0.63-0.80; P <.001). Finally, a high level of citrate was associated with increased DKD prevalence (OR 1.90, 95% CI 1.70-2.12; P <.001), while high IDL-CE% was linked to decreased DKD prevalence (OR 0.46, 95% CI 0.40-0.53; P <.001).

a DKD: diabetic kidney disease.

b DR: diabetic retinopathy.

c OR: odds ratio.

d IDL-CE%: cholesterol esters to total lipid ratio in intermediate-density lipoprotein particles.

Principal Findings

ML selected age, use of insulin, duration of diabetes, and circulating tyrosine as the most important markers for DKD and DR detection in the SEED population with diabetes. Additionally, DKD was associated with the use of antihypertensive medications, CVD history, and 3 metabolites (lactate, citrate, and IDL-CE%), whereas DR was additionally linked to HbA 1c , random blood glucose, PP, and alanine.

The ML models developed in the SEED cohort with diabetes were externally validated using UKBB data. In both cohorts, ML models outperformed the traditional LR in terms of AUC, sensitivity, and specificity, demonstrating their potential to discover novel biomarkers and enable disease screening when integrated with health care and metabolite data.

Comparison With Prior Work

Our main data set included a comprehensive set of 19 risk factors and 220 circulating metabolites measured in 2772 individuals. The detailed patient profiling with a robust sample size allowed an opportunity to identify the markers most relevant to DKD and DR, offering insights into the systematic alteration of metabolism and underlying pathways.

In line with the previous literature [ 4 , 13 ], ML consistently identified 3 key factors—diabetes duration, age, and the use of insulin—as the top risk factors for both DKD and DR. However, ML also revealed novel aspects concerning some established risk factors for these conditions. For instance, our ML models exhibited a notable preference for PP over SBP and DBP in DR detection, supporting the study by Yamamoto et al [ 21 ] that PP, as a surrogate marker of arterial stiffness, reflected both the SBP elevation and DBP reduction, thereby carrying more predictive information for DR than other blood pressure metrics. Another example was assessing the relative importance of glycemia control indicators, where HbA 1c % consistently received a higher selection frequency in our ML models compared to random blood glucose levels. This was probably because HbA 1c % was averaged to reflect a mean shift with much less random noise, while random blood glucose data might carry more noise from life cycle changes and interindividual variability [ 22 ]. Interestingly, some well-established risk factors usually included such as sex did not appear in the top-ranking lists by ML, although this variable had been selected by traditional LR models on the same population in previous studies [ 23 ]. This could be because sex is an intrinsic component of other phenotypes. For instance, male sex was associated with CVD [ 24 ], a condition well-known to be linked to DKD and DR [ 2 ].

We noted high levels of tyrosine, an aromatic amino acid, to be negatively associated with the prevalence of DKD and DR, supporting the ADVANCE trial where increased tyrosine concentration was linked to a decreased risk of diabetic microvascular events (hazard ratio 0.78, 95% CI 0.67-0.91) [ 12 ]. Tyrosine is mainly synthesized from phenylalanine hydroxylation in the liver and kidney; impaired kidney function is therefore associated with reduced phenylalanine hydroxylase activity characterized by low blood tyrosine levels [ 12 ]. Additionally, tyrosine serves as a precursor to catecholamine neurotransmitters (dopamine, norepinephrine, and epinephrine), and plays a pivotal role in central nervous system functions and activities [ 25 ]. In metabolic disorders such as diabetes, reduced blood tyrosine can affect its uptake into the brain and also the synthesis and release of transmitters, thereby altering hormonal function, affective state, and blood pressure [ 25 ], potentially linked to higher microvascular risks.

Another amino acid selected by ML was alanine, and its higher concentration in blood was associated with higher DR prevalence, but lower DKD prevalence. In the ADVANCE trial, a negative association was reported between circulating alanine and an aggregated microvascular outcome, defined as new or worsening nephropathy or retinopathy (hazard ratio 0.86, 95% CI 0.76-0.98) [ 12 ]. In other research, high levels of blood amino acids such as alanine have been linked to inhibited insulin signaling to glucose transport, phosphorylation, and glycogen synthesis, causing insulin resistance, which impairs hepatic mitochondrial function in patients with diabetes and contributes to diabetes microvascular complications such as DR [ 26 , 27 ].

Among the ML-selected metabolites for DKD, high levels of lactate were found to be associated with lower DKD prevalence. However, another study conducted in the DKD population suggested an accumulation of acid due to abnormal lactate metabolism causing fibrosis and mitochondrial abnormalities, leading to further kidney damage [ 28 ]. Nevertheless, further investigations are required to understand the complex association between circulating lactate and DKD. Another metabolite identified was citrate, which showed a positive association with DKD in SEED. In people with DKD, an elevated plasma citrate level has been linked to reduced organic anion transport and dysregulated mitochondrial functions of the kidney tissues [ 8 ]. Our study also highlighted the significance of IDL-CE% in diabetic microvascular complications, revealing its inverse association with prevalent DKD in the SEED population with diabetes. Aberrations in lipoprotein composition have been reported to be indicative of insulin resistance and impaired glucose tolerance in the general population, known to cause future diabetes [ 9 , 27 ]. In people with type 1 DKD, abnormality in lipoproteins clearance was further linked to impaired kidney function [ 29 ].

For biomarker discovery, traditional studies often relied on LR models to examine metabolites one by one separately [ 12 , 30 ], with stringent model assumptions and multiple testing corrections [ 9 , 31 ]. Herein, our ML approach was more efficient in the sense that it simultaneously examines all variables for potential associations. While LASSO was limited to detecting linear associations, we implemented GBDT as a complementary model to additionally assess nonlinear terms and high-order interactions. As was shown in Figure 2 , DR-related variables in GBDT had higher selection frequencies than in LASSO, suggesting the existence of such complex associations. Still, LASSO models achieved superior performance in external validation, indicating a prominent contribution of linear associations to DKD and DR detection. Another highlight of our methodology was the repeated cross-validation, which reduced the influence of potential outliers and ensured the randomness of sampling, thereby generating results more robust than those relying on a fixed training set. This approach also allowed us to quantify individual contributions of variables based on their selection frequencies. However, alternative definitions of variable importance scores [ 32 ] may be considered in a future study to potentially refine the variable selection process.

Globally, three-quarters of those with diabetes live in low- and middle-income countries, particularly India and China [ 33 ]. While the risk profile of Asian patients with diabetes differs from that in high-income “Western” societies in terms of age, BMI, lifestyle, diet, and many other aspects [ 33 ], there has been limited discussion on Asian populations with diabetes. Our study, conducted in Asian populations (Malay, Indian, and Chinese), may contribute to the topic by allowing an opportunity to identify the commonalities and differences between DKD and DR in terms of circulating metabolic traits, offering insights into the systematic alteration of metabolism in diabetes.

Limitations

In total, 1 limitation of this study was that we did not separate study subjects by diabetes type. Since around 95% of the SEED population with diabetes had type 2 diabetes, our results would mainly reflect the variable associations with type 2 diabetes. While these associations hold potential for hypothesis generation and disease detection, the cross-sectional nature of our study highlights the need for caution in drawing causal inferences. Future longitudinal studies are warranted to establish temporal associations based on our current findings.

Another issue was data availability—albuminuria, an important indicator of kidney disease [ 13 ], and 3 metabolites (pyruvate, glycerol, and glutamine) were missing in Malay individuals of the SEED population. Hence, these variables were excluded from the analysis. Certain diabetic medications were reported to potentially interfere with circulating metabolite levels [ 12 , 34 , 35 ]. However, we could only account for the use of insulin due to limited data availability on UKBB medication profiles. Furthermore, we noted a difference in defining DR between our development data set (SEED), which used the standard ETDRS classification system, and the external test set (UKBB), where DR cases were identified using ICD-10 codes. This variance in outcome definition might have introduced some degree of misclassification in UKBB. Additionally, due to the absence of ETDRS-based severity scores in UKBB, validation of the supplementary model for moderate or worse DR in supplementary analysis was not feasible. Nevertheless, it was noteworthy that the features identified in SEED remained relevant for enhancing DR detection in the UKBB data set. However, we acknowledge that the discrepancy in DR definition underscores the need for caution when interpreting results, particularly in the context of clinical or practical applications. Future research may benefit from adopting a uniform approach to DR classification to minimize such limitations and enhance result validity.

Conclusions

In conclusion, current ML models developed using the SEED population with diabetes and subsequently validated in UKBB showed superior performance compared to traditional LR for DKD and DR detection. ML highlighted age, use of insulin, diabetes duration, and tyrosine as the most influential factors in DKD and DR. Additionally, DKD was associated with high levels of citrate, low levels of lactate, and low IDL-CE%; while DR was linked to higher levels of alanine. The integration of ML with health care data and metabolomics could facilitate biomarker selection and enable disease screening.

Acknowledgments

We thank all the participants of Singapore Epidemiology of Eye Diseases (SEED) and UK biobank (UKBB) for contributing their health profiles to support our research. ChatGPT (OpenAI) [ 36 ] was used solely for proofreading purposes, focusing on grammar and spelling corrections. All such revisions were reviewed and validated by human coauthors. This study was supported by the Singapore Ministry of Health’s National Medical Research Council (NMRC/StaR/016/2013, NMRC/CIRG/1371/2013, NMRC/CIRG/1417/2015, and OFLCG/001/2017). The funders had no role in study design; data collection, management, analysis, and interpretation; preparation, and review of this paper; or decision to publish.

Data Availability

As the Singapore Epidemiology of Eye Diseases (SEED) study involves human participants, the data cannot be made freely available in this paper, the supplemental files, or a public repository due to ethical restrictions. Nevertheless, the data are available from the Singapore Eye Research Institutional Ethics Committee for researchers who meet the criteria for access to confidential data. Interested researchers can send data access requests to the Singapore Eye Research Institute. The UK biobank (UKBB) test data set was obtained from the UKBB (application 45925). Data cannot be shared publicly due to the violation of patient privacy and the absence of informed consent for data sharing.

Authors' Contributions

All authors contributed to the intellectual development of this paper. JL and CS designed this study and supervised data analysis. FH and CNYL wrote the initial draft. FH performed the statistical analyses. SN, CC, TYW, JL, and CS assisted in the interpretation of the analyzed data and provided critical corrections to this paper. CS is the guarantor of this work and as such had full access to all the data in this study and takes responsibility for the integrity of the data and accuracy of the data analysis. The final version of this paper has been seen and approved by all the authors.

Conflicts of Interest

None declared.

List of 239 Singapore Epidemiology of Eye Diseases (SEED) variables included for machine learning feature selection.

Distribution of missing data in Singapore Epidemiology of Eye Diseases (SEED), column-wise and row-wise histograms.

Population characteristics of Singapore Epidemiology of Eye Diseases (SEED) stratified by diabetic kidney disease (DKD) and diabetic retinopathy (DR) status.

Comparative analysis of population characteristics: Singapore Epidemiology of Eye Diseases (SEED) vs UK biobank.

Area under the receiver operating characteristic curve performance of nested models in internal validation with varying numbers of machine-learned variables.

Top-50 machine-learned variables for moderate or worse diabetic retinopathy (DR) detection.

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Abbreviations

Edited by A Mavragani; submitted 18.01.23; peer-reviewed by KH Hung, G Lim; comments to author 25.09.23; revised version received 12.10.23; accepted 19.12.23; published 28.03.24.

©Feng He, Clarissa Ng Yin Ling, Simon Nusinovici, Ching-Yu Cheng, Tien Yin Wong, Jialiang Li, Charumathi Sabanayagam. Originally published in the Journal of Medical Internet Research (https://www.jmir.org), 28.03.2024.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work, first published in the Journal of Medical Internet Research, is properly cited. The complete bibliographic information, a link to the original publication on https://www.jmir.org/, as well as this copyright and license information must be included.

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• How to Write a Research Proposal | Examples & Templates

How to Write a Research Proposal | Examples & Templates

Published on October 12, 2022 by Shona McCombes and Tegan George. Revised on November 21, 2023.

A research proposal describes what you will investigate, why it’s important, and how you will conduct your research.

The format of a research proposal varies between fields, but most proposals will contain at least these elements:

Introduction

Literature review.

• Research design

Reference list

While the sections may vary, the overall objective is always the same. A research proposal serves as a blueprint and guide for your research plan, helping you get organized and feel confident in the path forward you choose to take.

Table of contents

Research proposal purpose, research proposal examples, research design and methods, contribution to knowledge, research schedule, other interesting articles, frequently asked questions about research proposals.

Academics often have to write research proposals to get funding for their projects. As a student, you might have to write a research proposal as part of a grad school application , or prior to starting your thesis or dissertation .

In addition to helping you figure out what your research can look like, a proposal can also serve to demonstrate why your project is worth pursuing to a funder, educational institution, or supervisor.

Research proposal length

The length of a research proposal can vary quite a bit. A bachelor’s or master’s thesis proposal can be just a few pages, while proposals for PhD dissertations or research funding are usually much longer and more detailed. Your supervisor can help you determine the best length for your work.

One trick to get started is to think of your proposal’s structure as a shorter version of your thesis or dissertation , only without the results , conclusion and discussion sections.

Download our research proposal template

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Writing a research proposal can be quite challenging, but a good starting point could be to look at some examples. We’ve included a few for you below.

• Example research proposal #1: “A Conceptual Framework for Scheduling Constraint Management”
• Example research proposal #2: “Medical Students as Mediators of Change in Tobacco Use”

Like your dissertation or thesis, the proposal will usually have a title page that includes:

• The proposed title of your project
• Your supervisor’s name
• Your institution and department

The first part of your proposal is the initial pitch for your project. Make sure it succinctly explains what you want to do and why.

Your introduction should:

• Introduce your topic
• Give necessary background and context
• Outline your  problem statement  and research questions

To guide your introduction , include information about:

• Who could have an interest in the topic (e.g., scientists, policymakers)
• How much is already known about the topic
• What is missing from this current knowledge
• What new insights your research will contribute
• Why you believe this research is worth doing

As you get started, it’s important to demonstrate that you’re familiar with the most important research on your topic. A strong literature review  shows your reader that your project has a solid foundation in existing knowledge or theory. It also shows that you’re not simply repeating what other people have already done or said, but rather using existing research as a jumping-off point for your own.

In this section, share exactly how your project will contribute to ongoing conversations in the field by:

• Comparing and contrasting the main theories, methods, and debates
• Examining the strengths and weaknesses of different approaches
• Explaining how will you build on, challenge, or synthesize prior scholarship

Following the literature review, restate your main  objectives . This brings the focus back to your own project. Next, your research design or methodology section will describe your overall approach, and the practical steps you will take to answer your research questions.

To finish your proposal on a strong note, explore the potential implications of your research for your field. Emphasize again what you aim to contribute and why it matters.

For example, your results might have implications for:

• Improving best practices
• Informing policymaking decisions
• Strengthening a theory or model
• Challenging popular or scientific beliefs
• Creating a basis for future research

Last but not least, your research proposal must include correct citations for every source you have used, compiled in a reference list . To create citations quickly and easily, you can use our free APA citation generator .

Some institutions or funders require a detailed timeline of the project, asking you to forecast what you will do at each stage and how long it may take. While not always required, be sure to check the requirements of your project.

Here’s an example schedule to help you get started. You can also download a template at the button below.

Download our research schedule template

If you are applying for research funding, chances are you will have to include a detailed budget. This shows your estimates of how much each part of your project will cost.

Make sure to check what type of costs the funding body will agree to cover. For each item, include:

• Cost : exactly how much money do you need?
• Justification : why is this cost necessary to complete the research?
• Source : how did you calculate the amount?

To determine your budget, think about:

• Travel costs : do you need to go somewhere to collect your data? How will you get there, and how much time will you need? What will you do there (e.g., interviews, archival research)?
• Materials : do you need access to any tools or technologies?
• Help : do you need to hire any research assistants for the project? What will they do, and how much will you pay them?

If you want to know more about the research process , methodology , research bias , or statistics , make sure to check out some of our other articles with explanations and examples.

Methodology

• Sampling methods
• Simple random sampling
• Stratified sampling
• Cluster sampling
• Likert scales
• Reproducibility

 Statistics

• Null hypothesis
• Statistical power
• Probability distribution
• Effect size
• Poisson distribution

Research bias

• Optimism bias
• Cognitive bias
• Implicit bias
• Hawthorne effect
• Anchoring bias
• Explicit bias

Once you’ve decided on your research objectives , you need to explain them in your paper, at the end of your problem statement .

Keep your research objectives clear and concise, and use appropriate verbs to accurately convey the work that you will carry out for each one.

I will compare …

A research aim is a broad statement indicating the general purpose of your research project. It should appear in your introduction at the end of your problem statement , before your research objectives.

Research objectives are more specific than your research aim. They indicate the specific ways you’ll address the overarching aim.

A PhD, which is short for philosophiae doctor (doctor of philosophy in Latin), is the highest university degree that can be obtained. In a PhD, students spend 3–5 years writing a dissertation , which aims to make a significant, original contribution to current knowledge.

A PhD is intended to prepare students for a career as a researcher, whether that be in academia, the public sector, or the private sector.

A master’s is a 1- or 2-year graduate degree that can prepare you for a variety of careers.

All master’s involve graduate-level coursework. Some are research-intensive and intend to prepare students for further study in a PhD; these usually require their students to write a master’s thesis . Others focus on professional training for a specific career.

Critical thinking refers to the ability to evaluate information and to be aware of biases or assumptions, including your own.

Like information literacy , it involves evaluating arguments, identifying and solving problems in an objective and systematic way, and clearly communicating your ideas.

The best way to remember the difference between a research plan and a research proposal is that they have fundamentally different audiences. A research plan helps you, the researcher, organize your thoughts. On the other hand, a dissertation proposal or research proposal aims to convince others (e.g., a supervisor, a funding body, or a dissertation committee) that your research topic is relevant and worthy of being conducted.

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