literature review with apa

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Literature Review: Conducting & Writing

• Sample Literature Reviews
• Steps for Conducting a Lit Review
• Finding "The Literature"
• Organizing/Writing
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Sample Lit Reviews from Communication Arts

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• Literature Review Sample 1
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1. Choose a topic. Define your research question.

Your literature review should be guided by your central research question.  The literature represents background and research developments related to a specific research question, interpreted and analyzed by you in a synthesized way.

• Make sure your research question is not too broad or too narrow.  Is it manageable?
• Begin writing down terms that are related to your question. These will be useful for searches later.
• If you have the opportunity, discuss your topic with your professor and your class mates.

2. Decide on the scope of your review

How many studies do you need to look at? How comprehensive should it be? How many years should it cover? 

• This may depend on your assignment.  How many sources does the assignment require?

3. Select the databases you will use to conduct your searches.

Make a list of the databases you will search. 

Where to find databases:

• use the tabs on this guide
• Find other databases in the Nursing Information Resources web page
• More on the Medical Library web page
• ... and more on the Yale University Library web page

4. Conduct your searches to find the evidence. Keep track of your searches.

• Use the key words in your question, as well as synonyms for those words, as terms in your search. Use the database tutorials for help.
• Save the searches in the databases. This saves time when you want to redo, or modify, the searches. It is also helpful to use as a guide is the searches are not finding any useful results.
• Review the abstracts of research studies carefully. This will save you time.
• Use the bibliographies and references of research studies you find to locate others.
• Check with your professor, or a subject expert in the field, if you are missing any key works in the field.
• Ask your librarian for help at any time.
• Use a citation manager, such as EndNote as the repository for your citations. See the EndNote tutorials for help.

Review the literature

Some questions to help you analyze the research:

• What was the research question of the study you are reviewing? What were the authors trying to discover?
• Was the research funded by a source that could influence the findings?
• What were the research methodologies? Analyze its literature review, the samples and variables used, the results, and the conclusions.
• Does the research seem to be complete? Could it have been conducted more soundly? What further questions does it raise?
• If there are conflicting studies, why do you think that is?
• How are the authors viewed in the field? Has this study been cited? If so, how has it been analyzed?

Tips: 

• Review the abstracts carefully.  
• Keep careful notes so that you may track your thought processes during the research process.
• Create a matrix of the studies for easy analysis, and synthesis, across all of the studies.
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How to Write a Literature Review: Writing a Literature Review in APA Format

• Writing a Literature Review in APA Format
• Chicago/Turabian Citation Style
• Primary and Secondary Sources
• Basic Research Strategies
• Evaluating Sources
• Using the Library's Ebooks
• Using the Library's Catalog
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Writing a Literature Review in APA

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How to Write a Literature Review

• Critical analysis
• Sample Literature Reviews
• Scaffold examples for organising Literature Reviews
• Writing an Abstract
• Creating Appendices
• APA Reference Guide
• Library Resources
• Guide References

Reference Guide

APA 7th edition Reference Guide  

St Patrick's College uses APA 7th edition to reference information sources. There are some subjects where APA Referencing is not used, so it is important to clarify with your teacher regarding the reference style required.    

This guide provides the rules for the  APA  7th Edition Reference style  and its application across a range of source material, including print, online, audio/visual, images and graphs, social media and personal communication. Each source has its own page within the guide, with in-text citation and reference listing examples.

The Library Team are available to help you get your head around referencing, and can check your reference lists prior to assignment submission. A Library Helpdesk ticket needs to be raised to action this request.

The APA Reference Guide can be found on the Library website:

The APA Reference Guide can also be found in every Research Guide, as per highlighted area below:

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There are different methods to organize and present the materials collected for the literature review.

The list below goes over different organizational frameworks that can be used to present the research conducted. If you are not sure what method to use, check with your professor.​

• Chronological:  The chronological framework organizes the literature in the order in which they are published. For example, if you were writing about a specific teaching method, you would begin with the materials that first introduced the method. You would then follow with case studies applying that method. You would conclude your review with contemporary papers that may even give a historical perspective on the method from when it was first conceived and how it is applied today.
• by publication:  This framework is useful if you notice a series of articles that are written in response to one another that are all within one publication. You still follow chronological order, but you break it so that the articles responding to one another are grouped together.
• by trend:  This framework looks at specific trends and organizes them chronologically. For example, if you were looking at the history of assistive technology in helping students with disabilities, you may organize the reviews by what disability was being treated, and then present the history of using assistive technology to treat that particular disability in chronological order.
• Thematic:  The thematic framework is similar to organizing by trend, except that you are not organizing the reviews in the order that they were published. This does not mean that you do not consider the timeline for how a topic or issue developed, but that you will not focus on organizing your reviews chronologically. Rather, the emphasis will be on the themes you find within the topic or issue — such as commonalities — and from there you fit your reviews into the separate ideas in which they fit. For example, if the review topic was arts-based research, your review may focus on different ways artistic inquiry was used to understand the creative process, focusing then on the concepts rather than the development.
• Methodological:  The method or practice applied in a case study can be the basis for organizing a literature review. This framework focuses on how the author(s) or the person(s) administering a study applied similar methods as another study. As a result, the types of literature in a literature review that applies the methodological framework tends to review similar materials. For example, if you reviewed methods used to treat post traumatic stress syndrome, the review would organize the studies by the methods used to treat the patients and not the order that the studies were published.

Note: After choosing the organizational framework for the literature review, it should be easier to write because you should have a clear idea of what sections you need to include in the paper. For example, a chronological review will have subsections for each vital time period. A thematic review will have subtopics based upon factors that relate to the theme or issue.

In some cases the literature does not quite fit the framework you have chosen. In this case, you should determine where it makes sense to place the literature and confirm this choice with your professor.

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What is a Literature Review? How to Write It (with Examples)

A literature review is a critical analysis and synthesis of existing research on a particular topic. It provides an overview of the current state of knowledge, identifies gaps, and highlights key findings in the literature. 1 The purpose of a literature review is to situate your own research within the context of existing scholarship, demonstrating your understanding of the topic and showing how your work contributes to the ongoing conversation in the field. Learning how to write a literature review is a critical tool for successful research. Your ability to summarize and synthesize prior research pertaining to a certain topic demonstrates your grasp on the topic of study, and assists in the learning process. 

Table of Contents

• What is the purpose of literature review? 
• a. Habitat Loss and Species Extinction: 
• b. Range Shifts and Phenological Changes: 
• c. Ocean Acidification and Coral Reefs: 
• d. Adaptive Strategies and Conservation Efforts: 
• How to write a good literature review 
• Choose a Topic and Define the Research Question: 
• Decide on the Scope of Your Review: 
• Select Databases for Searches: 
• Conduct Searches and Keep Track: 
• Review the Literature: 
• Organize and Write Your Literature Review: 
• Frequently asked questions 

What is a literature review?

A well-conducted literature review demonstrates the researcher’s familiarity with the existing literature, establishes the context for their own research, and contributes to scholarly conversations on the topic. One of the purposes of a literature review is also to help researchers avoid duplicating previous work and ensure that their research is informed by and builds upon the existing body of knowledge.

What is the purpose of literature review?

A literature review serves several important purposes within academic and research contexts. Here are some key objectives and functions of a literature review: 2  

• Contextualizing the Research Problem: The literature review provides a background and context for the research problem under investigation. It helps to situate the study within the existing body of knowledge. 
• Identifying Gaps in Knowledge: By identifying gaps, contradictions, or areas requiring further research, the researcher can shape the research question and justify the significance of the study. This is crucial for ensuring that the new research contributes something novel to the field. 
• Understanding Theoretical and Conceptual Frameworks: Literature reviews help researchers gain an understanding of the theoretical and conceptual frameworks used in previous studies. This aids in the development of a theoretical framework for the current research. 
• Providing Methodological Insights: Another purpose of literature reviews is that it allows researchers to learn about the methodologies employed in previous studies. This can help in choosing appropriate research methods for the current study and avoiding pitfalls that others may have encountered. 
• Establishing Credibility: A well-conducted literature review demonstrates the researcher’s familiarity with existing scholarship, establishing their credibility and expertise in the field. It also helps in building a solid foundation for the new research. 
• Informing Hypotheses or Research Questions: The literature review guides the formulation of hypotheses or research questions by highlighting relevant findings and areas of uncertainty in existing literature. 

Literature review example

Let’s delve deeper with a literature review example: Let’s say your literature review is about the impact of climate change on biodiversity. You might format your literature review into sections such as the effects of climate change on habitat loss and species extinction, phenological changes, and marine biodiversity. Each section would then summarize and analyze relevant studies in those areas, highlighting key findings and identifying gaps in the research. The review would conclude by emphasizing the need for further research on specific aspects of the relationship between climate change and biodiversity. The following literature review template provides a glimpse into the recommended literature review structure and content, demonstrating how research findings are organized around specific themes within a broader topic. 

Literature Review on Climate Change Impacts on Biodiversity:

Climate change is a global phenomenon with far-reaching consequences, including significant impacts on biodiversity. This literature review synthesizes key findings from various studies: 

a. Habitat Loss and Species Extinction:

Climate change-induced alterations in temperature and precipitation patterns contribute to habitat loss, affecting numerous species (Thomas et al., 2004). The review discusses how these changes increase the risk of extinction, particularly for species with specific habitat requirements. 

b. Range Shifts and Phenological Changes:

Observations of range shifts and changes in the timing of biological events (phenology) are documented in response to changing climatic conditions (Parmesan & Yohe, 2003). These shifts affect ecosystems and may lead to mismatches between species and their resources. 

c. Ocean Acidification and Coral Reefs:

The review explores the impact of climate change on marine biodiversity, emphasizing ocean acidification’s threat to coral reefs (Hoegh-Guldberg et al., 2007). Changes in pH levels negatively affect coral calcification, disrupting the delicate balance of marine ecosystems. 

d. Adaptive Strategies and Conservation Efforts:

Recognizing the urgency of the situation, the literature review discusses various adaptive strategies adopted by species and conservation efforts aimed at mitigating the impacts of climate change on biodiversity (Hannah et al., 2007). It emphasizes the importance of interdisciplinary approaches for effective conservation planning. 

How to write a good literature review

Writing a literature review involves summarizing and synthesizing existing research on a particular topic. A good literature review format should include the following elements. 

Introduction: The introduction sets the stage for your literature review, providing context and introducing the main focus of your review. 

• Opening Statement: Begin with a general statement about the broader topic and its significance in the field. 
• Scope and Purpose: Clearly define the scope of your literature review. Explain the specific research question or objective you aim to address. 
• Organizational Framework: Briefly outline the structure of your literature review, indicating how you will categorize and discuss the existing research. 
• Significance of the Study: Highlight why your literature review is important and how it contributes to the understanding of the chosen topic. 
• Thesis Statement: Conclude the introduction with a concise thesis statement that outlines the main argument or perspective you will develop in the body of the literature review. 

Body: The body of the literature review is where you provide a comprehensive analysis of existing literature, grouping studies based on themes, methodologies, or other relevant criteria. 

• Organize by Theme or Concept: Group studies that share common themes, concepts, or methodologies. Discuss each theme or concept in detail, summarizing key findings and identifying gaps or areas of disagreement. 
• Critical Analysis: Evaluate the strengths and weaknesses of each study. Discuss the methodologies used, the quality of evidence, and the overall contribution of each work to the understanding of the topic. 
• Synthesis of Findings: Synthesize the information from different studies to highlight trends, patterns, or areas of consensus in the literature. 
• Identification of Gaps: Discuss any gaps or limitations in the existing research and explain how your review contributes to filling these gaps. 
• Transition between Sections: Provide smooth transitions between different themes or concepts to maintain the flow of your literature review. 

Conclusion: The conclusion of your literature review should summarize the main findings, highlight the contributions of the review, and suggest avenues for future research. 

• Summary of Key Findings: Recap the main findings from the literature and restate how they contribute to your research question or objective. 
• Contributions to the Field: Discuss the overall contribution of your literature review to the existing knowledge in the field. 
• Implications and Applications: Explore the practical implications of the findings and suggest how they might impact future research or practice. 
• Recommendations for Future Research: Identify areas that require further investigation and propose potential directions for future research in the field. 
• Final Thoughts: Conclude with a final reflection on the importance of your literature review and its relevance to the broader academic community. 

Conducting a literature review

Conducting a literature review is an essential step in research that involves reviewing and analyzing existing literature on a specific topic. It’s important to know how to do a literature review effectively, so here are the steps to follow: 1  

Choose a Topic and Define the Research Question:

• Select a topic that is relevant to your field of study. 
• Clearly define your research question or objective. Determine what specific aspect of the topic do you want to explore? 

Decide on the Scope of Your Review:

• Determine the timeframe for your literature review. Are you focusing on recent developments, or do you want a historical overview? 
• Consider the geographical scope. Is your review global, or are you focusing on a specific region? 
• Define the inclusion and exclusion criteria. What types of sources will you include? Are there specific types of studies or publications you will exclude? 

Select Databases for Searches:

• Identify relevant databases for your field. Examples include PubMed, IEEE Xplore, Scopus, Web of Science, and Google Scholar. 
• Consider searching in library catalogs, institutional repositories, and specialized databases related to your topic. 

Conduct Searches and Keep Track:

• Develop a systematic search strategy using keywords, Boolean operators (AND, OR, NOT), and other search techniques. 
• Record and document your search strategy for transparency and replicability. 
• Keep track of the articles, including publication details, abstracts, and links. Use citation management tools like EndNote, Zotero, or Mendeley to organize your references. 

Review the Literature:

• Evaluate the relevance and quality of each source. Consider the methodology, sample size, and results of studies. 
• Organize the literature by themes or key concepts. Identify patterns, trends, and gaps in the existing research. 
• Summarize key findings and arguments from each source. Compare and contrast different perspectives. 
• Identify areas where there is a consensus in the literature and where there are conflicting opinions. 
• Provide critical analysis and synthesis of the literature. What are the strengths and weaknesses of existing research? 

Organize and Write Your Literature Review:

• Literature review outline should be based on themes, chronological order, or methodological approaches. 
• Write a clear and coherent narrative that synthesizes the information gathered. 
• Use proper citations for each source and ensure consistency in your citation style (APA, MLA, Chicago, etc.). 
• Conclude your literature review by summarizing key findings, identifying gaps, and suggesting areas for future research. 

The literature review sample and detailed advice on writing and conducting a review will help you produce a well-structured report. But remember that a literature review is an ongoing process, and it may be necessary to revisit and update it as your research progresses. 

Frequently asked questions

A literature review is a critical and comprehensive analysis of existing literature (published and unpublished works) on a specific topic or research question and provides a synthesis of the current state of knowledge in a particular field. A well-conducted literature review is crucial for researchers to build upon existing knowledge, avoid duplication of efforts, and contribute to the advancement of their field. It also helps researchers situate their work within a broader context and facilitates the development of a sound theoretical and conceptual framework for their studies.

Literature review is a crucial component of research writing, providing a solid background for a research paper’s investigation. The aim is to keep professionals up to date by providing an understanding of ongoing developments within a specific field, including research methods, and experimental techniques used in that field, and present that knowledge in the form of a written report. Also, the depth and breadth of the literature review emphasizes the credibility of the scholar in his or her field.  

Before writing a literature review, it’s essential to undertake several preparatory steps to ensure that your review is well-researched, organized, and focused. This includes choosing a topic of general interest to you and doing exploratory research on that topic, writing an annotated bibliography, and noting major points, especially those that relate to the position you have taken on the topic. 

Literature reviews and academic research papers are essential components of scholarly work but serve different purposes within the academic realm. 3 A literature review aims to provide a foundation for understanding the current state of research on a particular topic, identify gaps or controversies, and lay the groundwork for future research. Therefore, it draws heavily from existing academic sources, including books, journal articles, and other scholarly publications. In contrast, an academic research paper aims to present new knowledge, contribute to the academic discourse, and advance the understanding of a specific research question. Therefore, it involves a mix of existing literature (in the introduction and literature review sections) and original data or findings obtained through research methods. 

Literature reviews are essential components of academic and research papers, and various strategies can be employed to conduct them effectively. If you want to know how to write a literature review for a research paper, here are four common approaches that are often used by researchers.  Chronological Review: This strategy involves organizing the literature based on the chronological order of publication. It helps to trace the development of a topic over time, showing how ideas, theories, and research have evolved.  Thematic Review: Thematic reviews focus on identifying and analyzing themes or topics that cut across different studies. Instead of organizing the literature chronologically, it is grouped by key themes or concepts, allowing for a comprehensive exploration of various aspects of the topic.  Methodological Review: This strategy involves organizing the literature based on the research methods employed in different studies. It helps to highlight the strengths and weaknesses of various methodologies and allows the reader to evaluate the reliability and validity of the research findings.  Theoretical Review: A theoretical review examines the literature based on the theoretical frameworks used in different studies. This approach helps to identify the key theories that have been applied to the topic and assess their contributions to the understanding of the subject.  It’s important to note that these strategies are not mutually exclusive, and a literature review may combine elements of more than one approach. The choice of strategy depends on the research question, the nature of the literature available, and the goals of the review. Additionally, other strategies, such as integrative reviews or systematic reviews, may be employed depending on the specific requirements of the research.

The literature review format can vary depending on the specific publication guidelines. However, there are some common elements and structures that are often followed. Here is a general guideline for the format of a literature review:  Introduction:   Provide an overview of the topic.  Define the scope and purpose of the literature review.  State the research question or objective.  Body:   Organize the literature by themes, concepts, or chronology.  Critically analyze and evaluate each source.  Discuss the strengths and weaknesses of the studies.  Highlight any methodological limitations or biases.  Identify patterns, connections, or contradictions in the existing research.  Conclusion:   Summarize the key points discussed in the literature review.  Highlight the research gap.  Address the research question or objective stated in the introduction.  Highlight the contributions of the review and suggest directions for future research.

Both annotated bibliographies and literature reviews involve the examination of scholarly sources. While annotated bibliographies focus on individual sources with brief annotations, literature reviews provide a more in-depth, integrated, and comprehensive analysis of existing literature on a specific topic. The key differences are as follows: 

References 

• Denney, A. S., & Tewksbury, R. (2013). How to write a literature review.  Journal of criminal justice education ,  24 (2), 218-234. 
• Pan, M. L. (2016).  Preparing literature reviews: Qualitative and quantitative approaches . Taylor & Francis. 
• Cantero, C. (2019). How to write a literature review.  San José State University Writing Center . 

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The 2024 APA Annual Meeting: Saturday, May 4

Here are highlights from the first day of this year’s APA Annual Meeting.

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CONFERENCE REPORTER

The 2024 American Psychiatric Association (APA) Annual Meeting is in full swing. Here are some highlights from Saturday, May 4, in Psychiatric Times ®.

ADHD, Stimulant Use, and Failure to Thrive in Pediatric Patients

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Addressing attention-deficit/hyperactivity disorder (ADHD) while ensuring the proper physical development of child and adolescent patients can be a challenge. A holistic, multidisciplinary approach to managing failure to thrive (FTT)—a condition in which children do not grow at a rate for their age—is critical. This includes a psychiatric consultation to address comorbidities.

The poster, “Stimulant Use in Pediatric ADHD: Balancing Behavioral Management and Physical Development - A Case Study and Literature Review,” presented at the 2024 American Psychiatric Association Annual Meeting, reviewed the current literature on the relationship between stimulant use and FTT. To demonstrate findings, it presented a new case involving an adolescent patient with comorbid ADHD and conduct disorder. Continue Reading

A Protocol to Assist With Cannabis Use Disorder

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Cannabis is the most widely used illicit drug. Approximately 19.5% of users develop a cannabis use disorder (CUD), which, as of 2021, equates to about 16.3 million individuals. Unfortunately, few of those seeking treatment for CUD can achieve a substantial reduction or abstain from cannabis use. Furthermore, cannabis withdrawal syndrome impacts about half of those who use regularly.

Presenters of, “Motivational Enhancement and Cannabis Use: Implementing a Brief Cannabis Cessation Protocol,” one of the starting sessions of the 2024 American Psychiatric Association Annual Meeting, sought to help attendees identify barriers to improvement, engagement, and change in CUD, as well as share their brief cannabis cessation protocol to increase patient motivation for change. Continue Reading

The Failed Concept of Treatment Resistance

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According to some estimates, about 20% to 60% of psychiatric diagnoses eventually become labeled “treatment resistant,” yet psychiatry seems to lack a consensus on what “treatment resistance” means, including clear criteria, H. Paul Putman III, MD, told  Psychiatric Times  in an exclusive interview.

Putman, a Distinguished Life Fellow of the American Psychiatric Association and a Fellow and former Laughlin Fellow of the American College of Psychiatrists (ACP), led the session “Encountering Treatment Resistance and Finding Solutions” at the 2024 American Psychiatric Association Annual Meeting in New York City, May 3-8, 2024.1 In his presentation, he explored the concept of treatment resistance and how these cases may actually be a result of treatment failure. The goal, he noted, is to help patients, including those whose initial outcomes are disappointing. Continue Reading

Are you at the 2024 APA Annual Meeting? Stop by and say hello to the  Psychiatric Times editorial team and Editor-in-Chief John J. Miller, MD, in Booth #1417!

See more coverage from the 2024 APA Annual Meeting in Psychiatric Times here . And be sure to stay up-to-date by subscribing to the Psychiatric Times E-newsletter .

Do you have a comment on any of these or other articles? Have a good idea for an article and want to write? Interested in sharing your perspectives? Write to us at [email protected] .

Tardive Dyskinesia in US Antipsychotic Users

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Setting the Standard for Sports Psychiatry

5 Personality Traits of Olympic Athletes

Impacting Policies, Practices, and Other Physicians

Building Psychiatric Administrators and Leaders for the the Future

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Types of APA Papers

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Note:  This page reflects APA 6, which is now out of date. It will remain online until 2021, but will not be updated. There is currently no equivalent 7th edition page, but we're working on one. Thank you for your patience. Here is a link to our APA 7 "General Format" page .

There are two common types of papers written in fields using APA Style: the literature review and the experimental report (also known as a "research report"). Each has unique requirements concerning the sections that must be included in the paper.

Literature review

A literature review is a critical summary of what the scientific literature says about your specific topic or question. Often student research in APA fields falls into this category. Your professor might ask you to write this kind of paper to demonstrate your familiarity with work in the field pertinent to the research you hope to conduct. 

While the APA Publication Manual does not require a specific order for a literature review, a good literature review typically contains the following components:

• Introduction
• Thesis statement
• Summary and synthesis of sources
• List of references

Some instructors may also want you to write an abstract for a literature review, so be sure to check with them when given an assignment. Also, the length of a literature review and the required number of sources will vary based on course and instructor preferences.

NOTE:  A literature review and an annotated bibliography are  not  synonymous. While both types of writing involve examining sources, the literature review seeks to synthesize the information and draw connections between sources. If you are asked to write an annotated bibliography, you should consult the  Publication Manual of the American Psychological Association  for the APA Format for Annotated Bibliographies.

Experimental/Research report

In many of the social sciences, you will be asked to design and conduct your own experimental research. If so, you will need to write up your paper using a structure that is more complex than that used for just a literature review. We have a complete resource devoted to writing an experimental report in the field of psychology  here .

This structure follows the scientific method, but it also makes your paper easier to follow by providing those familiar cues that help your reader efficiently scan your information for:

• Why the topic is important (covered in your introduction)
• What the problem is (also covered in your introduction)
• What you did to try to solve the problem (covered in your methods section)
• What you found (covered in your results section)
• What you think your findings mean (covered in your discussion section)

Thus an experimental report typically includes the following sections.

• Multiple experiments (if you conduct more than one)
• Appendices (if necessary)
• Tables and/or figures (if necessary)

Make sure to check the guidelines for your assignment or any guidelines that have been given to you by an editor of a journal before you submit a manuscript containing the sections listed above.

As with the literature review, the length of this report may vary by course or by journal, but most often it will be determined by the scope of the research conducted.

Other papers

If you are writing a paper that fits neither of these categories, follow the guidelines about  General Format , consult your instructor, or look up advice in the  Publication Manual of the American Psychological Association .

When submitting a manuscript to a journal, make sure you follow the guidelines described in the submission policies of that publication, and include as many sections as you think are applicable to presenting your material. Remember to keep your audience in mind as you are making this decision. If certain information is particularly pertinent for conveying your research, then ensure that there is a section of your paper that adequately addresses that information.