How to write an APA format appendix

If you are writing a psychology essay for a class or publication, you may need to include an appendix in APA format. The appendix is ​​located at the end of the paper and contains information that supplements the text but is too clumsy or distracting to be included in the main body of the paper.

The APA format is the official writing style used by the American Psychological Association. This format specifies the structure and format of academic and professional papers.

Do you need an appendix for your paper?

Some questions about whether you should put information in the body of the paper or in the appendix:

  • Are these materials necessary for readers to understand the research? If the answer is yes, it should be in your paper and not in the appendix.
  • Does including information interrupt the flow of papers? If the answer is yes, then it is likely to appear in the appendix.
  • Will this information supplement what has already appeared in your paper? If it is, then it is a good candidate for inclusion in the appendix.

Your appendix is ​​not intended to be an information dump. Although the information in your appendix is ​​a supplement to your paper and research, it should still be useful and relevant. Only include content that helps readers gain insight and understanding, rather than confusion or unnecessary confusion.

What is included

The APA official style manual recommends that appendices should include distracting or inappropriate information in the body of the paper.

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Some examples of information you might include in the appendix include:

  • Communication (if it is directly related to your research)
  • Demographic details about participants or groups
  • Examples of participant responses
  • Extended or detailed description
  • The list is too long to be included in the body
  • Large amounts of raw data
  • List of supporting research and articles not directly cited in the text
  • Materials and instruments (if your research relies on special materials or instruments, you may need to include images and more information about how these items work or are used)
  • Questionnaire used as part of the research
  • Raw data (presented in an organized, readable format)
  • Research survey

Although the content in the appendix is ​​too cumbersome to be included in the main body of the paper, it should still be easily presented in a printed format.

The appendix should always be used as a supplement to the thesis. The body of your paper should be able to independently and completely describe your research or your argument.

The body of the paper should not depend on the content in the appendix. Instead, each appendix should serve as a supplement to the main text, adding additional (but not essential) information to provide readers with additional insight or information.

basic rules

The following are some basic APA appendix rules that need to be kept in mind when dealing with papers:

  • Your paper may have more than one appendix.
  • Each project usually has its own appendix section.
  • Start each appendix on a separate page.
  • Each appendix must have a title.
  • Use title case for titles and labels (the first letter of each word should be capitalized, and the remaining letters should be lowercase).
  • If your paper has only one appendix, just name it appendix.
  • If you have multiple appendices, each appendix should be marked as Appendix A, Appendix B, Appendix C, etc.
  • Place the appendix label at the top center of the page.
  • On the next line under the appendix label, place the center title of the appendix.
  • If you cite a source in the appendix, please include a text citation as in the body of the paper, and then include that source in your main reference section.
  • Each appendix may contain headings, subheadings, diagrams and tables.
  • Each figure or table in the appendix should contain a short but explanatory title, which should be in italics.
  • If you want to cite your appendix in the main text of the paper, please add parentheses in the main text. For example, you would write (see Appendix A).


The APA appendix should follow the general rules on how to format the text. These rules specify what font and font size you should use, the size of the page margins, and the spacing of the text.

Some APA format guidelines you need to follow:

  • Use consistent fonts, such as 12-point Times New Roman or 11-point Calibri
  • Double line your text
  • All paragraphs should be indented on the first line
  • Page numbers should be continuous with the rest of the paper

Data Display

When presenting information in the appendix, use a logical layout for any data display (such as tables or graphs). All tables and figures should be marked with the words “table” or “figure” (without quotation marks) and the letter of the appendix, and then numbered.

For example, Table A1 will be the first table in Appendix A. The data display should appear in the appendix in the same order in which they first appeared in the main body of the paper.

In addition to following the basic APA format rules, you should also check if there are other guidelines to follow. Individual teachers or publications may have their own specific requirements.

Where to include the appendix

If your paper does require an appendix, it should be the last few pages of your completed paper. Papers in APA format are usually structured as follows:

Your essay may not include all these parts. However, your paper can at least consist of a title page, abstract, text, and reference parts. In addition, if your paper does not contain tables, graphs, or footnotes, the appendix will follow the references.

Do not include appendices that contain information not mentioned in the text.

Very good sentence

Writing a paper for class or publication requires a lot of research, but you should pay special attention to your APA format. Every part of the paper, including the appendix, needs to follow the rules and guidelines provided in the American Psychological Association style manual.