Abstract (summary) - Structure

Structure

An academic abstract typically outlines four elements relevant to the completed work:

• The research focus (i.e. statement of the problem(s)/research issue(s) addressed);
• The research methods used (experimental research, case studies, questionnaires, etc.);
• The results/findings of the research; and
• The main conclusions and recommendations

It may also contain brief references, although some publications' standard style omits references from the abstract, reserving them for the article body (which, by definition, treats the same topics but in more depth).

Abstract length varies by discipline and publisher requirements. Typical length ranges from 100 to 500 words, but very rarely more than a page and occasionally just a few words. An abstract may or may not have the section title of "abstract" explicitly listed as an antecedent to content. Abstracts are typically sectioned logically as an overview of what appears in the paper, with any of the following subheadings: Background, Introduction, Objectives, Methods, Results, Conclusions. Abstracts in which these subheadings are explicitly given are often called structured abstracts by publishers. In articles that follow the IMRAD pattern (especially original research, but sometimes other article types), structured abstract style is the norm. (The "A" of abstract may be added to "IMRAD" yielding "AIMRAD".) Abstracts that comprise one paragraph (no explicit subheadings) are often called unstructured abstracts by publishers. They are often appropriate for review articles that don't follow the IMRAD pattern within their bodies.