Abstracts vary depending on the type of study or project being described. A few examples include:
What is an abstract?
An abstract is a brief, comprehensive summary of the contents of an article. It allows readers to survey the contents of an article quickly. A well-written abstract is the single most important paragraph in a document. Most people decide whether to read the entire article on the basis of the abstract.
According to the Publication Manual of the American Psychological Association (6th ed., p. 25-27), a good abstract should be: