"A literature review discusses published information in a particular subject area, and sometimes information in a particular subject area within a certain time period.
A literature review can be just a simple summary of the sources, but it usually has an organizational pattern and combines both summary and synthesis. A summary is a recap of the important information of the source, but a synthesis is a re-organization, or a reshuffling, of that information. It might give a new interpretation of old material or combine new with old interpretations. Or it might trace the intellectual progression of the field, including major debates. And depending on the situation, the literature review may evaluate the sources and advise the reader on the most pertinent or relevant.
Ten Simple Rules for Writing a Literature Review - This PLoS One article itemizes the steps in the lit review process.
Drafting the Literature Review: Texas Tech University Health Sciences Center's LibGuide for drafting and structuring a literature review.
Literature Reviews: Handout created by the Writing Center at the University of North Carolina at Chapel Hill
When a literature review stands alone, it is reviewing what is known about the topic, analyzed for trends, controversial issues, and what still needs to be studied to better understand the topic at hand. A stand-alone literature review can be as short as a few pages or may be more extensive with long bibliographies for in-depth reviews.
Literature reviews can be used as part of dissertations, theses, research reports, and scholarly journal articles. They generally discuss what has been done before and how the research being introduced in this document fills a gap in the field's knowledge and why it is an important.
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