A literature review discusses published information in a particular subject area. A literature review combines summary and synthesis of research on a particular topic and is an examination and interpretation of the existing scholarly literature on that topic. It can be thought of as a summary of the answers to your research question.
Some of the following questions may help as you evaluate the literature on your topic:
Because literature reviews convey so much information in a condensed space, it is crucial to organize your review in a way that helps readers make sense of the studies you are reporting on. Two common approaches to literature reviews are chronological—ordering studies from oldest to most recent—and topical—grouping studies by subject or theme.