"The purpose of a literature review is to help you explain how the question to be investigated fits into the larger picture and why you have approached the topic the way you have. This section of a scholarly report allows the reader to be brought up to date regarding the state of research in the field and familiarizes him or her to any contrasting perspectives and viewpoints on the topic."
How do you write a Literature Review?
"Summarize and explain what research has been done on the topic, citing the sources as you mention them. Point out the different ways researchers have treated the topic. Point out any connections between the sources especially where one source built upon prior study. Explain how this past work fits together to make your research question significant. Your literature review should present your synthesis of previous research and lay the foundation for understanding your research and appreciating its value."