Functions of a literature review

A literature review basically has three functions:

• to convey to the reader what knowledge and ideas have been established on a topic, and what their strengths and weaknesses are;
• in doing so, you clearly pass the message to the reader that you are familiar with these theories & ideas. Consequently, you are somewhat more of an expert writer, or so the reader may think.
• present your ideas on the matter & your theorie(s).