3.1 The purpose of a literature review
Understanding existing research is at the core of your study. A good literature review is important because it enables you to understand the existing work in your chosen topic as well as explaining concepts, approaches and ideas relevant to that topic.
The literature review is also essential as it will enable you to identify an appropriate research method. Your research method, and needs, can only be established in the light of a review of existing knowledge.
Your literature review is regarded as secondary research. The research process is an ongoing one, so your literature review is never really finished or entirely up to date as reading and understanding the existing literature is a constant part of being a researcher; professionally it is an obligation.