Select three peer previewed studies that you will summarize in Unit 4.What is a Literature ReviewThe purpose of a literature review is to express to your reader the knowledge and ideas that have been established on a topic. Your literature review should describe the strengths and weaknesses in the literature on the topic you have chosen. The literature review must be defined by a guiding concept (e.g., your research question). The literature review is NOT just a descriptive list of the material available, or a regurgitation of the summaries will write in preparing your research. A literature review must do these things:Be organized around and related directly to your research questionSynthesize and organize resultsIdentify trends or findingsIdentify areas of disagreementFormulate questions that need further research