Tell what research has or has not been done on the problem
and to explain or clarify the theoretical rationale of the problem.
Provides a general picture of the research topic
The rationale for incorporating the review of the literature in the research is that when you substantiate what you say, you usually substantiate it through the literature you have read. Therefore, you must document your source for your rationale and your theoretical/ conceptual framework
It is a series of references, not a bibliography. Only the literature that you have used to substantiate your problem is included in your literature review. Not everything that you have read about your problem is relevant to your research and therefore should not be included.
Only studies which are related in purpose, method, or findings to the current study should be included in the review. The discussion of such studies should be in the form of a brief critical analysis o he purposes, method of study, principal findings, and conclusions.
Clarify the interrelationship o he studies reviewed. Point out weaknesses and strengths of each study.
Point out how each of the studies reviewed relates to the problem at hand. Summarize the review and provide a transition from the past studies to the present one. The latter should be known to relate with or evolve from the earlier work.
In the text, only he last the last name of the authors are given. In the case o citation of different works by person with the same surname, initials should be included with the last names for proper identification .