Though not as technical as the research methodology and data analysis, literature review is an essential part of a research. The chapter has a number of motives to fulfill. One is the creation of a sturdy preface for research. As the references are found and listed in the chapter, and analysis of the highlighted points is done, the researcher is able to find the research gap. This, in other words, gives a valid reason for conducting research. The examiners can determine whether there is a considerable need for research in the said subject, or everything worth saying has already been said.
Another motive is defining the scope of research. This is done by identifying the focal point and stating the research questions. These questions are solved through the collection and analysis of data in the later chapters. Finding the focus and limiting the scope of research makes sure that the researcher does not deviate from the point. The research needs to be in depth; therefore all the material references, which can be found helpful for the topic and relate to the research questions need to be read, at least partially. Going through academic and reliable references will arm the scholar with the requisite knowledge to conduct the research, as well as, to answer all questions during dissertation defense.
It is advisable to consult experienced academicians and research guides while choosing references for the literature review. Prepare a comprehensive list of trustworthy references, in consultation with the guides and keep it handy before starting with dissertation writing.