The two types of literature reviews

So there are two types of review in doing a thesis, the beginning one when you craft your proposal and the ending one when you are writing your thesis! The following is cited from Kamler and Thomas (2014): "

• the scoping review. This review sets out to create an agenda for future research. It documents what is already known about a topic, and then focuses on the gaps, niches, disputes, blank and blind spots. It delineates key concepts, questions and theories in order to refine research question(s) and justify an approach to be taken.
• the traditional review. This is somewhat like a scoping review, but its argument is not to create the space for a research project. It is to position a piece of research that has already been undertaken. In essence the reader gets what's-already-known, plus the newly conducted research as the contribution. The literature is used to locate the what-we-now-know-that-we-didn't-before-and-why-this-is-important. Some texts and themes from the initial scoping review are omitted, and other things are now emphasized in order to make clear the connections and continuities, similarities and differences of the new research to what's gone before. 

 ...One justifies the research to be done, the other locates the contribution in the field of completed research... The initial text has to be modified - not just because more has been read, but because the purpose and argument are different." (p.52)

Kamler, B. and Thomson, P. (2014) Helping doctoral students write: Pedagogies for supervision (2nd Edition) Florence, KY: Routledge