The outline of literature review of this type is usually employed with topics/fields which lack previous works done before it.
As compared to other types, the literature review structure of instrumental ones focuses more on the methods used and the tools employed during the study.
Literature reviews are designed to provide an overview of sources you have explored while researching a particular topic and to demonstrate to your readers how your research fits within a larger field of study.
A literature review may consist of simply a summary of key sources, but in the social sciences, a literature review usually has an organizational pattern and combines both summary and synthesis, often within specific conceptual categories.
Employing the similar kind of review in your research might be very helpful especially if you’re working on fields which have an objective structure of a literature review.
As compared to the previous structure of a literature review, the exploratory type is more (as the term implies) “exploratory” or designed to survey previous works done in the field rather than evaluating them.
But basically, a literature review simply refers to a part of a much bigger literature and is designed to assess the student’s level of proficiency and grasp of the subject itself.
Aside from the purpose of knowing how much you know, literature review writing is primarily aimed at researching and synthesizing previous works and researches done which are related to the field that you are trying to work on.
But again, even before starting to work on your literature review, we need to look at some of the types of literature review to know what topic would fit to the type of methodology which you would be employing later on your work.
An evaluative type of literature review focuses more on collecting previous works which are related to your topic at hand and “evaluate” their findings.