"You must build a case for what is known about your topic and determine how this knowledge addresses the research question." – Machi and McEvoy, 2009
You need to develop and intertwine two arguments in your literature review:
- Argument of discovery - explain the current state of knowledge that is the context for your research interest
- Argument of advocacy - evaluate the knowledge gained in discovery to support your research question(s)
Remember this two-pronged approach as you read: discovery will come from surveying the literature and advocacy from evaluating it. You should be able to answer the questions:
- “What do we know about the subject of our study?”
- “Based on what we know, what conclusions can we draw about the research question?”
Also keep in mind that the evidence for your arguments is selective. You don't want to include every source that's related to your research question, just the best and most relevant sources. Let your refined topic be your guide to which sources to eventually include in your literature review.