That is to say, “what exactly is of interest and why” (Cronin, Ryan, & Coughlan, 2008, p. 38)
Keep in mind: Your research focus may evolve as you start looking for material.
Do a Literature Scan to assess the current state of the field.
Attend conferences to learn from others.
Brainstorm by yourself or with peers
Develop a Concept Map and let the ideas flow!