Asking yourself these kinds of questions will assist in identifying the area within which you would be interested in working. Review your knowledge of your area. This is also a good time to make an appointment with your favorite psychology professor to discuss your knowledge of your area. Once you've identified what you know, it's important to identify what you don't know. Much of the research on this principle has been done using adults and especially college students.
Research is done to fill in holes in our knowledge.
You must know where the holes are before you can begin to do research. Maybe the questions you raised have already been answered or at least have partial answers. To find out, you must do a literature review. Make use of it to identify published research related to your topic. If not, the Psychology Department owns a video tape describing the procedure which we can arrange for you to view.