1_ Outcomes of a positive activity intervention in addressing depression

2_ Cognitive, behavioral and emotional aspects of depression in young adults

3_ Psychosocial risks factors associated with depression

4_ Internet based depression interventions addressing depression

Hope some of these ideas may help.

With research proposal, survey method may be best. When doing this assignment you are NOT doing the "experiment", you will solely be guiding and explaining what may happen. If you are up to the task, you may ask more questions. #KimWoods