Measuring the mind

a. Suppose you wanted to study the effects of exercise on mood—which of the three methods (case study, naturalistic observation, or survey) might you select and why? What would be the goal?

b. Suppose you wanted to understand the characteristics of serial killers—which method would you use, and why? What would be the goal?

c. Suppose you wanted to study the role of stress in the eating habits of college students—which method might you use then and why? Again, what would be the goal?