Dr. Segal predicted that identical twins would cooperate more and compete less than fraternal twins when performing a joint task. She and her colleagues videotaped sets of identical and fraternal twins working together on puzzles, and then rated the children’s behavior using measures of cooperative behavior. How should she determine if her hypothesis was correct?
Jared has been trying to come up with a research question for his senior thesis. He asks his psychology instructor for recommendations. She suggests all of the following except: