Suppose that a researcher recruited a group of male professors and a group of violent prisoners, and randomly assign members of each group to either (a) play competitive games, or (b) watch a documentary about golf. Based on past research regarding testosterone levels, we should expect that ____.
A) the competitive game-players and the documentary-watchers would have similar testosterone levels
B) the prisoners and the professors would have similar testosterone levels
C) the prisoners who played competitive games would have the highest testosterone levels
D) the professors who played competitive games would have the highest testosterone levels

Question

Quizplus · Accepted Answer

Past research has shown that men who engage in competitive activities, especially those that involve physical aggression, tend to have a temporary increase in testosterone levels. Therefore, we would expect that the prisoners who played competitive games (which are likely to involve physical aggression) would have the highest testosterone levels. The other options are not supported by past research and are unlikely to be true.

Suppose That a Researcher Recruited a Group of Male Professors