Pegboards, such as those devised by Johnson O'Connor and by psychologists at Purdue

Adolescents were given an opportunity to write about their most important personal values and why they held them. Then ratings of their aggression were obtained from classmates. Results show narcissists

A) were more likely to be aggressive following this exercise. B) were less likely to be aggressive following this exercise. C) who did not engage in this writing assignment were less aggressive. D) were equally aggressive across conditions. E) are notoriously not aggressive and this exercise did not increase their aggression.

Of the following subject variables, which variable is least likely to be selected by an

researcher conducting a psychological experiment? A) Gender B) Race C) Species D) Sexual orientation