Summary
American undergraduate students (N = 120) played 30 trials of the Prisoner's Dilemma game and were randomly assigned to one of six experimental conditions of 10 males and 10 females each. In conditions 1–6 the confederate was portrayed as low-status male, same-status male, high-status male, low-status female, same-status female, and high-status female, respectively. The confederate played a randomized predetermined strategy with equal numbers of cooperative and competitive responses. The results indicated a significant sex-of-subject by confederate-status interaction. Males were more cooperative in the high- than low-status conditions. Females were more cooperative in the low- than same- or high-status conditions.