Z:gnu-www-ja-frank--1e0f7f-Our subjects met in groups of/en

Our subjects met in groups of three and each was told that he would play the game once with each of the other two subjects. The payoff matrix, shown in Table 1, was the same for each play of the game. Subjects were told that the games would be played for real money, and that none of the players would learn how their partners had responded in each play of the game. (More below on how confidentiality was maintained.)