Motivational bases of choice in three-choice decomposed games

Subjects were presented a series of decomposed games that permitted them to select alternatives that maximize one or more of the following motivational dispositions: (1) own gain (individualism), (2) joint gain (cooperation), (3) relative gain (competition), or (4) minimization of other's gain (aggression). There were two types (cases) of games. Case 1 games permitted the S the same or a greater number of points than the other player across all alternatives; Case 2 games afforded the same or fewer points than the other player across all alternatives. It was found: (1) the motive of minimization of other's gain was negligibly reflected in Ss' choices; (2) the other motives were present and affecting Ss' choices; (3) more competitive and fewer cooperative choices occurred in Case 2 than in Case 1 games; (4) sex of subject affected choice behavior in only one game, where males tended to be more cooperative and females more individualistic; and (5) though information on choice and outcome of others was highly limited, some behavioral imitation occurred within dyads.