Ninety college students were randomly assigned to be high or low-power and interacted with another who consistently cooperated, consistently competed, or alternately cooperated and competed. Low-power persons were hypothesized to be motivated to take another's cognitive perspective in order to reduce their uncertainty and to help them decide how to act to increase their outcomes. Low-power persons were also expected to reciprocate the other's cooperation or competition; high-power persons were expected to be indifferent to the other's behavior. Results indicated that, compared to high power subjects, low-power subjects were more (a) interested in knowing the other's intentions, (b) cooperative, (c) attracted to the other, and (d) willing to facilitate the other's outcomes to the extent the other had acted cooperatively. Results may be interpreted as suggesting that the arrogance of the powerful and the vigilance of the less powerful may be due, in part, to unequal motives for cognitive perspective-taking and for responding to the other's cooperative gestures. (Author)