Projective (TAT) and direct self-report measures of achievement (n Ach) and affiliative motivation (n Aff) were compared as predictors of behavior in 2 studies with 67 and 80 Ss. For n Ach, there was no significant difference in the predictive validities of the 2 measures, but both measures together predicted better than either 1 alone. For n Aff, the projective measure was a better predictor than self-report for males, and there was an opposite tendency for females. For males who reported themselves as being revealing about themselves to others, self-report n Aff was correlated with affiliative behavior; for concealing males, the correlation was nonsignificant. Where self-reports were collected with instructions to fake responses, they were uncorrelated with behavior and with previous self-reports. There were no differences in self-reports taken in individual interviews or in a group setting.