Ingroup bias, self-enhancement and group identification

Abstract

These two studies integrate self-enhancement and ingroup bias and analyse the phenomena from the social identity theory and self-categorization theory. In Study 1, the subjects (N=181) evaluated supporters of two presidential candidates on a rating scale. In Study 2, the subjects (N=302) evaluated either Finnish women's and men's positive characteristics (success condition) or negative characteristics (failure condition) which might play a role in achieving equality between the sexes in Finland. Self-evaluations were conducted on the same scale as those of ingroup and outgroup evaluations. The results showed that ingroup was evaluated more positively than outgroup (hypothesis 1) and that self was evaluated more positively than ingroup (in Study 2, however, this main effect was qualified by gender). As expected, group identification did not dilute self-enhancement (hypothesis 2) in either of the studies but strengthened self-enhancement in Study 1. Hypothesis 3 stated that self-enhancement is inversely related to ingroup favouritism but the hypothesis was only partially confirmed in that the correlation was predictably negative in Study 1 but near zero in both conditions of Study 2. Finally, contrary to hypothesis 4, it turned out that high identified group members evaluated self and ingroup more independently than lows which contradicts the idea of depersonalization. Together the results would be plausible if we rejected the unidimensional conception of interpersonal–intergroup behaviour and assumed instead that interpersonal and intergroup behaviour constitute two bipolar continua. © 1997 by John Wiley & Sons, Ltd.