Hypothesized that heightening ingroup cohesion would increase discrimination toward an
outgroup. This prediction was not supported. Instead, it was found that for the most part, only …

Several studies have found that the mere categorization of persons into groups is sufficient
to promote intergroup discrimination. Out-group members may be convenient targets of bias …

Experimental research on intergroup discrimination in favor of one's own group is reviewed
in terms of the basis of differentiation between in-group and out-group and in terms of the …

Four experiments addressed the different forms and functions of in-group bias in different
contexts. The authors proposed 2 functions: an identity-expressive function and an …

Abstract 100 undergraduates were arbitrarily categorized into 2 groups and informed that
ingroup and outgroup members were either similar or dissimilar to themselves on attitudes …

Two experiments were conducted to illuminate the role of out-group similarity in intergroup
behavior. A pilot study provided a “trivial” and an “important” basis of similarity for the subject …

Explored the hypothesis that in-group members perceive their own group as more
variegated and complex than do out-group members (the out-group homogeneity principle) …

Two studies report a test of aspects of Brewer and Miller's (1984) model of the effects of
cooperative contact on intergroup discrimination. Study 1 tested the hypothesis that …

The present research examined factors that moderate and mediate the reduction of
intergroup bias. Two 3-person laboratory groups, which had first worked separately on a …

Out-groups are generally seen as less variable or diverse than in-groups. Two explanations
have been advanced for this out-group homogeneity effect. They differ in whether differential …