The extended contact effect: Knowledge of cross-group friendships and prejudice.

The extended contact hypothesis proposes that knowledge that an in-group member has a close relationship with an out-group member can lead to more positive intergroup attitudes. Proposed mechanisms are the in-group or out-group member serving as positive exemplars and the inclusion of the out-group members group membership in the self. In Studies 1 and 2, respondents knowing an in-group member with an out-group friend had less negative attitudes toward that out-group, even controlling for dispositional variables and direct out-group friendships. Study 3, with constructed intergroup-conflict situations ( the robbers cave model), found reduced negative out-group attitudes after participants learned of cross-group friendships. Study 4, a minimal group experiment, showed less negative out-group attitudes for participants observing an apparent in-group-out-group friendship. The intergroup contact hypothesis (Allport, 1954; Williams, 1947) proposes that under a given set of circumstances contact between members of different groups reduces existing negative intergroup attitudes. Some recent research (reviewed below) suggests that the effect may be most clearly associated with the