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 member's 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 (on 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.