structural:reformatting, information:filtering
The contact hypothesis

The contact hypothesis predicts that prejudice can only be reduced when in-group and out-group members are brought together. In particular, there are six conditions that must be met to reduce prejudice, as were cultivated in Elliot Aronson 's "jigsaw" teaching technique. First, the in- and out-groups must have a degree of mutual interdependence. Second, both groups need to share a common goal. Third, the two groups must have equal status. Fourth, there must be frequent opportunities for informal and interpersonal contact between groups. Fifth, there should be multiple contacts between the in- and the out-groups. Finally, social norms of equality must exist and be present to foster prejudice reduction.