To investigate relations between groups, specifically to see whether strangers caught together into a group with common goals will form a close group, and to see whether two such groups brought into contact and competition will become hostile towards each other.
22 12-year-old middle-class, protestant, American, boys.
1. In-group formation:
5 days group tasks took place to allow the two groups to bond in their groups, they were each given a name, the eagles and the rattlers.
2. In-group relations, The friction phase: