All from similar backgrounds, no behavioural/psychological problems; from same geographical location and matched for physical characteristics and abilities Robbers Cave Experiments Stage 1: Group formation Brought together in small groups Interacted exclusively with own group Engaged in co-operative tasks · Tent pitching, carrying canoes, building rope bridges clear signs of group formation (e.g., ingroup identities "Eagles" v- "Rattlers", own jargon, flags, favourite swimming holes) Stage 2: Intergroup competitive interaction Competitive games between the two groups (e.g., tug of war, baseball, treasure hunts) Trophy + individual rewards for winning team increased competition and animosity between the groups (e.g., name calling, stealing flags, raiding outgroups' cabins ingroup favouritism Robbers Cave Experiments Stage 3: Intergroup non-competitive interaction (attempts to eliminate prejudiced
geographical location and matched for physical characteristics and abilities Robbers Cave Experiments Stage 1: Group formation – Brought together in small groups – Interacted exclusively with own group – Engaged in co-operative tasks • Tent pitching, carrying canoes, building rope bridges – clear signs of group formation (e.g., ingroup identities “Eagles” –v- “Rattlers”, own jargon, flags, favourite swimming holes) Stage 2: Intergroup competitive interaction – Competitive games between the two groups (e.g., tug of war, baseball, treasure hunts) – Trophy + individual rewards for winning team – increased competition and animosity between the groups (e.g., name calling, stealing flags, raiding outgroups’ cabins – ingroup favouritism
realized that they were participants in an experiment, Sherif and his associates con- sistently engaged in artful manipulations of the camp's social environment to ob- serve the effects on group relations. What the researchers learned is that it didn't take much to bring on certain kinds of ill will. Simply separating the boys into two residence cabins was enough to stimulate a "we versus they" feeling between the groups; letting the boys assign names to the two groups (the Eagles and the Rattlers) accelerated the sense of ri- valry. The boys soon began to demean the qualities and accomplishments of the other group; however, these forms of hostility were minor compared to what oc- curred when the experimenters purposely introduced competitive activities into the groups' meetings with one another. Cabin-against-cabin treasure hunts, tugs- of-war, and athletic contests produced name-calling and confrontations. During
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