Influence: The Psychology of Persuasion · chapter 5 · id influence-c5-09-cooperation-toward-shared-goal
“Cooperation toward shared goals produces liking more effectively than mere contact -- the Robbers Cave experiment showed that intergroup hostility was only reduced when competing groups worked together on superordinate goals.”
holdsconfidence: high⚠ extracted by pipeline, re-audit pending
Receipts
Sherif (1958), Superordinate Goals in the Reduction of Intergroup Conflict, American Journal of Sociology 63(4)DOI registry: valid
Intergroup friction was reduced when groups worked on superordinate goals requiring cooperative effort. Mere contact without cooperative goals was insufficient.
Pettigrew (1998), Intergroup Contact Theory, Annual Review of Psychology 49DOI registry: valid
Meta-analysis of 515 studies confirms contact reduces prejudice (r = -0.21), with effects strongest during cooperative interaction and equal status.
This claim is a stable, citable object. If you can falsify a verdict, tell us — corrections are loud here.