The effect of conflict history on cooperation within and between groups

Evidence from a laboratory experiment

Gonne Beekman, Stephen L. Cheung*, Ian Levely

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

6 Citations (Scopus)


We study cooperation within and between groups in the laboratory, comparing treatments in which two groups have previously been in conflict with one another, in conflict with a different group, or not previously exposed to conflict. We model conflict using an inter-group Tullock contest, and measure its effects upon cooperation using a multi-level public good game. We find that conflict increases cooperation within groups, while decreasing cooperation between groups. Moreover, we find that an increase in the gains from cooperation only increases cooperation between groups when the two groups have not previously interacted.

Original languageEnglish
Pages (from-to)168-183
JournalJournal of Economic Psychology
Early online date10 Feb 2017
Publication statusPublished - Dec 2017



  • 3020
  • Group identity
  • Inter-group conflict
  • Multi-level public good experiment
  • Tullock contest
  • Within- and between-group cooperation

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