Chimpanzees coordinate in a snowdrift game

Alejandro Sánchez-Amaro, Shona Duguid, Josep Call, Michael Tomasello

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

The snowdrift game is a model for studying social coordination in the context of competing interests. We presented pairs of chimpanzees, Pan troglodytes, with a situation in which they could either pull a weighted tray together or pull alone to obtain food. Ultimately chimpanzees should coordinate their actions because if no one pulled, they would both lose the reward. There were two experimental manipulations: the tray's weight (low or high weight condition) and the time to solve the dilemma before the rewards became inaccessible (40 s or 10 s). When the costs were high (i.e. high weight condition), chimpanzees waited longer to act. Cooperation tended to increase in frequency across sessions. The pulling effort invested in the task also became more skewed between subjects. The subjects also adjusted their behaviour by changing their pulling effort for different partners. These results demonstrate that chimpanzees can coordinate their actions in situations where there is a conflict of interest.
Original languageEnglish
Pages (from-to)61-74
Number of pages14
JournalAnimal Behaviour
Volume116
Early online date23 Apr 2016
DOIs
Publication statusPublished - Jun 2016

Keywords

  • Chimpanzees
  • Conflict
  • Cooperation
  • Coordination
  • Decision-making
  • Snowdrift game

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