Transient nature of cooperation by pay-it-forward reciprocity

Yutaka Horita, Masanori Takezawa, Takuji Kinjo, Yo Nakawake, Naoki Masuda

Research output: Contribution to journalArticle (Academic Journal)peer-review

5 Citations (Scopus)
373 Downloads (Pure)

Abstract

Humans often forward kindness received from others to strangers, a phenomenon called the upstream or pay-it-forward indirect reciprocity. Some field observations and laboratory experiments found evidence of pay-it-forward reciprocity in which chains of cooperative acts persist in social dilemma situations. Theoretically, however, cooperation based on pay-it-forward reciprocity is not sustainable. We carried out laboratory experiments of a pay-it-forward indirect reciprocity game (i.e., chained gift-giving game) on a large scale in terms of group size and time. We found that cooperation consistent with pay-it-forward reciprocity occurred only in a first few decisions per participant and that cooperation originated from inherent pro-sociality of individuals. In contrast,
the same groups of participants showed persisting chains of cooperation in a different indirect reciprocity game in which participants earned reputation by cooperating. Our experimental results suggest that pay-it-forward reciprocity is transient and disappears when a person makes decisions repeatedly, whereas the reputation-based reciprocity is stable in the same situation.
Original languageEnglish
Article number19471
Number of pages11
JournalScientific Reports
Volume6
DOIs
Publication statusPublished - 20 Jan 2016

Keywords

  • Human beaviour
  • Social evolution

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