Multigame contact and cooperation

Joao Montez, Laferrière, Vincent, Christian Thoeni and Catherine Roux
Authors registered in the RePEc Author Service: Christian Thöni

No 16349, CEPR Discussion Papers from C.E.P.R. Discussion Papers

Abstract: Many strategic situations involve players repeatedly interacting across multiple games. While there is an extensive experimental literature on the determinants of cooperation in indefinitely repeated games, there is no evidence on how multigame contact affects behavior in these games. In theory, multigame contact should foster cooperation by improving players' ability to punish. We study the effect of multigame contact on cooperation in two preregistered laboratory experiments, where the main treatment consists of subjects playing a pair of indefinitely repeated prisoner's dilemmas with either the same partner or with different partners, i.e., respectively with and without multigame contact. In contrast to the theoretical predictions, we find no evidence that multigame contact increases average cooperation rates. Yet, and now in line with theory, we observe that multigame contact has systematic effects on behavior: subjects often link the strategies in the two games when they play with the same partner. Such linkage turns out to be a double-edged sword: while it helps subjects reaching cooperation in both games, it makes cooperation in only one of the games less likely.

Keywords: Cooperation; Repeated games; Prisoner’s dilemma; Multigame contact; Experiment (search for similar items in EconPapers)
JEL-codes: C72 C73 C91 C92 L41 (search for similar items in EconPapers)
Date: 2021-07
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