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- W2891998690 abstract "Abstract In the present paper, we study how the morphological features related to developmental physiology of other participants influence the decision to cooperate in a social dilemma. To that end, we let a large sample of men play a prisoner's dilemma game, both anonymously and against a series of counterparts whose photographs were shown. We focus on three characteristics already linked to cooperative behavior and with described effects on the adult facial shape: facial fluctuating asymmetry, a frequently employed but debated proxy for developmental instability; the degree of facial dimorphism, related to levels of testosterone during puberty; and the second to fourth digit ratio, related to relative prenatal testosterone exposure. We find significantly higher cooperation rates in anonymous interactions than in the non-anonymous round. We also find that individuals are more likely to cooperate with more asymmetric counterparts, and that more asymmetric participants were less likely to believe that their counterpart would cooperate. Variables related to exposure to testosterone during development do not display any effect. We conclude by discussing how out-of-the-game rewards can explain our results." @default.
- W2891998690 created "2018-09-27" @default.
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- W2891998690 date "2019-01-01" @default.
- W2891998690 modified "2023-09-26" @default.
- W2891998690 title "The face of another: anonymity and facial symmetry influence cooperation in social dilemmas" @default.
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- W2891998690 doi "https://doi.org/10.1016/j.evolhumbehav.2018.09.002" @default.
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