Group Cooperation under Uncertainty
نویسندگان
چکیده
Previous research has shown an ‘interindividual-intergroup discontinuity effect’: intergroup interactions generally lead to less cooperative outcomes than interindividual interactions. We replicated the discontinuity effect in the deterministic prisoner’s dilemma, but we found that groups were more cooperative than individuals in a stochastic version of the game. Three major factors, greed, fear, and persuasion power that underlie the usual discontinuity effect, were reduced in the stochastic environment. Two group mechanisms were responsible for the reversed discontinuity effect: the motivation to avoid guilt and blame when making decisions that affect other’s welfare, and the social pressure to conform to certain norms when one is in a group setting.
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