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Why we sometimes punish the innocent: The role of group entitativity in collective punishment.

ABSTRACT: Because punishments are expected to give offenders what they deserve proportionally to the severity of their offenses, the punishment of an entire group because of the misdeed of a few of its members is generally considered as unfair. Group entitativity might increase support for such collective punishment, because members of highly entitative groups are perceived as more similar and interchangeable. We designed three experiments comparing support for third-party collective punishment of low versus high entitative groups. As comparison base-rate, we included conditions in which participants punish an individual wrongdoer (Experiments 1 & 2). Results show that although support for individual punishment is higher than support for collective punishment, this difference was reduced (Experiment 1) or absent (Experiment 2) when the group was highly entitative. Experiment 3 replicated the increasing effect of group entitativity on support for collective punishment. We conclude that group entitativity increases the likelihood of an entire group being treated as a single unit, facilitating collective punishment when a few group members commit an offense.

SUBMITTER: Pereira A

PROVIDER: S-EPMC5933726 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature

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Why we sometimes punish the innocent: The role of group entitativity in collective punishment.

Pereira Andrea A van Prooijen Jan-Willem JW

PloS one 20180503 5

Because punishments are expected to give offenders what they deserve proportionally to the severity of their offenses, the punishment of an entire group because of the misdeed of a few of its members is generally considered as unfair. Group entitativity might increase support for such collective punishment, because members of highly entitative groups are perceived as more similar and interchangeable. We designed three experiments comparing support for third-party collective punishment of low ver ...[more]

PMID: 29723255

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Project description:Humans everywhere cooperate in groups to achieve benefits not attainable by individuals. Individual effort is often not automatically tied to a proportionate share of group benefits. This decoupling allows for free-riding, a strategy that (absent countermeasures) outcompetes cooperation. Empirically and formally, punishment potentially solves the evolutionary puzzle of group cooperation. Nevertheless, standard analyses appear to show that punishment alone is insufficient, because second-order free riders (those who cooperate but do not punish) can be shown to outcompete punishers. Consequently, many have concluded that other processes, such as cultural or genetic group selection, are required. Here, we present a series of agent-based simulations that show that group cooperation sustained by punishment easily evolves by individual selection when you introduce into standard models more biologically plausible assumptions about the social ecology and psychology of ancestral humans. We relax three unrealistic assumptions of past models. First, past models assume all punishers must punish every act of free riding in their group. We instead allow punishment to be probabilistic, meaning punishers can evolve to only punish some free riders some of the time. This drastically lowers the cost of punishment as group size increases. Second, most models unrealistically do not allow punishment to recruit labor; punishment merely reduces the punished agent's fitness. We instead realistically allow punished free riders to cooperate in the future to avoid punishment. Third, past models usually restrict agents to interact in a single group their entire lives. We instead introduce realistic social ecologies in which agents participate in multiple, partially overlapping groups. Because of this, punitive tendencies are more expressed and therefore more exposed to natural selection. These three moves toward greater model realism reveal that punishment and cooperation easily evolve by direct selection--even in sizeable groups.

Dataset Information

Why we sometimes punish the innocent: The role of group entitativity in collective punishment.

Publications

Why we sometimes punish the innocent: The role of group entitativity in collective punishment.

Similar Datasets

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