alexa The neuropeptide oxytocin regulates parochial altruism in intergroup conflict among humans.
Food & Nutrition

Food & Nutrition

Journal of Probiotics & Health

Author(s): De Dreu CK, Greer LL, Handgraaf MJ, Shalvi S, Van Kleef GA,

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Abstract Humans regulate intergroup conflict through parochial altruism; they self-sacrifice to contribute to in-group welfare and to aggress against competing out-groups. Parochial altruism has distinct survival functions, and the brain may have evolved to sustain and promote in-group cohesion and effectiveness and to ward off threatening out-groups. Here, we have linked oxytocin, a neuropeptide produced in the hypothalamus, to the regulation of intergroup conflict. In three experiments using double-blind placebo-controlled designs, male participants self-administered oxytocin or placebo and made decisions with financial consequences to themselves, their in-group, and a competing out-group. Results showed that oxytocin drives a "tend and defend" response in that it promoted in-group trust and cooperation, and defensive, but not offensive, aggression toward competing out-groups. This article was published in Science and referenced in Journal of Probiotics & Health

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