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De Dreu, Carsten K.W; Greer, Lindred L; Handgraaf, Michel J.J; Shalvi, Shaul; Van Kleef, Gerben A; Baas, Matthijs; Ten Velden, Femke S; Van Dijk, Eric; Feith, Sander W.W
Science (American Association for the Advancement of Science), 06/2010, Letnik: 328, Številka: 5984Journal Article
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.
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in: SICRIS
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