Oxytocin modulates selection of allies in intergroup conflict
Proceedings of the Royal Society B: Biological Sciences , Volume 279 - Issue 1731 p. 1150- 1154
In intergroup competition and conflict, humans benefit from coalitions with strong partners who help them to protect their in-group and prevail over competing out-groups. Here, we link oxytocin, a neuropeptide produced in the hypothalamus, to ally selection in intergroup competition. In a double-blind placebocontrolled experiment, males self-administered oxytocin or placebo, and made selection decisions about six high-threat and six low-threat targets as potential allies in intergroup competition. Males given oxytocin rather than placebo viewed high-threat targets as more useful allies and more frequently selected them into their team than low-threat targets.
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de Dreu, C.K.W, Greer, L.L, Handgraaf, M.J.J, Shalvi, S, & van Kleef, G.A. (2012). Oxytocin modulates selection of allies in intergroup conflict. Proceedings of the Royal Society B: Biological Sciences, 279(1731), 1150–1154. doi:10.1098/rspb.2011.1444