Abstract:
:Intergroup conflict contributes to human discrimination and violence, but persists because individuals make costly contributions to their group's fighting capacity. Yet, how group members effectively coordinate their contributions during intergroup conflict remains poorly understood. Here, we examine the role of oxytocin for (the coordination of) contributions to group attack or defense in multi-round, real-time feedback intergroup contests. In a double-blind placebo-controlled study with N = 480 males in Intergroup Attacker-Defender Contests, we found that oxytocin reduced contributions to attack and over time increased attacker's within-group coordination of contributions. However, rather than becoming peaceful, attackers given oxytocin better tracked their rival's historical defense and coordinated their contributions into well-timed and hence more profitable attacks. Our results reveal coordination of contributions as a critical component of successful attacks and subscribe to the possibility that oxytocin enables individuals to contribute to in-group efficiency and prosperity even when doing so implies outsiders are excluded or harmed. Editorial note:This article has been through an editorial process in which the authors decide how to respond to the issues raised during peer review. The Reviewing Editor's assessment is that all the issues have been addressed (see decision letter).
journal_name
Elifejournal_title
eLifeauthors
Zhang H,Gross J,De Dreu C,Ma Ydoi
10.7554/eLife.40698subject
Has Abstractpub_date
2019-01-25 00:00:00issn
2050-084Xpii
40698journal_volume
8pub_type
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