Evidence map›Paper›PMID 21220339›Full record

Trial reportProceedings of the National Academy of Sciences of the United States of America2011

Oxytocin promotes human ethnocentrism.

Carsten K W De Dreu, Lindred L Greer, Gerben A Van Kleef, Shaul Shalvi, Michel J J Handgraaf

Registry-linked trialAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Proceedings of the National Academy of Sciences of the United States of America, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT01834261 (Computational Modeling of Oxytocin in the Regulation of Trust), which is not on this map. Cited by 208 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
208citing papers in PubMed, 3 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT01834261 phase1completednot on this mapstarted 2013, after this paper: background citation

Computational Modeling of Oxytocin in the Regulation of Trust

TypeinterventionalSponsorStony Brook UniversityRan2013 to 2015Enrolled51ConditionsBrain Dynamics in Healthy AdultsArmsSyntocinon Nasal Spray, 40IU, Syntocinon Placebo Formulation, 40IU
3 · Its place in the literature

Who cites it

208 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Pooled it
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  7. Oxytocin and vasopressin modulation of prisoner's dilemma strategies.Journal of psychopharmacology (Oxford, England) · 2020
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  10. Neurobiological Mechanisms of Responding to Injustice.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2018
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  11. Oxytocin promotes altruistic punishment.Social cognitive and affective neuroscience · 2017
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  13. Oxytocin-enforced norm compliance reduces xenophobic outgroup rejection.Proceedings of the National Academy of Sciences of the United States of America · 2017
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  14. Microbial lysate upregulates host oxytocin.Brain, behavior, and immunity · 2017
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  17. Oxytocin increases bias, but not accuracy, in face recognition line-ups.Social cognitive and affective neuroscience · 2015
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  19. Intranasal administration of oxytocin increases compassion toward women.Social cognitive and affective neuroscience · 2015
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148 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors.

Carsten K W De DreuDepartment of Psychology, University of Amsterdam, 1018 WB, Amsterdam, The Netherlands. c.k.w.dedreu@uva.nl
Lindred L Greer
Gerben A Van Kleef
Shaul Shalvi
Michel J J Handgraaf

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Human ethnocentrism--the tendency to view one's group as centrally important and superior to other groups--creates intergroup bias that fuels prejudice, xenophobia, and intergroup violence. Grounded in the idea that ethnocentrism also facilitates within-group trust, cooperation, and coordination, we conjecture that ethnocentrism may be modulated by brain oxytocin, a peptide shown to promote cooperation among in-group members. In double-blind, placebo-controlled designs, males self-administered oxytocin or placebo and privately performed computer-guided tasks to gauge different manifestations of ethnocentric in-group favoritism as well as out-group derogation. Experiments 1 and 2 used the Implicit Association Test to assess in-group favoritism and out-group derogation. Experiment 3 used the infrahumanization task to assess the extent to which humans ascribe secondary, uniquely human emotions to their in-group and to an out-group. Experiments 4 and 5 confronted participants with the option to save the life of a larger collective by sacrificing one individual, nominated as in-group or as out-group. Results show that oxytocin creates intergroup bias because oxytocin motivates in-group favoritism and, to a lesser extent, out-group derogation. These findings call into question the view of oxytocin as an indiscriminate "love drug" or "cuddle chemical" and suggest that oxytocin has a role in the emergence of intergroup conflict and violence.

Indexed as

Cooperative BehaviorSocial BehaviorChoice BehaviorCodependency, PsychologicalDouble-Blind MethodEmotionsHumansMaleOxytocinTask Performance and AnalysisYoung AdultOxytocin

Identifiers

PMID21220339
PMCPMC3029708

What OpenQuestion holds

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Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.