Oxytocin Effect on Collective Decision Making: A Randomized Placebo Controlled Study.

Collective decision making often benefits both the individuals and the group in a variety of contexts. However, for the group to be successful, individuals should be able to strike a balance between their level of competence and their influence on the collective decisions. The hormone oxytocin has b...

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Main Authors: Uri Hertz, Maria Kelly, Robb B Rutledge, Joel Winston, Nicholas Wright, Raymond J Dolan, Bahador Bahrami
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2016-01-01
Series:PLoS ONE
Online Access:https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0153352&type=printable
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author Uri Hertz
Maria Kelly
Robb B Rutledge
Joel Winston
Nicholas Wright
Raymond J Dolan
Bahador Bahrami
author_facet Uri Hertz
Maria Kelly
Robb B Rutledge
Joel Winston
Nicholas Wright
Raymond J Dolan
Bahador Bahrami
author_sort Uri Hertz
collection DOAJ
description Collective decision making often benefits both the individuals and the group in a variety of contexts. However, for the group to be successful, individuals should be able to strike a balance between their level of competence and their influence on the collective decisions. The hormone oxytocin has been shown to promote trust, conformism and attention to social cues. We wondered if this hormone may increase participants' (unwarranted) reliance on their partners' opinion, resulting in a reduction in collective benefit by disturbing the balance between influence and competence. To test this hypothesis we employed a randomized double-blind placebo-controlled design in which male dyads self-administered intranasal oxytocin or placebo and then performed a visual search task together. Compared to placebo, collective benefit did not decrease under oxytocin. Using an exploratory time dependent analysis, we observed increase in collective benefit over time under oxytocin. Moreover, trial-by-trial analysis showed that under oxytocin the more competent member of each dyad was less likely to change his mind during disagreements, while the less competent member showed a greater willingness to change his mind and conform to the opinion of his more reliable partner. This role-dependent effect may be mediated by enhanced monitoring of own and other's performance level under oxytocin. Such enhanced social learning could improve the balance between influence and competence and lead to efficient and beneficial collaboration.
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spelling doaj-art-7ec372ead72747f992b86d24b6b371f52025-08-20T03:26:10ZengPublic Library of Science (PLoS)PLoS ONE1932-62032016-01-01114e015335210.1371/journal.pone.0153352Oxytocin Effect on Collective Decision Making: A Randomized Placebo Controlled Study.Uri HertzMaria KellyRobb B RutledgeJoel WinstonNicholas WrightRaymond J DolanBahador BahramiCollective decision making often benefits both the individuals and the group in a variety of contexts. However, for the group to be successful, individuals should be able to strike a balance between their level of competence and their influence on the collective decisions. The hormone oxytocin has been shown to promote trust, conformism and attention to social cues. We wondered if this hormone may increase participants' (unwarranted) reliance on their partners' opinion, resulting in a reduction in collective benefit by disturbing the balance between influence and competence. To test this hypothesis we employed a randomized double-blind placebo-controlled design in which male dyads self-administered intranasal oxytocin or placebo and then performed a visual search task together. Compared to placebo, collective benefit did not decrease under oxytocin. Using an exploratory time dependent analysis, we observed increase in collective benefit over time under oxytocin. Moreover, trial-by-trial analysis showed that under oxytocin the more competent member of each dyad was less likely to change his mind during disagreements, while the less competent member showed a greater willingness to change his mind and conform to the opinion of his more reliable partner. This role-dependent effect may be mediated by enhanced monitoring of own and other's performance level under oxytocin. Such enhanced social learning could improve the balance between influence and competence and lead to efficient and beneficial collaboration.https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0153352&type=printable
spellingShingle Uri Hertz
Maria Kelly
Robb B Rutledge
Joel Winston
Nicholas Wright
Raymond J Dolan
Bahador Bahrami
Oxytocin Effect on Collective Decision Making: A Randomized Placebo Controlled Study.
PLoS ONE
title Oxytocin Effect on Collective Decision Making: A Randomized Placebo Controlled Study.
title_full Oxytocin Effect on Collective Decision Making: A Randomized Placebo Controlled Study.
title_fullStr Oxytocin Effect on Collective Decision Making: A Randomized Placebo Controlled Study.
title_full_unstemmed Oxytocin Effect on Collective Decision Making: A Randomized Placebo Controlled Study.
title_short Oxytocin Effect on Collective Decision Making: A Randomized Placebo Controlled Study.
title_sort oxytocin effect on collective decision making a randomized placebo controlled study
url https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0153352&type=printable
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