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  3. Diminishing parochialism in intergroup conflict by disrupting the right temporo-parietal junction.
 

Diminishing parochialism in intergroup conflict by disrupting the right temporo-parietal junction.

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BORIS DOI
10.7892/boris.58297
Date of Publication
May 2014
Publication Type
Article
Division/Institute

Institut für Psycholo...

Author
Baumgartner, Thomasorcid-logo
Institut für Psychologie, Sozialpsychologie und Soziale Neurowissenschaft
Schiller, Bastian
Rieskamp, Jörg
Gianotti, Lorena
Institut für Psychologie, Sozialpsychologie und Soziale Neurowissenschaft
Knoch, Daria
Institut für Psychologie, Sozialpsychologie und Soziale Neurowissenschaft
Subject(s)

100 - Philosophy::150...

Series
Social cognitive and affective neuroscience
ISSN or ISBN (if monograph)
1749-5024
Publisher
Oxford University Press
Language
English
Publisher DOI
10.1093/scan/nst023
PubMed ID
23482623
Uncontrolled Keywords

ingroup love

intergroup bias

normative behavior

outgroup hostility

parochialism

temporo-parietal junc...

third-party punishmen...

transcranial magnetic...

Description
Individuals react to violation of social norms by outgroup members differently than to transgressions of those same norms by ingroup members: namely outgroup perpetrators are punished much more harshly than ingroup perpetrators. This parochial punishment pattern has been observed and extensively studied in social psychology and behavioral economics. Despite progress in recent years, however, little is known about the neural underpinnings of this intergroup bias. Here, we demonstrate by means of transcranial magnetic stimulation (TMS) that the transient disruption of the right, but not the left temporo-parietal junction (TPJ), reduces parochial punishment in a third-party punishment paradigm with real social groups. Moreover, we show that this observed TMS effect on parochial punishment is mediated by a classical punishment motive, i.e. retaliation. Finally, our data suggests that a change in perspective-taking might be the underlying mechanism that explains the impact of right TPJ disruption on retaliation motivation and parochial punishment. These findings provide the first causal evidence that the right TPJ plays a pivotal role in the implementation of parochial behaviors.
Handle
https://boris-portal.unibe.ch/handle/20.500.12422/126209
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Baumgartner_SCAN_2014.pdftextAdobe PDF251.12 KBpublisherpublished restricted
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