Role of the right temporoparietal junction in intergroup bias in trust decisions.
Adult
Brain Mapping
Decision Making
/ physiology
Electroencephalography
Games, Experimental
Humans
Individuality
Inhibition, Psychological
Magnetic Resonance Imaging
Male
Neuronavigation
Parietal Lobe
/ diagnostic imaging
Reaction Time
Social Behavior
Temporal Lobe
/ diagnostic imaging
Theta Rhythm
Transcranial Magnetic Stimulation
Trust
/ psychology
Young Adult
decision-making
intergroup bias
repetitive transcranial magnetic stimulation
temporoparietal junction
Journal
Human brain mapping
ISSN: 1097-0193
Titre abrégé: Hum Brain Mapp
Pays: United States
ID NLM: 9419065
Informations de publication
Date de publication:
15 04 2020
15 04 2020
Historique:
received:
12
09
2019
revised:
23
11
2019
accepted:
11
12
2019
pubmed:
20
12
2019
medline:
18
9
2021
entrez:
20
12
2019
Statut:
ppublish
Résumé
Intergroup bias, which is the tendency to behave more positively toward an in-group member than toward an out-group member, is pervasive in real life. In particular, intergroup bias in trust decisions substantially influences multiple areas of life and thus better understanding of this tendency can provide significant insights into human social behavior. Although previous functional magnetic resonance imaging studies showed the involvement of the right temporoparietal junction (TPJ) in intergroup trust bias, a causal relationship between the two has rarely been explored. By combining repetitive transcranial magnetic stimulation and a newly developed trust game task, we investigated the causal role of the right TPJ in intergroup bias in trust decisions. In the trust game task, the counterpart's group membership (in-group or out-group) and reciprocity were manipulated. We applied either neuronavigated inhibitory continuous theta burst stimulation (cTBS) or sham stimulation over the right TPJ before performing the trust game task in healthy volunteers. After the sham stimulation, the participants' degrees of investments with in-group members were significantly higher than those with out-group members. However, after cTBS to the right TPJ, this difference was not observed. The current results extend previous findings by showing that the causal roles of the right TPJ can be observed in intergroup bias in trust decisions. Our findings add to our understanding of the mechanisms of human social behavior.
Identifiants
pubmed: 31854496
doi: 10.1002/hbm.24903
pmc: PMC7268017
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
1677-1688Informations de copyright
© 2019 The Authors. Human Brain Mapping published by Wiley Periodicals, Inc.
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