Neural mechanisms of intergroup exclusion and retaliatory aggression
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作者:
Lasko, Emily N.
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Virginia Commonwealth Univ, Dept Psychol, 806 West Franklin St, Richmond, VA 23284 USAVirginia Commonwealth Univ, Dept Psychol, 806 West Franklin St, Richmond, VA 23284 USA
Lasko, Emily N.
[1
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Dagher, Abigale C.
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机构:
Coll William & Mary, Sch Educ, Williamsburg, VA 23185 USAVirginia Commonwealth Univ, Dept Psychol, 806 West Franklin St, Richmond, VA 23284 USA
Dagher, Abigale C.
[2
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West, Samuel J.
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Virginia Commonwealth Univ, Dept Surg, Richmond, VA USAVirginia Commonwealth Univ, Dept Psychol, 806 West Franklin St, Richmond, VA 23284 USA
West, Samuel J.
[3
]
Chester, David S.
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Virginia Commonwealth Univ, Dept Psychol, 806 West Franklin St, Richmond, VA 23284 USAVirginia Commonwealth Univ, Dept Psychol, 806 West Franklin St, Richmond, VA 23284 USA
Chester, David S.
[1
]
机构:
[1] Virginia Commonwealth Univ, Dept Psychol, 806 West Franklin St, Richmond, VA 23284 USA
[2] Coll William & Mary, Sch Educ, Williamsburg, VA 23185 USA
[3] Virginia Commonwealth Univ, Dept Surg, Richmond, VA USA
Aggression occurs frequently and severely between rival groups. Although there has been much study into the psychological and socio-ecological determinants of intergroup aggression, the neuroscience of this phenomenon remains incomplete. To examine the neural correlates of aggression directed at outgroup (versus ingroup) targets, we recruited 35 healthy young male participants who were current or former students of the same university. While undergoing functional MRI, participants completed an aggression task against both an ingroup and an outgroup opponent in which their opponents repeatedly provoked them at varying levels and then participants could retaliate. Participants were then socially included and then excluded by two outgroup members and then completed the same aggression task against the same two opponents. Both before and after outgroup exclusion, aggression toward outgroup members was positively associated with activity in the ventral striatum during decisions about how aggressive to be toward their outgroup opponent. Aggression toward outgroup members was also linked to greater post-exclusion activity in the rostral and dorsal medial prefrontal cortex during provocation from their outgroup opponent. These altered patterns of brain activity suggest that frontostriatal mechanisms may play a significant role in motivating aggression toward outgroup members.
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South Secretariate, SERA 123,4th Floor,Poorna,YMCA Rd, Thiruvananthapuram 695001, Kerala, IndiaSouth Secretariate, SERA 123,4th Floor,Poorna,YMCA Rd, Thiruvananthapuram 695001, Kerala, India
机构:
Educ Univ Hong Kong, Dept Psychol, Tai Po, Hong Kong, Peoples R China
Educ Univ Hong Kong, Ctr Psychosocial Hlth, Tai Po, Hong Kong, Peoples R ChinaEduc Univ Hong Kong, Dept Psychol, Tai Po, Hong Kong, Peoples R China
Poon, Kai-Tak
Jiang, Yufei
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Educ Univ Hong Kong, Dept Psychol, Tai Po, Hong Kong, Peoples R China
Educ Univ Hong Kong, Ctr Psychosocial Hlth, Tai Po, Hong Kong, Peoples R ChinaEduc Univ Hong Kong, Dept Psychol, Tai Po, Hong Kong, Peoples R China