Effects of group affiliation on neural signatures of fairness norm violations in antisocial violent offenders
Effects of group affiliation on neural signatures of fairness norm violations in antisocial violent offenders
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DOI：
10.1016/j.pnpbp.2021.110355
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发表时间：
2021-05-20
影响因子：
5.6
通讯作者：
Schoenenberg，Michael
中科院分区：
文献类型：
--
作者：
Scheeff，Jonathan;Rauss，Karsten;Schoenenberg，Michael
虽然反社会个体中的违反规范行为已经被广泛研究，但关于这些人对针对他们的不公平行为作何反应，人们知之甚少。以前的研究得出了非决定性的结果，有一些证据表明反社会个体的理性和策略性行为。本研究采用最后通牒博弈的方法，比较了反社会暴力犯罪者(N=425)和控制者(N=226)的公平性考虑，其中一个参与者提出分割资源，另一个参与者必须接受或拒绝该提议作为回应。建议人的群体从属关系(群体内与群体外)和提议的公平性(公平与不公平)被操纵。我们发现群体之间在决策行为上没有差异。然而，健康的参与者表现出对群体联系的电生理反应，在暴力犯罪者组中这种反应减弱。这一数据表明，反社会暴力犯罪者对社会规范的理解是完整的，而电生理反应模式可能与对预期违规行为的情绪反应受损有关。
While norm-violating behavior in antisocial individuals has been widely studied, little is known about how these people react to unfair behavior directed towards them. Previous research yields inconclusive results with some evidence for rational and strategic behavior in antisocial individuals. Electrophysiological correlates as well as socio-contextual factors such as group affiliation that may inform decision making on fairness considerations have not been investigated in previous studies.This study compared fairness considerations of antisocial violent offenders (N= 25) and controls (N= 26) by using the Ultimatum Game where one player proposes a split of resources and the other player has to respond by accepting or declining the offer. Group affiliation of the proposer (in- vs. out-group) and fairness of offers (fair vs. unfair) were manipulated.We found no difference between groups regarding decision behavior. However, healthy participants showed an electrophysiological response to group affiliation, which was attenuated in the violent offender group.This data suggests intact understanding of social norms in antisocial violent offenders while electrophysiological response pattern may be linked to impaired emotional reactions to expectancy violations.