Corticostriatal connectivity is associated with the reduction of intergroup bias and greater impartial giving in youth
Corticostriatal connectivity is associated with the reduction of intergroup bias and greater impartial giving in youth
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DOI：
10.1016/j.dcn.2019.100628
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发表时间：
2019-06-01
影响因子：
4.7
通讯作者：
Telzer, Eva H.
中科院分区：
文献类型：
--
作者：
Do, Kathy T.;Telzer, Eva H.
虽然亲社会行为在许多物种中优先指向内群体，但在发展早期优先考虑内群体和外群体的结果可以减少群间偏见。目前的研究检查了皮质纹状体的招募和连接在缓冲儿童和青少年时期群体间偏见对昂贵的给予行为的影响中的作用，这一时期其他取向的偏好和相关的大脑功能发生了显着变化。在功能性磁共振成像过程中，青少年（n = 51; 8-16岁）做出的决定可能会使组内和组外同龄人受益，但会以自己为代价。相对于外群体同龄人，青年人对内群体更亲社会，但当对他人的潜在奖励与对自己的潜在奖励之间存在更大差异时，更高的奖励不平等）。虽然他们没有表现出皮质纹状体激活的差异，青年表现出更大的腹侧纹状体（VS）和后上级颞沟（pSTS）之间的连接时，考虑更不公平的亲社会的决定，有利于外群体的同龄人的结果，这削弱了亲社会行为的组间偏见。我们发现在行为或神经水平上没有年龄相关的差异，这表明在童年后期，群体偏好已经偏向了亲社会行为及其神经认知过程，并且在青春期不会改变。
Although prosocial behavior is preferentially directed toward the in-group across many species, prioritizing the outcomes of both the in- and out-group earlier in development can reduce intergroup biases. The current study examined the role of corticostriatal recruitment and connectivity in buffering the effect of intergroup bias on costly giving behavior during childhood and adolescence, a period when other-oriented preferences and associated brain functions undergo significant change. During functional magnetic resonance imaging, youth (n = 51; 8-16 years) made decisions that could potentially benefit in-group and out-group peers at a cost to themselves. Youth were more prosocial toward in-group relative to out-group peers, but were relatively more prosocial to out-group peers when there was a greater discrepancy between potential rewards for others over oneself (i.e., higher reward inequity). Although they showed no differences in corticostriatal activation, youth evinced greater connectivity between the ventral striatum (VS) and posterior superior temporal sulcus (pSTS) when considering more inequitable prosocial decisions that favored the outcomes of out-group peers, which attenuated intergroup biases in prosocial behavior. We found no age-related differences at the behavioral or neural level, suggesting that in-group preferences already bias prosocial behavior and its neurocognitive processes by late childhood and do not change across adolescence.