Alternative mechanisms for regulating racial responses according to internal vs external cues
Alternative mechanisms for regulating racial responses according to internal vs external cues
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DOI：
10.1093/scan/nsl002
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发表时间：
2006-06-01
影响因子：
4.2
通讯作者：
Devine, Patricia G.
中科院分区：
文献类型：
--
作者：
Amodio, David M.;Kubota, Jennifer T.;Devine, Patricia G.
规范种族偏见行为的个人（内部）和规范（外部）推动力有据可查，但内部和外部驱动的监管过程在多大程度上源于同一机制尚不清楚。尽管根据内部线索对种族偏见的调节与冲突监控过程和背侧前扣带皮层（dACC）的激活有关，但我们提出，根据外部线索调节的不带偏见的反应涉及错误感知机制，这是与头侧前扣带皮层（rACC）活动相关的过程。我们招募了对无偏见规范高度敏感或低度敏感的低偏见参与者，参与者在私人或公共场合完成刻板印象抑制任务，同时记录脑电图。对事件相关电位的分析表明，与 dACC 活动相关的错误相关消极成分预测了跨条件下偏差的行为控制，而与 rACC 活动相关的错误感知成分则预测了仅在公共场合对外部压力敏感的参与者的控制，要求他们不带偏见地做出反应。
Personal (internal) and normative (external) impetuses for regulating racially biased behaviour are well-documented, yet the extent to which internally and externally driven regulatory processes arise from the same mechanism is unknown. Whereas the regulation of race bias according to internal cues has been associated with conflict-monitoring processes and activation of the dorsal anterior cingulate cortex (dACC), we proposed that responses regulated according to external cues to respond without prejudice involves mechanisms of error-perception, a process associated with rostral anterior cingulate cortex (rACC) activity. We recruited low-prejudice participants who reported high or low sensitivity to non-prejudiced norms, and participants completed a stereotype inhibition task in private or public while electroencephalography was recorded. Analysis of event-related potentials revealed that the error-related negativity component, linked to dACC activity, predicted behavioural control of bias across conditions, whereas the error-perception component, linked to rACC activity, predicted control only in public among participants sensitive to external pressures to respond without prejudice.