Culture-related differences in the neural processing of probability during mixed lottery value-based decision-making.
Culture-related differences in the neural processing of probability during mixed lottery value-based decision-making.
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DOI：
10.1016/j.biopsycho.2021.108209
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发表时间：
2021-11
影响因子：
2.6
通讯作者：
Goh JOS
中科院分区：
文献类型：
--
作者：
Lee CY;Chen CC;Mair RW;Gutchess A;Goh JOS
这项研究评估了西方人和东亚人在经济冒险方面的差异如何反映出在基于价值的决策过程中对概率结果的分析或整体处理方面的文化差异。27名美国人(美国)和51名台湾(台湾)年轻人完成了一项功能磁共振成像(FMRI)彩票选择任务(LCT)实验。参与者接受或拒绝不同概率赢或输不同程度的分数的赌注。当获胜概率为0.50时，TW参与者接受更多的赌注，而美国参与者随着获胜概率的下降，更有区别地降低他们对获胜赌注的接受率。这两组人都以相似的频率拒绝输掉赌注(赢的概率为0.50)。关键是，相应地，美国的腹内侧额前皮质(VMPFC)反应显示出比TW组更大的对获胜概率条件的区分。我们的发现突出了VMPFC中的一种神经认知机制，即在区分概率奖励结果方面的文化差异如何影响对风险和前景的神经计算。
This study evaluated how differences in economic risk-taking in Westerners and East Asians reflect cultural differences in the analytic or holistic processing of probabilistic outcomes during value-based decisions. Twenty-seven Americans (US) and 51 Taiwanese (TW) young adults completed a functional magnetic resonance imaging (fMRI) Lottery Choice Task (LCT) experiment. Participants accepted or rejected stakes with varying probabilities of winning or losing different magnitudes of points. TW participants accepted more stakes when win probabilities were > 0.50, whereas US participants reduced their acceptance rates of winning stakes more discriminately as win probabilities decreased. Both groups rejected losing stakes (win probabilities < 0.50) with similar frequency. Critically, ventromedial prefrontal cortex (VMPFC) responses correspondingly showed greater discrimination between win probability conditions in US than TW groups. Our findings highlight a neurocognitive mechanism in the VMPFC for how cultural differences in distinguishing between probabilistic reward outcomes shape neural computations of risk and prospects.
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