The neural basis of implicit moral attitude - An IAT study using event-related fMRI
The neural basis of implicit moral attitude - An IAT study using event-related fMRI
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DOI：
10.1016/j.neuroimage.2005.11.005
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发表时间：
2006-05-01
期刊：
影响因子：
5.7
通讯作者：
Blair, R. James R.
中科院分区：
文献类型：
--
作者：
Luo, Qian;Nakic, Marina;Blair, R. James R.
最近的道德模型表明了基于情感的自动道德态度在道德推理中的重要性。然而，之前对道德推理的研究经常依赖于容易受到自愿控制的明确措施。为了调查参与者的自动道德态度，我们使用了道德内隐联想测试（IAT）。当目标概念（例如，非法）在行为上与相关属性（例如，坏；一致条件）或不相关属性（例如，好；不一致条件）配对时，参与者对两种不同强度级别（例如，高强度非法 = 人际暴力；低强度非法 = 破坏行为）的视觉描绘的合法和非法行为的合法性进行评级。行为上，显示出 IAT 效应； RT 在一致条件下比不一致条件下更快。在神经水平上，内隐的道德态度（以刺激强度函数的 BOLD 反应增加为标志）与右侧杏仁核和腹内侧眶额皮质的激活增加相关。此外，相对于一致试验，不一致试验的表现与右腹外侧前额叶皮层 (BA 47)、左侧膝下扣带回 (BA 25)、双侧前运动皮层 (BA 6) 和左侧尾状核的活动增加相关。讨论了这些区域在道德推理中的功能贡献。由爱思唯尔公司出版
Recent models of morality have suggested the importance of affect-based automatic moral attitudes in moral reasoning. However, previous investigations of moral reasoning have frequently relied upon explicit measures that are susceptible to voluntary control. To investigate participant's automatic moral attitudes, we used a morality Implicit Association Test (IAT). Participants rated the legality of visually depicted legal and illegal behaviors of two different intensity levels (e.g., high intensity illegal = interpersonal violence; low intensity illegal = vandalism) both when the target concept (e.g., illegal) was behaviorally paired with an associated attribute (e.g., bad; congruent condition) or an unassociated attribute (e.g., good; incongruent condition). Behaviorally, an IAT effect was shown; RTs were faster in the congruent rather than incongruent conditions. At the neural level, implicit moral attitude, as indexed by increased BOLD response as a function of stimulus intensity, was associated with increased activation in the right amygdala and the ventromedial orbitofrontal cortex. In addition, performance on incongruent trials relative to congruent trials was associated with increased activity in the right ventrolateral prefrontal cortex (BA 47), left subgenual cingulate gyrus (BA 25), bilateral premotor cortex (BA 6) and the left caudate. The functional contributions of these regions in moral reasoning are discussed. Published by Elsevier Inc.