Implicit trustworthiness decisions: Automatic coding of face properties in the human amygdala
Implicit trustworthiness decisions: Automatic coding of face properties in the human amygdala
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DOI：
10.1162/jocn.2007.19.9.1508
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发表时间：
2007-09-01
影响因子：
3.2
通讯作者：
Todorov, Alexander
中科院分区：
文献类型：
--
作者：
Engell, Andrew D.;Haxby, James V.;Todorov, Alexander
判断一个不熟悉的人是否值得信任是社交环境中最重要的决定之一。我们使用功能性磁共振成像来显示杏仁核参与了对面孔可信度的内隐评估，这与先前的发现一致。在一项不需要个人评价的任务中，杏仁核的反应随着感知的可信度的降低而增加。更重要的是，我们测试了这种反应是否是由于个人的特质感知或面对被认为是不值得信赖的个人属性。杏仁核的反应更好地预测了共识评级的可信度比个人自己的判断。在控制了与一致性评级的共同方差后，个人判断在杏仁核中的剩余方差很小。这些发现表明，杏仁核会根据通常被认为是不值得信任的面部特征自动对面部进行分类。
Deciding whether an unfamiliar person is trustworthy is one of the most important decisions in social environments. We used functional magnetic resonance imaging to show that the amygdala is involved in implicit evaluations of trustworthiness of faces, consistent with prior findings. The amygdala response increased as perceived trustworthiness decreased in a task that did not demand person evaluation. More importantly, we tested whether this response is due to an individual's idiosyncratic perception or to face properties that are perceived as untrustworthy across individuals. The amygdala response was better predicted by consensus ratings of trustworthiness than by an individual's own judgments. Individual judgments accounted for little residual variance in the amygdala after controlling for the shared variance with consensus ratings. These findings suggest that the amygdala automatically categorizes faces according to face properties commonly perceived to signal untrustworthiness.