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有钱没钱，看脸就知道？加拿大多伦多大学心理学研究员比约登思多蒂尔，联手心理学教授鲁尔所带领的实验发现，只要观察一个人的脸部特征，就能判断对方的“社会阶级”。

试验首先让受访者，观察80位男性和80位女性的“黑白照片”，再让他们猜测照片中的人的收入。实验结果显示，受访者猜测收入高低准确率高达68%，比随机猜测的准确率还要高。

研究人员放大所有脸部特征，发现只要看着“眼睛和嘴巴”，受访者仍可以准确做出猜测，比约登思多蒂尔将此归因于“情绪”。她表示，穷人与富人的不同情绪，会随着时间的流逝反映在脸上，长期的肌肉收缩，将改变脸部肌肉结构。

鲁尔则称，眼睛和嘴巴其实最容易泄漏一个人的阶级，眼角周围的鱼尾纹还有笑的时候嘴角的皱纹，都将显示出一个人的生活舒适度。

这种判断的前提，必须是照片中的人都要“面无表情”，因为一旦换成笑容照，受访者便会失去判断能力。

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