Dr Williams and Dr Mattingley showed the participants in their study photographs of these emotional expressions in mixed sets of either four or eight.

Williams和Mattingley博士的研究图片展现给参与者看。这些图片上的表情混为四组或八组。

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Dr Williams and Dr Mattingley suspect the reason for this is that being able to spot an angry individual quickly has a survival advantage and, since anger is more likely to turn into lethal violence in men than in women, the ability to spot angry males quickly is particularly valuable.

ECONOMIST: To one emotion, men are more sensitive than women