Never mind blinking dilated pupils giveaway the haggling game

Thursday, 11 March, 2010

It may be possible to gauge whether someone you are negotiating with has reached a decision based on the dilation of the pupils of their eyes.

It turns out that when people make decisions, their pupils dilate, a subtle cue that could be used to predict a person’s intentions, or even converse with people with locked-in syndrome.

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