For their part Dr Hurlbert and Dr Ling, who report their study in Current Biology, used coloured patches flashing on a computer screen to find the preferences of their set of volunteers.

• 这个参与者对于食物的喜欢程度对于这个准确性的没有影响。实际上没有一个存在疑问的食物或者摊位的第二个属性被发现影响指出的准确性。