事情被分组在一起是有原因的，但是一旦将它们分组，他们的分组就会使他们看起来彼此比以前更像。也就是说，单纯的分类行为加强了刻板印象。如果您想削弱某些刻板印象，请消除分类。阿莫斯的
(Things are grouped together for a reason, but, once they are grouped, their grouping causes them to seem more like each other than they otherwise would. That is, the mere act of classification reinforces stereotypes. If you want to weaken some stereotype, eliminate the classification. Amos's)