The very act of thinking that they are not as smart or reasonable as we are makes us feel closer to others who are like us. But, just as crucially, it allows us to justify how we treat them. Most people assume that stereotyping causes discrimination; Al Campanis, believing that blacks lack the “necessities” to be managers, refused to hire one. But the theory of cognitive dissonance shows that the path between attitudes and action runs in both directions. Often it is discrimination that evokes the self-justifying stereotype; Al Campanis, lacking the will or guts to convince the Dodger
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