IN CONTEXT
Social psychology
Attitude change
1956 Social psychologist Leon Festinger states his theory of cognitive dissonance, which posits that having inconsistent beliefs causes uncomfortable psychological tension.
1968 The My Lai Massacre of civilians in Vietnam takes place, possibly because US soldiers dehumanized victims to reduce cognitive dissonance.
1978 Elliot Aronson devises the Jigsaw method of learning, involving highly interdependent small-group learning, to reduce prejudice and violence at school.
1980s Psychologists argue that dissonance experiments may not reflect real attitude changes, but a desire to seem consistent ...
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