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Isidor Chein

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Chein served a member of, or consultant to, a number of research advisory committees. For example, Chein served on the American Psychology Associates’ Council of Representatives and Policy and Planning Board, the National Association of the Prevention of Addiction to Narcotics, and the National Jewish Welfare Board. In addition, Chein served as a research associate of New York City Mayor Fiorello La Guardia’s Committee on Unity. As a member of Mayor La Guardia's administration, Chein worked on social problems affecting New York City. Chein served as the director of research for the Commission on Community Interrelations of the American Jewish Congress, vice president of the Psychological Service Center of the New York Society of Clinical Psychologists, and president of the Society for the Psychological Study of Social Issues.

Following World War II

After the end of World War II, Chein spent a decade studying attitude change. As the research director of the American Jewish Congress's Commission on Community Interrelations and as a New York University faculty member, Chein conducted research on inter-group prejudice. He helped shift the research emphasis in social psychology from prejudiced attitudes to prejudiced behavior. In addition, Chein contributed to the making of the Supreme Court's 1954 decision in Brown v. Board of Education. Chein, Stuart W. Cook, and Kenneth B. Clark co-wrote the amicus curiae brief (also known as "the social scientists' brief") for the purpose of acquainting the justices with the impact segregation had on the psychological functioning of African American children. The Court also cited two papers Chein wrote in its 7-0 decision to strike down school segregation.

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