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Political science has paid a great deal of attention to sources of intergroup conflict, but the discipline has focused less on forces that bring people together and lead them to transcend group boundaries. This study presents evidence that attachment to a shared superordinate identity can improve intergroup relations by reducing the social distance between people of different racial groups. Using a survey experiment, this research shows that making a superordinate identity salient increased support for a tax increase. The effects of the identity salience treatment are compared to a policy particularism treatment in terms of effect size and their interaction with each other. The size and direction of the identity salience effect is affected by the degree of respondents' acceptance of the proffered identity. Implications for social identity theory, racial policy attitudes, and American national identity are discussed.
John E. Transue (Mon,) studied this question.