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Robert Brannon, Gary Cyphers, Sharlene Hesse, Susan Hesselbart, Roberta Keane, Howard Schuman, Thomas Viccaro, Diana Wright, Attitude and Action: A Field Experiment Joined to a General Population Survey, American Sociological Review, Vol. 38, No. 5 (Oct., 1973), pp. 625-636
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Brannon et al. (1973) studied this question.
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