Beyond attitudinal ambivalence: effects of belief homogeneity on attitude-intention-behaviour relations

Attitudinal ambivalence extends the traditional unidimensional conceptualization of attitude by acknowledging that people can simultaneously evaluate attitude objects as positive and negative. The present paper argues that this bidimensional view of attitudes may be extended further to take account Of multidimensional influences on attitudes using measures of belief homogeneity. Study I (n = 155) showed that attitudes based on homogeneous belief-sets were significantly more predictive of subsequent behaviour (beta = 0.47, p < 0.01) than were attitudes based on heterogeneous belief-sets (beta = 0.08, ns). Study 2 (n = 136) manipulated belief homogeneity and found that when beliefs were made heterogeneous, attitudes based on heterogeneous belief-sets were significantly less predictive of behavioural intentions (beta = 0.46, p < 0.01) than attitudes based on homogeneous belief-sets (beta = 0.84, p < 0.01). Implications for research on attitudinal ambivalence and attribute importance are discussed. Copyright (C) 2003 John Wiley Sons, Ltd.