In contemporary attitudes-and-attraction research, attraction has been viewed as a multidimensional construct. Moreover, the effects of dissimilar and similar attitudes have been shown to vary with the facets of attraction measured. The hypotheses tested are that (1) only the proportion of similar attitudes relevant to the social context or interaction goals affects behavioral attraction (i.e. interpersonal distance between the participant and targets), and (2) the proportion of similar attitudes influences affective attraction (i.e. Byrne's attraction measure), regardless of attitude relevance. Two experiments were conducted with classroom activities (Experiment 1) and a writing workshop (Experiment 2) as the social contexts. The results of both experiments supported the hypotheses. Clearly, a solely affective measure of attraction seems inadequate for understanding the similarity-attraction relationship. Copyright # 2002 John Wiley & Sons, Ltd.In attitudes-and-attraction research, it has been reported that the greater the attitudinal similarity between two persons, the greater the attraction between them (Byrne & Nelson, 1965). While this similarityattraction relationship has been observed repeatedly (for a review, see Byrne, 1971Byrne, , 1997, the limiting conditions were rather rare. Rosenbaum (1986) came up with an altogether new view on the similarityattraction link: only dissimilar attitudes affect attraction by leading to repulsion. Ever since the repulsion hypothesis, the relationship between attitude similarity and attraction has been an important issue in the contemporary literature (e.g. Byrne, Clore, & Smeaton, 1986;Drigotas, 1993;Hoyle, 1993;Pilkington & Lydon, 1997;Singh & Tan, 1992;Smeaton, Byrne, & Murnen, 1989;Tan & Singh, 1995).The first empirical evidence of a positive linear relationship between the proportion of similar attitudes and interpersonal attraction was found by Byrne and Nelson (1965). This relationship implies equal and opposite effects of similar and dissimilar attitudes, which corresponds to the similaritydissimilarity symmetry hypothesis. Recent studies, however, have reported a much stronger effect of dissimilar than similar attitudes, which corresponds to the similarity-dissimilarity asymmetry hypothesis