Abstract: | A pair of related experiments examined the relationship of functional similarity (i.e., the degree of similarity between two interactants in assessing mutually known others on personal construct dimensions) to interpersonal attraction. In Experiment I, 10 previously unacquainted college students of both sexes participated in 10 hours of dyadic disclosure exercises over a 5-week period. As predicted, members of high functional similarity dyads evidenced greater attraction to one another than did members of low functional similarity dyads. Experiment II investigated the relationship of functional similarity to level of acquaintance (i.e., friends, nominals) and type of assessment (i.e., physical, interactional, psychological) in a 2 × 3 factorial design. As hypothesized, “friendship” pairs of male undergraduates displayed greater functional similarity than did “nominal” pairs from the same population, particularly at the deeper level of “psychological” assessment. Results are discussed in relation to classical conditioning (D. Byrne, In L. Berkowitz (Ed.), Advances in experimental social psychology, Vol. 4. New York. Academic Press, 1969), affect-reinforcement (G. L. Clore, In S. W. Duck (Ed.), Theory and practice in interpersonal attraction. New York/London: Academic Press, 1977) and information processing ( I. Ajzen, In S. Duck (Ed.), Theory and practice in interpersonal attraction, New York/London: Academic Press, 1977) models of interpersonal attraction, and are interpreted as supporting and extending (S. Duck's Theory and practice in interpersonal attraction, New York/London: Academic Press, 1977) filtering theory of friendship formation. |