To evaluate the impact of actual and perceived similarity on interpersonal attraction, we meta-analyzed 460 effect sizes from 313 laboratory and field investigations. Results indicated that the associations between interpersonal attraction and both actual similarity (r = .47) and perceived similarity (r = .39) were significant and large. The data also indicate that (i) actual similarity was important in no-interaction and short-interaction studies, (ii) there was a significant reduction in the effect size of actual similarity beyond no-interaction studies, and (iii) the effect of actual similarity in existing relationships was not significant. Alternatively, perceived similarity predicted attraction in no-interaction, short-interaction, and existing relationship studies. The implications of perceived similarity, rather than actual similarity, being predictive of attraction in existing relationships are discussed.

To evaluate the veracity of models of the mere exposure effect and to understand the processes that moderate the effect, we conducted a meta-analysis of the influence of repeated exposure on liking, familiarity, recognition, among other evaluations. We estimated parameters from 268 curve estimates drawn from 81 articles and revealed that the mere exposure effect was characterized by a positive slope and negative quadratic effect consistent with an inverted-U shaped curve. In fact, such curves were associated with (a) all visual, but not auditory stimuli; (b) exposure durations shorter than 10 s and longer than 1 min; (c) both homogeneous and heterogeneous presentation types; and (d) ratings that were taken after all stimuli were presented. We conclude that existing models for the mere exposure effect do not adequately account for the findings, and we provide a framework to help guide future research. (PsycINFO Database Record

This research investigated two competing explanations of the similarity effect: Byrne’s (1971) reinforcement model and the information processing perspective. A meta-analysis of 240 laboratory-based similarity studies explored moderators important to the similarity effect, including set size, proportion of similarity, centrality of attitudes, and information salience. Results indicated effects for proportion of similarity, centrality of attitudes, and information salience, and were largely consistent with predictions of the information processing perspective. We discuss the implications of these findings for the two perspectives, for other models for the similarity effect, and for the role of affect and cognition in the experience of interpersonal attraction.

Three studies examined a model of attraction in which the cognitive evaluation of the target individual was the primary determinant of interpersonal attraction. In Study 1, the cognitive evaluation of the target individual mediated the influence of attitude similarity on interpersonal attraction. In Study 2, a path analysis revealed significant indirect effects of (a) similarity on cognitive evaluation via the valence of information implied by attitudes and (b) the valence of information implied by attitudes on attraction via cognitive evaluation of the target. Study 3 provided empirical and theoretical support for the uniqueness of interpersonal attraction from cognitive evaluation. The implications of these data for existing attraction theory are discussed, and a new model of interpersonal attraction is described.

Previous theorizing by clinical psychologists suggests that adolescent narcissism may be related to parenting practices (Kernberg, 1975;Kohut, 1977). Two studies investigated the relations between parenting dimensions (i.e., warmth, monitoring, and psychological control) and narcissism both with and without removing from narcissism variance associated with trait self-esteem. Two hundred and twenty-two college students (Study 1) and 212 high school students (Study 2) completed the Narcissistic Personality Inventory, a trait self-esteem scale, and standard measures of the three parenting dimensions. Parental warmth was associated positively and monitoring was associated negatively with both types of narcissism. Psychological control was positively associated with narcissism scores from which trait self-esteem variance had been removed. Clinical implications of the findings are discussed, limitations are addressed, and future research directions are suggested.