O. J. Simpson as shared (and unshared) reality: the impact of consensually shared beliefs on interpersonal perceptions and task performance in different- and same-ethnicity dyads.

Shared reality theory postulates that interpersonal relationships are regulated by the degree to which people share experiences and beliefs (Hardin & Higgins, 1996). To assess consequences of shared (and unshared) reality for interpersonal relationships, we examined the effects of the 1990s Simpson trial on actual interpersonal interactions in same- and different-ethnicity dyads. In 3 experiments (conducted directly following, 5 years after, and 10 years after the trial), people who had been primed with Simpson participated in cooperative problem-solving tasks. Because the trial represented a dimension of belief discrepancy between Blacks and Whites but a dimension of shared beliefs within the two ethnic groups, shared reality theory predicts that activating memories of the trial would affect interpersonal interactions differently depending upon ethnic composition of dyads. As predicted, thoughts of Simpson caused decrements in quality of interpersonal perceptions and behaviors for different-ethnicity dyads but increases for same-ethnicity dyads. In addition, in a 4th study, we found that consensus predicted liking among partners in the previous 3 experiments and that these effects were significant in the expected direction for both same- and different-ethnicity pairs.