Positive illusion in close relationships

The literature regarding self‐other comparisons suggests that self‐enhancing perceptions are prevalent, including forms of “illusion” such as excessively positive self‐evaluation, unrealistic optimism, and exaggerated perceptions of control. Concepts from optimal distinctiveness theory served as the basis for two experiments examining whether illusion functions similarly when the context of evaluation involves a relationship. In both experiments participants rated themselves, the best friend, and the average other—or their own romantic relationships, the best friend's relationship, and the relationship of the average other–using scales measuring positivity of evaluation, optimism regarding the future, and perceptions of control. In both experiments, participants exhibited centrality‐based differentiation, rating targets more favorably to the degree that the target was more central to their social identity. Patterns of differentiation differed for the two contexts: In the individual context, participants differentiated themselves and their friends from the average other. In the relationship context, participants differentiated their own relationships from the relationships of friends and average others. Also, participants rated individuals as more controllable than relationships. Participants in Experiment 2 provided information regarding potential predictors of illusion. Analyses of these data suggest that favorable centrality‐based differentiation may be partially accounted for by impression management, global self‐esteem (particularly in the individual context), and commitment level (particularly in the relationship context).