In 5 studies, the authors investigated the effects of comparison with an individual versus comparison with the statistical average on self-evaluations of performance and ability. In Studies 1 and 2, participants took a test of lie detection ability and were provided with the average score and the score of an individual coactor. Both types of feedback significantly affected self-evaluations of performance, but only comparison with the coactor significantly affected self-evaluations of ability. Studies 3 and 4 demonstrated that the presence of a coactor moderated the effect of aggregate social comparison on self-evaluations of ability. The results provide preliminary support for the contention that minimizing the impact of comparison with the average is a self-serving strategy that is facilitated by the presence of others.

Many counterfactual reasoning studies assess how people ascribe blame for harmful actions. By itself, the knowledge that a harmful outcome could easily have been avoided does not predict blame. In three studies, the authors showed that an outcome's mutability influences blame and related judgments when it is coupled with a basis for negative evaluations. Study 1 showed that mutability influenced blame and compensation judgments when a physician was negligent but not when the physician took reasonable precautions to prevent harm. Study 2 showed that this finding was attenuated when the victim contributed to his own demise. In Study 3, whether an actor just missed arriving on time to see his dying mother or had no chance to see her influenced his blameworthiness when his reason for being late provided a basis for negative evaluations but made no difference when there was a positive reason for the delay. These findings clarify the conditions under which an outcome's mutability is likely to influence blame and related attributions.

The moderating effects of self-esteem on women's reactions to social comparisons of attractiveness were investigated. After viewing a photograph of an attractive or unattractive peer, female college students completed measures of affect, body esteem, internalization of socio-cultural norms of appearance, and contingencies of self-worth. Self-esteem significantly moderated the effects of social comparison on body esteem. Whereas the low self-esteem group displayed a contrast effect, the high self-esteem group displayed an assimilation effect. The Self-Esteem × Social Comparison interaction was significant even when controlling for differences in affect, internalization of norms, and contingencies of self-worth. Possible mediators of this interaction are discussed in the article.

Three studies examine associations between relationship social comparison (RSC) tendencies, insecurity, and perceived relationship quality. Study 1 (68 females, 9 males) showed that RSC was associated with self-esteem, anxious and avoidant attachment styles, and relationship insecurity. RSC associations with anxious attachment and insecurity, but not avoidant attachment, held when controlling for self-esteem. Study 2 (322 females, 95 males) showed that RSC was associated with intimacy, satisfaction, investment, commitment, and relationship alternatives. RSC associations held when controlling for general comparison tendencies for all except investment. Study 3 (61 females, 11 males) showed that RSC was associated with changes in relationship insecurity and satisfaction over time, and that insecurity mediated the relationship between RSC and satisfaction.

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