Agreement among judges of personality: interpersonal relations, similarity, and acquaintanceship.

Personality judgments of 184 targets were provided by the self, college acquaintances, hometown acquaintances, parents, and strangers. Study 1 found that knowing the target in the same context enhanced but was not necessary for interjudge agreement and that acquaintances who had never met agreed with each other as well as those who had met. Study 2 found that personality judgements by acquaintances manifested much better interjudge and self-other agreement than did judgments by strangers. Acquaintances were not more similar to their targets than were strangers, and their accuracy derived more from their distinctive judgment of the target than from assumed similarity. These results rule out overlap, communication, and assumed similarity as necessary bases of interjudge agreement and thereby support the simpler hypothesis that interjudge agreement stems from mutual accuracy.