Abstract: The properties of traits are important moderator variables which influence the accuracy of personality judgment. The previous researches have showed that the higher observability the traits are, the easier be judged, and the higher accuracy and agreement they have. The evaluativeness of traits interfere the accuracy of self-perception. Comparing with the neutral traits, the self-other agreement of evaluativeness traits is lower; Comparing with unambiguous traits, the self-peer inter-judgment agreement is lower in ambiguous traits, and this is reducing with the increasing of traits ambiguous gradually. Furthermore, the properties of traits often interact on the accuracy of personality judgment with other factors, such as acquaintanceship. When examining the effects of traits properties on the personality judgment accuracy, we must take the ecological validity of experimental research into account, as well as integrate it with the matching of trait properties, types and contents of traits, the individual differences, and the cultural differences and so on.

Key words: personality judgment, accuracy, observability, evaluativeness, ambiguity