This research was to investigate the mediating effect of the defense mechanism to the relationship among object relationship and B cluster personality trait. In Study, four hundred seventy four undergraduate students completed th following questionnaires: the Mother-early Object Relationship Scale, Father-early Object Scale, Self-Concept Scale, Other-Concept Scale, Korea-Defense Style Questionnaire, Korea-Personality Disorder Scale. the results of hierarchical multiple regression showed that the effects of early object relationship and present self, object concept, defense mechanism on antisocial personality trait were significant. Second, the mediation effects of defense mechanism between early object relationship, present self, object concept and antisocial personality trait were significant. finally, the the
clinical implications and limitations of this study are discussed.
key words : early relationship, self concept, object concept, defense mechanism, antisocial personality trait