The purpose of the present study is to determine the relationship of six kinds of mother's and father's behaviours viz., restrictive, permissive, loving, neglecting, protective and rejective on three specific personality traits viz., hostility, self-esteem and self disclosure of their offsprings. For this a random sample of 340 adolescents aged 1 fi-1 S yrs were administered Ojha Parental Behaviour Inventory, Bending Hostility Scale, Mohsin self-concept Inventory and Jourard Self-Disclosure Inventory. It was found that both mother's and father's behaviours, in general, were significantly related with each of personality traits. Multiple regression analyses for the relative contribution of each of mother's and father's behaviours to each personality trait revealed that (1) mother's rejection and father's restriction are the significant positive contributors to hostility in adolescents, (2) protective behaviours of both parents contribute significantly positively while their rejective behaviour contribute significantly negatively to self-esteem; and (3) mother's permissiveness and father's love contribute significantly and positively to self-disclosure.