The aim was firstly to determine if peers and parents had a different impact on the personality development of the adolescent. A second aim was to determine if gender played a role in this regard. An empirical investigation was carried out involving 98 learners from Grades 8 to 11 (53 boys and 55 girls). The respondents completed instruments measuring parent-child relationship, relationship with peers, self-concept, and personality characteristics. The results indicated that the peer group, when compared with parents, had a stronger relationship with the personality development of the adolescent. This stronger relationship was more prominent in boys than in girls. Gender did, therefore, play a role.