This study investigates how perceived parent and peer/friend relationships influence an adolescent's self-esteem and self-efficacy. Two age cohorts (the first group of adolescents was born in 1986-87 and the second one was born in 1983-84) are compared. The results are analyzed separately for both sexes. As the results reveal, an assessment of the relationship to parents and an assessment of the relationship to peers are significant predictors of the level of self-esteem and self-efficacy. Both aspects of the global self-evaluation are higher in older adolescents than in younger ones. Regarding self-esteem, parent variables (warmth and trust) are significant influential predictors. Peer/friend variables and age have a stronger influence on girls' self-esteem than on boys'. Regarding self-efficacy, the block of friend/peer variables explains more variance than the block of parent variables. The global comparison with peers is strongly influential, particularly in girls. Boys' self-efficacy is also related to the perceived warmth of the father.