This study tested monotropy, hierarchy, independence, and integration conceptual models of adolescent-mother and adolescent-father attachment to explain adolescents' perceived social interrelationships with extrafamilial attachment figures (peers, teachers). Participants included 356 Israeli adolescents (12-15 years). More adolescents were significantly classified as securely attached to mothers than to fathers, but high concordances emerged. Results supported two of the attachment models, hierarchy and integration, as explaining variation in adolescents' perceived extrafamilial interrelationships. As per the hierarchy attachment model, adolescent-mother attachment outweighed adolescent-father attachment to some extent in predicting adolescents' perceived social interrelationship measures. As per the integration attachment model, significant differences emerged on most social interrelationship measures between the 4 distinct subgroups: secure attachment to both parents, neither, only father, only mother. The Discussion section focuses on the unique importance of attachment to each parent for typically developing junior high students.Four conceptual models have emerged in the attachment literature illustrating possible links between children's secure attachments with mothers and fathers and those children's subsequent socioemotional developmental outcomes (see reviews in Bretherton, 2010;van IJzendoorn, Sagi, & Lambermon, 1992). The first conceptual model-the monotropy model of attachment-proposes that only the principal primary attachment figure (generally the mother) has an exclusive impact on the child's personality development despite the existence of other attachment figures such as the father. The second model of attachment, the hierarchy model, posits that attachment to the principal primary attachment figure, usually the mother, is the best developmental predictor, whereas relationships with subsidiary attachment figures (like the father) contribute to a lesser extent. Third, the independence model assumes that all attachment relationships are equally important for children's development, but each contributes in distinct domains. Fourth, the integration model of attachment proposes that the quality of all attachment relationships taken together as a whole is what optimally predicts outcomes.