Аннотация:In 2 studies, peer relationships were related to children's perceptions of security in the child-mother relationship. In Study 1, a sample of 74 5th graders, children who viewed their relationship with their mother as more secure were significantly more accepted by peers, had more reciprocated friendships, and were less lonely than children who rated the relationship as less secure. In Study 2, a sample of 5th and 6th graders, 44 same-gender friend pairs were videotaped in conversation and completed friendship questionnaires. Dyads in which both children were securely attached to their mothers were more responsive, were less critical, and reported more companionship than did friend dyads in which one child was securely and the other insecurely attached to his or her mother. The findings demonstrate links between the peer and family systems in middle childhood.