Аннотация:TOPIC. Childhood externalizing behavior PURPOSE. To analyze the construct of externalizing behavior (aggression, delinquency, and hyperactivity), illustrate the biosocial model of childhood externalizing, and draw clinical implications for nursing research and practice. SOURCES. A review of the literature based on psychological, psychiatric, and nursing journals. CONCLUSIONS. A better understanding of childhood externalizing behavior problems and the risk factors underlying them are essential to prevent them. The employment of an integrative biosocial perspective is argued to be important in understanding this behavior.