Research on mental health services for children and adolescents has become a vibrant subspecialty within the larger field of mental health services research. This research program experienced a somewhat later start than that focusing on adults, and faces a set of issues and challenges that are both different and in many ways more complex. The served population itself is bounded by infancy and the late teen years, and includes all age groups in between. This developmental spectrum naturally necessitates there being a correspondingly diverse array of mental health services. The disorders...