BEHAVIOR THERAPY 34,421M36, 2003 Application of the Utrecht Coping Power Program and Care as Usual to Children With Disruptive Behavior Disorders in Outpatient Clinics: A Comparative Study of Cost and Course of Treatment NICOLLE M. H. VAN DE WIEL WALTER MATTHYS Department of ChiM and Adolescent Psychiatry and Rudolph Magnus Institute for Neurosciences, University Medical Center Utrecht PEGGY COHEN-KETTENIS University Amsterdam HERMAN VAN ENGELAND Department of Child and Adolescent Psychiatry and Rudolph Magnus Institute for Neurosciences, University Medical Center Utrecht This research was supported by grants from the Nationaal Fonds Geestelijke Volksgezond- heid, Stichting Kinderpostzegels Nederland, Wetenschappelijk Onderzoek--en Documentatie- centrum van het Ministerie van Justitie. We thank J. E. Lochman (University of Alabama) and K. C. Wells (Duke University) for enabling us to use their manuals. We thank J. E. Lochman and E. Buskens (University Medical Center Utrecht, Department Julius Center) for their helpful suggestions and comments. We thank all the participating institutions: the Department of Child and Adolescent Psychiatry of the University Medical Center Utrecht; the Department of Child and Adolescent Psychiatry of the Psychiatric Center Zon & Schild (i.e., Symfora Group), called Fornhese, in Amersfoort, and the Meregaard in Almere; the Department of Child and Adolescent Psychiatry of the Psychiatric Hospital Veldwijk in Ermelo (recently fused into Meerkanten GGz), called the Riethorst; the Regional Institutions for Outpatient Mental Health Care in Utrecht (recently fused into Alt- recht) and the Regional Institution for Outpatient Mental Health Care in Lelystad. We thank A. Planje-Spek and J. de Bruin for their contributions in conducting the UCPP- treatment, and R van Houtem for her assistance in data collection. Address correspondence to Walter Matthys, Ph.D., Department of Child and Adolescent Psy- chiatry, University Medical Center Utrecht, BO1-324, PO Box 85500, 3508 GA Utrecht, The Netherlands; e-mail: w.matthys@azu.nl. 421 005-7894/04/0421~343651.00/{3 Copyright 2003 by Association for Advancement of Behavior Therapy All rights for reproductionin any formreserved.