Pre- and posttests were administered to assess the knowledge and competence of the probation workers, various kinds of problem behaviors that workers and parents observed in delinquent youth, and various kinds of problem behaviors that the youth observed in themselves. The training included both didactic and experiential elements. The behavioral training significantly improved the knowledge and the competence of probation workers and parents. No evidence was found that the workers' behavioral training affected the number of problem behaviors that the youth observed in themselves. The difficulties of conducting the study are discussed, along with recommendations for addressing these problems in future research. Footnotes, study data, 2 reference notes, and 18 references are supplied. (Author abstract modified)