The majority of sexually aggressive behaviors exhibited by adolescents are not primarily sexually motivated. This insight opens new horizons for working with sexually deviant youth. In this book, a psychotherapeutically oriented approach replaces psychoeducational efforts. It sustainably improves the ability to form relationships and thus the prognosis for these adolescents. Thomas Gruber is one of the pioneers of this approach and has played a significant role in the development of the "Viersen Model" for the treatment of juvenile sex offenders. He provides numerous, sometimes surprising solutions from the extensive methodological inventory of systemic individual and group counseling. As an experienced practitioner, the author always keeps the integration of helpful offerings from other therapeutic schools in mind. Numerous case examples make the therapist's manual vivid and illustrative.