These perspectives differ both in the populations for whom the applications are intended and in the style and theoretical orientation of the intervention techniques. Part I describes the assessment, treatment planning, and individual psychotherapy with primarily young adult or later adolescent males who have been sexually abused. The theoretical perspective draws on adaptations of Heinz Kohut's self-psychology. This perspective often uses interventions from a cognitive-behavioral perspective. Part II proposes a model of family systems therapy for working with adolescent males who are perpetrators of sexual abuse. A variety of family systems perspectives and techniques are synthesized into a victim-sensitive therapy for offenders. Part III profiles a model for working with adolescent male prostitutes. The detached-youth work perspective is derived from an older social work tradition best portrayed by Gisela Konopka and recently adapted by Jackie Thompson. The intervention described falls more under the rubric of youth work, not therapy. The population described is generally viewed as untreatable in therapy. 368 references and a subject index