Book excerpt: Progress in Behavior Modification, Volume 8 covers the developments in the study of behavior modification. The book discusses the conceptual issues and treatment interventions for obsessive-compulsives; the behavioral study of clinical phobias; and fear reduction techniques with children. The text also describes the behavioral treatments for marital discord; the behavioral treatment of headaches; and the behavioral assessment and treatment of clinical pain. The modification of academic performance in the grade school classroom is also considered. Psychologists, psychiatrists, sociologists, and educators will find the book invaluable.