This book deals with multiple personality disorders and associated dissociative disorders, presenting data and clinical evidence for a widely accepted but as yet unproven theory that MPD arises as a dissociative strategy for coping with severe childhood trauma. It focuses on the diagnosis, assessment, clinical characteristics and relationship of MPD to other diagnoses and treatment. New findings are presented which lead to a new model of the disorder and a new therapuetic approach - one that has been hospital tested. The text has been designed for psychiatrists, clinical psychologists, social workers, psychiatric nurses, professors, students, practitioners, hospital administrators, and researchers in behavioural and abnormal psychology.