This book has become well established as the leading international reference on sexual deviation. The third edition builds on the success of its predecessors, and offers an up-to-date account of findings in the clinical, experimental, and academic aspects of all fields dealing with sexual deviation. Throughout the book there is emphasis on clinical treatments, supported by a summary of the latest experimental findings on the biology of sexual behaviour. Distinguished practitioners and academic experts discuss advances in their fields from a psychiatric, legal, psychotherapeutic, and behaviour therapy point of view, particularly in relation to sex offenders. They also cover significant advances in the psychotherapeutic treatment of gender disorders and homosexuality. There is also a new section on child sexual abuse and the resulting effects on adults.