Robert J. Stoller M.D. was, until his death, Professor of Psychiatry at UCLA School of Medicine. His books on human sexuality include 'The Transsexual Experiment', 'Perversion: The Erotic Form of Hatred', 'Splitting: A Case of Female Masculinity', 'Porn: Myths for the Twentieth Century', 'Pain and Passion: A Psychoanalyst explores the World of S and M', 'Observing the Erotic Imagination' and 'Presentations of Gender'. Dr Stoller was a psychoanalyst but because he recognized the need to understand how biological forces contribute to the development of mental functions, he took account of the im...