The "Sexual Rainbow" includes quizzes that show how masculine and feminine you and your brain are, and it also contains a potted history of sexual legal rights and social change. Questions the author explores in this book include: What are masculinity and femininity and how are they judged? What are the real differences between heterosexuals and homosexuals? What makes a person want to change their gender? And what effects do genetics, hormones and the environment have on a person's sexuality? The answers to all these questions and more give a greater understanding of both our sexuality and of others in a demythologised and rational manner. The book concludes that only knowledge, familiarity and acceptance of the 'sexual rainbow' will breed tolerance.