This text approaches the subject of human sexuality from a psychological perspective. It features information from a variety of disciplines, such as biology, women's studies, sociology, anthropology and health education. The text offers extensive coverage of research and theoretical findings, but its informal tone makes it suitable for students at all academic levels. This edition features: expanded coverage of multicultural research; updated data on sexual behaviour, including the University of Chicago NORC survey; and a video produced for Mcgraw-Hill presenting a series of unrehearsed interviews, covering a range of topics in sexuality. Attention is given to gender: the text highlights differences between male and female sexuality and the importance of gender roles in sexual behaviour.