Learning activities and pedagogical tools included in the text: New to the 5th Edition: Divided into three parts, each section builds on the previous one. First, gender and the development of gender roles across cultures are introduced. Scientific methods used to study gender, attitudes toward gender, and the latest data and theories on sex differences in cognitive, social, and emotional domains are then introduced. Theories of gender-role development, including evolutionary, social learning, social role, and gender schema theories are reviewed along with the implications of gender on achievement. Part one reviews the key information on the similarities and differences between the sexes and the theories that explain the differences which lay the foundation for the remainder of the book. Part two examines the role of gender in relationships including communication styles and the impact of these interactions on friendship and romantic relationships. The third part examines the role of gender on physical and mental health. The effects of marriage and parenting on health are reviewed, including domestic abuse, along with how gender affects the association between work and health. This is an ideal text for upper level gender-focused courses including the psychology of gender, psychology of women or men, gender issues, and gender, women’s, or men’s studies taught in psychology, women’s studies, gender studies, sociology, and anthropology.