The psychology of men and masculinities is a thriving, growing field dedicated to the study of how men's lives shape—and are shaped by—sex and gender. This volume shows how far the field has advanced and what directions it is taking. It explains and evaluates major theories, research, and applications, with an emphasis on the gender role strain paradigm and related theories. In addition, it synthesizes research on men's mental and physical health, as well as therapeutic interventions and prevention programs. Special attention is given to ethnic, racial, and sexual minority men. With such broad and inclusive coverage, this volume will be a standard reference for researchers and practitioners in this field and an essential part of university courses on men and masculinities.