Social problems in many domains including health, education, social relationships, and the workplace have their origins in human behavior. The documented links between behavior and social problems has compelled governments and organizations to explore ways to effectively intervene to promote adaptive behavior change. The Handbook of Behavior Change provides comprehensive coverage of contemporary theory, research, and practice on behavior change. It incorporates evidence-based approaches to behavior change with chapters from leading theorists, researchers, and practitioners from multiple disciplines including psychology, sociology, behavioral science, economics, philosophy, and implementation science. It is the go-to resource for researchers, students, practitioners, and policymakers looking for current knowledge on behavior change and guidance on how to develop effective interventions to change behavior in various contexts.