nine chapters that each address a particular behaviour or set of behaviours, written by the authors of the interventions themselves. Chapters 2 to 4 examine risk-related behaviours (safer-sex; smoking; exposure to radon gas); Chapters 5 to 7 turn to health-enhancing behaviours and screening (reducing fat intake; uptake of vitamin C; breast self-examination; participation in cervical and colorectal cancer screening); and Chapters 8 to 10 explore road safety (speeding by drivers; pedestrian behaviour; and cycle helmet use). The chapters follow a common structure: a presentation of the 'epidemiological facts' about the behaviour and why an intervention was needed; an outline of the way in which the theoretical model being used was adapted for the intervention; a presentation of the experimental results; and a discussion of their theoretical and practical implications. The book ends with a chapter of commentary on the challenges of devising theory-based interventions. Following on from the highly successful Predicting Health Behaviour edited by Mark Conner and Paul Norman, this book will be recognised as a ground-breaking text in the psychology of health, for students, researchers and practitioners alike.