Book excerpt: Rethinking Aggression and Violence in Sport explores the psychological aspects of these two intrinsic elements of competitive sport. This book critically examines the important issues associated with aggression and violence in sport, including: * a review of current theory in the psychology of aggression * exploration of how players become acclimatised to physical violence * discussion of the psychological benefits of sanctioned and unsanctioned sport violence * examination of the moral and ethical dimensions of the debate * the psychological basis of spectator aggression * case studies from a wide variety of sports. This text is a must read for researchers and students within sport studies, psychology and sociology with an interest in human violence and aggressive behaviour.