Aggression and violence are intrinsic elements of much competitive sport. John Kerr's text explores the psychology of aggressive and violent behaviour in sport, examining the underlying motivation for violence and discussing the moral motivation for violence and discussing the moral issues surrounding this important, controversial subject. Incorporating cutting edge research from both sport specific and mainstream psychology, John Kerr's text includes: discussion of a range of theoretical models examination of the athlete emotion, stress and arousal associated with violent behaviour. differences between sanctioned and unsanctioned violence how young athletes become 'acclimatised' to violence exploration of 'grey areas' and moral questions.