Book excerpt: Antisocial acts by children and teens are on the rise – from verbal abuse to physical bullying to cyber-threats to weapons in schools. Strictly punitive responses to aggressive behaviour may even escalate a situation, leaving peers, parents, and teachers feeling helpless. This unique volume conceptualizes aggression as a symptom of underlying behavioural and emotional problems and examines the psychology of perpetrators and the power dynamics that foster intentionally hurtful behaviour in young people. It details for readers how bibliotherapy offers relevant, innovative, and flexible treatment – as a standalone intervention or as a preventive method in conjunction with other forms of treatment – and can be implemented with individuals and groups, parents, teachers, and even rivals. This unique, must-have resource is essential reading for school psychologists, school counselors, social workers, and clinical child psychologists and any allied educational and mental health professionals who work with troubled youth.