International in scope, this book examines evidence-based youth policies, and it presents a systematic and interdisciplinary reflection on what has been termed the "magic triangle," i.e. the relationship between youth policies, youth research, and practical youth work, based on the necessity of organizing knowledge exchange between different actors in the youth field. On this basis, researchers from across the globe analyze and discuss the contexts and strategies of youth policy development, the theories that underlie youth policy, and the models and impact of youth policy in different...