about structural delinquent behavior. These insights are based on self-reported information systematically and simultaneously collected from about 70,000 12-15 year old youths in 28 countries. Until recently, the self-report methodology has not been applied on such a large scale in an international context. The results of this survey provide new and unexpected data about those young people who structurally commit criminal acts, as well as on the frequency of the behavior and the conditions that have an impact on offending. The wealth of descriptions and insights in delinquency of all these countries will be of great interest to scholars, students and practitioners because of the special character of the publication; it is a book of reference to everyone interested in the backgrounds of juvenile delinquency.