Book excerpt: Between 1980 and 1996 the number of arrests has increased considerably for offenders ages 12 and under. This increase is a cost to society in two ways: the cost of the crime and the cost of multiple agencies involved with these children. Several questions have developed due to this increase: How does the juvenile justice system deal with child delinquents? Is child delinquency a predictor of serious, violent, and chronic offending? How early can we predict delinquency, and what are early warning signs? In an effort to develop answers for these questions and many more, editors Rolf Loeber and David Farrington organized a study group on Very Young offenders comprising 39 experts on juvenile delinquency and child problem behavior. Over a two-year period of intense and collaborative work these individuals have produced the book Child Delinquents: Development, Intervention, and Service Needs. Presenting empirically derived insights, Child Delinquents is the definitive statement to date on the working knowledge of prevalence, development, risk and protective factors, and optimal intervention with preteen offenders. This book is an excellent source for a broad audience of researchers, scholars, psychiatry, and practitioners at the administrative level.