An early onset of delinquency prior to age 13 years increases the risk of later serious, violent,
and chronic offending by a factor of 2–3. Also child delinquents, compared to juveniles
who start offending at a later age, tend to have longer delinquent careers. This article summarizes
the report of the Office of Juvenile Justice and Delinquency Prevention's Study Group on
Very Young Offenders, chaired by Rolf Loeber and David P. Farrington. The Study Group,
consisting of 16 scholars and 23 coauthors, worked for 2 years on preparing a report, undertaking
extensive secondary data analyses, and writing chapters in different speciality areas. The report
consists of a state of the art review of the developmental background of child delinquents. The
report also summarizes risk and protective factors in the individual, family, peer group, school,
and neighborhood that affect that development. Lastly, the report renews relevant preventive and
remedial interventions in the juvenile justice system, families, peer groups, schools, and
neighborhoods, and makes a case for improvement in the integration of services for child
delinquents. Policy recommendations are presented to improve methods of dealing with child
delinquents by juvenile justice, child welfare, and mental health agencies.