The National Institute of Justice (NIJ) is the nation's primary resource for advancing scientific research, development, and evaluation on crime and crime control and the administration of justice in the United States. Headed by a presidentially appointed director, it is one of the major units in the Office of Justice Programs (OJP) of the U.S. Department of Justice. Under its authorizing legislation, NIJ awards grants and contracts to a variety of public and private organizations and individuals. At the request of NIJ, "Strengthening the National Institute of Justice" assesses the operations and quality of the full range of its programs. These include social science research, science and technology research and development, capacity building, and technology assistance. The book concludes that a federal research institute such as NIJ is vital to the nation's continuing efforts to control crime and administer justice. No other federal, state, local, or private organization can do what NIJ was created to do. Forty years ago, Congress envisioned a science agency dedicated to building knowledge to support crime prevention and control by developing a wide range of techniques for dealing with individual offenders, identifying injustices and biases in the administration of justice, and supporting more basic and operational research on crime and the criminal justice system and the involvement of the community in crime control efforts. As the embodiment of that vision, NIJ has accomplished a great deal. It has succeeded in developing a body of knowledge on such important topics as hot spots policing, violence against women, the role of firearms and drugs in crime, drug courts, and forensic DNA analysis. It has helped build the crime and justice research infrastructure. It has also widely disseminated the results of its research programs to help guide practice and policy. But its efforts have been severely hampered by a lack of independence, authority, and discretionary resources to carry out its mission.

Adolescence is a distinct, yet transient, period of development between childhood and adulthood characterized by increased experimentation and risk-taking, a tendency to discount long-term consequences, and heightened sensitivity to peers and other social influences. A key function of adolescence is developing an integrated sense of self, including individualization, separation from parents, and personal identity. Experimentation and novelty-seeking behavior, such as alcohol and drug use, unsafe sex, and reckless driving, are thought to serve a number of adaptive functions despite their risks. Research indicates that for most youth, the period of risky experimentation does not extend beyond adolescence, ceasing as identity becomes settled with maturity. Much adolescent involvement in criminal activity is part of the normal developmental process of identity formation and most adolescents will mature out of these tendencies. Evidence of significant changes in brain structure and function during adolescence strongly suggests that these cognitive tendencies characteristic of adolescents are associated with biological immaturity of the brain and with an imbalance among developing brain systems. This imbalance model implies dual systems: one involved in cognitive and behavioral control and one involved in socio-emotional processes. Accordingly adolescents lack mature capacity for self-regulations because the brain system that influences pleasure-seeking and emotional reactivity develops more rapidly than the brain system that supports self-control. This knowledge of adolescent development has underscored important differences between adults and adolescents with direct bearing on the design and operation of the justice system, raising doubts about the core assumptions driving the criminalization of juvenile justice policy in the late decades of the 20th century. It was in this context that the Office of Juvenile Justice and Delinquency Prevention (OJJDP) asked the National Research Council to convene a committee to conduct a study of juvenile justice reform. The goal of Reforming Juvenile Justice: A Developmental Approach was to review recent advances in behavioral and neuroscience research and draw out the implications of this knowledge for juvenile justice reform, to assess the new generation of reform activities occurring in the United States, and to assess the performance of OJJDP in carrying out its statutory mission as well as its potential role in supporting scientifically based reform efforts.