Despite inventing the juvenile court a little more than a century ago, the United States has become an international outlier in its juvenile sentencing practices. The War on Kids explains how that happened and how policymakers can correct the course of juvenile justice today.

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.

Youths are on trial today in two ways. In the first sense, whereas youths once faced delinquency hearings in juvenile courts, now with increasing frequency they stand trial in criminal courts. In the second sense, recent reforms in juvenile justice have placed the notion of youth itself on trial. Society's trend toward responding to adolescent offenders as adults asks that we set aside traditional presumptions about adolescence as a condition of immaturity that warrants mitigation. The ensuing debate highlights the need for evidence to address whether youths' capacities are sufficiently different from adults to warrant different legal responses to their transgressions.

In this book, Slobogin and Fondacaro present their vision for a new juvenile justice system, founded on the evidence at hand and promoting the principles of rehabilitation and reintegration into society. The authors develop their juvenile justice policy proposals effectively by carefully addressing the problems with past policy approches and recent theoretical contributions.

What should we do with teenagers who commit crimes? In this book, two leading scholars in law and adolescent development argue that juvenile justice should be grounded in the best available psychological science, which shows that adolescence is a distinctive state of cognitive and emotional development. Although adolescents are not children, they are also not fully responsible adults.