What should we do with teenagers who commit crimes? Are they children whose offenses are the result of immaturity and circumstances, or are they in fact criminals?

"Adult time for adult crime" has been the justice system's mantra for the last twenty years. But locking up so many young people puts a strain on state budgets--and ironically, the evidence suggests it ultimately increases crime.

In this bold book, two leading scholars in law and adolescent development offer a comprehensive and pragmatic way forward. They argue that juvenile justice should be grounded in the best...