This document summarizes the context and prevailing views in juvenile justice in the early-to-mid 1990s. It discusses how Robert Martinson's influential 1974 study concluding that "nothing works" to rehabilitate offenders undermined support for rehabilitation. Additionally, predictions in the 1990s of a coming wave of "super predators" fueled "tough on crime" policies and over-incarceration despite being disproven. The document argues that new research since the 1990s provides a basis for effective juvenile justice reforms that incorporate what is now known about what works.