Serious juvenile offenders, those who commit the crimes most feared by the public, such as assaults or other violent crimes, are often sent to secure juvenile institutions or given adult sentences and sent to adult prisons. In the public’s mind, these youth are often unlikely to reform, and the juvenile court, with its emphasis on rehabilitation, is often too lenient. But are they immune to reform? Adolescence is a time of rapid change and maturation, and as the Pathways to Desistance Study1, underway as an offshoot of the MacArthur Research Network on Adolescent Development and Juvenile Justice, is finding, many of even the most serious offenders make the transition to early adulthood with fewer problems than might be anticipated. The study, which is following 1,355 serious offenders aged 14 to 17 in two cities, finds that a majority of the adolescents report little or no involvement in antisocial activities three years after their involvement with the court. Moreover, a sizable group—about 15%—go from a very high level of involvement to almost none. This brief presents findings from several ongoing analyses of the Pathways data.