Extensive studies have documented that youth in the juvenile justice system have higher incidences of psychiatric, trauma, substance abuse and thought disorders than the general population. A study in 2007 found that 70 percent of youth in the juvenile justice system have psychiatric disorders and that 27 percent of these youth have severe impairment. They developed antisocial values and behaviors over years of being physically, emotionally and sexually attacked by others and frequently witnessing violence. This review represents some of the most widely used studies documenting these disorders of the youth in the juvenile justice system.

Evidence of Trama