Regardless of whether or not they are violent, juveniles are simply not as mature as adult counterparts and should not be treated in the same manner. The juvenile mind lacks the psychological capacity of that as adults, which is why psychiatrists refuse to diagnose some mental illnesses prior to adulthood.
The aim of the criminal justice system ought to be rehabilitation rather than retribution. In the case of juveniles, even violent ones, it is imperative that the justice system give them the chance to develop into responsible adults, instead of simply incarcerating them like the United States does with most of its adult criminals.
Violent juveniles, unlike violent adults, have not been in the court system as long and therefore should be given every opportunity to receive the help and treatment they need to correct their thinking and behaviors. They need a chance and someone to care, as well as professional therapy to help them become responsible, non-violent adults.
Consistent scientific research demonstrates that the brains of children are not fully developed, according to the Mayo Clinic. This includes those portions of a child's brain that control behavior and emotions. Because of these organic differences, and incomplete development, found in a child's brain, even a violent child should not be subject to the same treatment as adults in criminal court.