Those who do, there are several childhood disorders not only adults may be confused with children in it, so we should punish, suitable for ages and they act.
There are many young people who make mistakes. It means not only adults Children may be confused in that part. So we should punish them for their sins they were committing.
Those who committed a crime, there are many ages, not only the adults may be mixed in the child. So we should punish them for age and guilt that they do.