I don't think including specific or general deterrents will in fact protect the public. I know there is a lot of research, and my own personal experience would suggest that the problem with young people committing offences is that they are not thinking about the consequences of their act, let alone thinking about the severity of the sentence. Increasing the severity of sentences will not deter their behaviour.
The Supreme Court of Canada in R. v. B. (D.), in discussing the whole issue, said, and I think this is an important point, that the youth justice system, the effect of the system, should be to deter crime. So having police catch young people, having them brought before their parents, having them brought before a judge, that will have a deterrent effect. But if you say deterrence should be a factor in the principle of sentencing, you will be increasing sentences, which will not have an effect on youth crime. It will have an effect on youth sentences and youth court judges.