Sometime younger kids find the changes of life a bit much and will indeed find an outlet, be it hobbies or trouble. I can suggest watch what he's like around friends, and getting him into a new hobby. It's a bit old school but maybe the parents should spend more time with him. I personally got the belt as a kid and it set me right. Well, best of luck.

At 13 it's a bit late to introduce discipline that may have been lacking at a younger age, as the respect for the parents is not high on the list of 13 year olds. Discipline must start now, at home. The police can't raise him for you, the school can't raise him for you, the neighbors can't raise him for you. The parent needs to reign him in. You are asking what you can do to stop your siblings behavior? As a sibling all you can do is try to verbally guide him, it's up to your parents to take action. They need to back the train up and restrict his access to things, violent programs, violent games, violence begets violence, if he isn't being abused, where is he learning to hit from? Where is he getting arrested at? At the Mall? Don't let him go. On the street at night? Why is he out? Parental control is essential. It's a challenge to establish these boundaries suddenly when they weren't there anymore or if they were there, they need to be enforced now that they have been breached. Your best bet is counceling. If the behavior is allowed to continue, it will only get worse before it gets better. Don't give up on him, but don't hand the problems over to someone to care for... if the parent doesn't want to deal with it, why would a stranger?

need to be tough on the rascal . do not let him one inch off in the next month . and talk to him face to face . open up and be frank on all aspects . he knows what is right and wrong but is pushing it . if he fails to see good sense when he is arrested next time leave him there to do his time . john

That's not hormones paying him up that is him using them as an excuse to get away with really bad behavior he needs a kick up the bum or gelding. Personally, in cases like this I prefer gelding. Solves the problem and doesn't breed anymore.