And, as an entirely unnecessary follow-up to my previous comment, it's worth noting that threats of punishment, like Bruce's there, are generally found to be spectacularly ineffective for preventing incidents of violent acting-out, particularly in the case of someone with Antisocial features. (This fact contributes to many of my views on parenting, the criminal justice system, American schools, and capital punishment, but I digress.)
So, good work, Bruce, but if you think you've improved that kid's life, I'm afraid your intentions are noble but your methods are lacking. As much as I deeply love superhero comics and their slam! bam! pow! method of problem-solving, working in psychology has taught me that, in the real world, compassion is thousands of more times more effective at preventing violence than more violence could ever be.