First, I'm well aware of the definition of psychopathy. Second, psychopathy is not a binary condition. An individual can be on a spectrum of severity, or (as has been noted by people researching the condition) psychopaths can and do mimic the responses to emotion that they see in others but do not feel themselves. Perhaps he is or perhaps he isn't, but without additional action of the part of the OP and the kid's parents there is no way he will be properly diagnosed until something similar, but more severe, might happen.

So, yes, we are making judgements in this thread, but not everyone here is being "judgmental." Making a considered decision about available evidence is a reasonable act. The repercussions of this young man's actions should not have been watered down because of his age, and especially not in light of the toll it exacted on his victim. Others might be calling for extreme punishment, but I am calling for appropriate response.