I hope your not pushing that whole violent video games cause such detrimental effects on kids crap.

But, re: Tigger's point, I'd imagine that if you are screwed up enough to be affected to the point of killing someone on account of playing a game, the idea that these urges will go away at your 18th birthday is laughable.

Age-related brain differences pack a real-world wallop, in his view. "From a biological perspective," Fassler asserts, "an anxious adolescent with a gun in a convenience store is more likely to perceive a threat and pull the trigger than is an anxious adult with a gun in the same store."