Get ready: There’s a new Grand Theft Auto game about to roll out this week, and we’re probably in for a burst of discussion about violent video play. I’ve never found it likely that bloody video games cause bad behavior in kids, but then again, I’d also never pass any of my old copies of the games to a child. So I’m a little unsure about how to react to a recent study showing that the game is more popular than any other among 12- to 14-year-old boys.