I don't know about some of those studies about video games and stuff. I remember some time back actually looking into some to see the specifics. One of them reached a conclusion about violent video games because they had the participants play Tetris and then Doom and found their heart rates and stuff were more affected by playing Doom. Like, no shit, but I don't think violence is the only factor in that. When I finally beat the black car in Ridge Racer I could actually feel my heart beating afterwards.