Authors of Grand Theft Childhood spoke on G4 about their research findings. Apparently, no one ever researched normal gameplay behavior before. I find this particularly interesting because game studies in all disciplines rarely discuss games as a realworld activity. In this video they talk about the misconceptions surrounding violence and games. What they found was that highest marker for behavioral problems are gamers who play only M rated games more than 15 hours per week and those who play no games. The argument they are making on their data is that gaming is a marker of social competence for boys. To me, this supports an understanding of gaming as a social phenomenon. Seems then that this reinforces the recent emphasis on social gaming.
check the video on Kotaku