The more you play, the more aggressive you become: A long-term experimental study of cumulative violent video game effects on hostile expectations and aggressive behavior
Journal of Experimental Social Psychology (2013) - Comments
doi: 10.1016/j.jesp.2012.10.016  issn: 0022-1031 

Youssef Hasan, Laurent Bègue, Michael Scharkow, Brad J. Bushman