Longer you play, the more hostile you feel: examination of first person shooter video games and aggression during video game play
Aggressive Behavior, Volume 33, Issue 6, Pages 486 - 497
http://www3.interscience.wiley.com/cgi-bin/abstract/114802796/ABSTRACT
Christopher P. Barlett, Richard J. Harris, Ross Baldassaro
"This study investigated the effects of video game play on aggression. Results showed a significant increase from baseline in hostility and aggression. This study adds to the existing literature on video games and aggression by showing that increased play of a violent first person shooter video game can significantly increase aggression from baseline."
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