Games to Reduce Agression

Here's an interesting post about using video games to reduce aggression -  http://scienceblogs.com/cognitivedaily/2009/04/a_video_game_to_reduce_aggress.php. The game in the article is pretty simple (showing words).  The "priming" phenomenon has also been written up in Dan Ariely's book Predictably Irrational (one of the TED books last year).  These techniques are easily integrated into video games.  Reducing aggression would certainly be meaningful.