"'Our latest findings suggest Tetris is still effective as long as it is played within a critical six-hour window after viewing a stressful film,' said Dr Emily Holmes of Oxford University's Department of Psychiatry, who led the work. 'Whilst playing Tetris can reduce flashback-type memories without wiping out the ability to make sense of the event, we have shown that not all computer games have this beneficial effect – some may even have a detrimental effect on how people deal with traumatic memories.'"
http://www.physorg.com/news/2010-11-tetris-flashback-reduction-effect-common....
