Violent video games, far from causing psychological disturbances, are beneficial to the mental health of children. Experiments show visual, tracking benefits from video games, particularly shoot-em-ups: US scientists Shawn Green and Daphne Bavelier, were commissioned to perform a study in 2003 by the National Institute of Health. According to the BBC, "they found that regular players of shoot-em-ups, such as Half-Life and Medal of Honour, have much better visual skills than most of the population1. The researchers have shown that gamers were particularly good at spotting details in busy, confusing scenes1. Experimental tests show positive focus effects of video games: US scientists Green and Bavelier found focus benefits from shoot-em-up games, even to the extent that they could be used as a beneficial tool to treat Attention Deficit Disorder2.  1 BBC News. (2003, May 28). Video games 'good for you'. Retrieved June 2, 2011, from BBC News:  2 Olsen, S. (2005, November 8). Attention deficit disorder? Try video games. Retrieved June 2, 2011, from CNet: