The thing with this area mate is the time scales... The original papers that were submitted into the psychology journals were around 2001/2, the games have intensified over the last 5/6 years in there realism, however, the effects won't be seen in 1st, 2nd and 3rd generation gamers but in 4th, 5th etc..... The reason is down to cognitive development in the service user, for example, those from the 1st pot (1st, 2nd and 3rd) are less likely due to ones age and ability to regulate through comparison, those from the second pot, confuse reality due to lacking the social development, normally because of age constraints.... This is indeed theory, a brilliant psychologist named Bennat, hypothesises the above... I'm inclined to agree pal!!!!