Let's first review the first study, a landmark experiment in

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Acta Psychologica, 129, 387-398.that it showed wide and significant cognitive benefits in adults over 60 years old who played a strategy videogame (Rise of Nations) for 23 hours.A team at the University of Illinois recruited 40 adults over 60 years old, half of whom were asked to play a computer game called Rise of Nations, a role-playing game in which you have to build your own empire: game players have to build cities, feed and employ their people, maintain an adequate military and expand their territory.Both the experiment and the control groups were assessed before, during and after the video game training on a variety of tests, and the "gamers" became significantly better - and faster - at switching between tasks as compared to the comparison group. Their working memory, as reflected in the tests, was also significantly improved and their reasoning ability was enhanced.Really remarkable results.The second study, in contrast,  Alpha Brain found no comparable cognitive benefits for college students in their early 20s who played the same game for the same number of hours, regardless of whether they play videogames often or don't. How come this contrast?In order to better understand this, I contacted Dr. Arthur Kramer, one of the scientists involved in both studies, to ask a few questions.  http://www.supplements4help.com/alpha-brain/