I'm hoping this article left out a lot of criteria from this description of the methodology: "The study analyzed the way 3,305 people, aged 16 to 44, played th

I'm hoping this article left out a lot of criteria from this description of the methodology: "The study analyzed the way 3,305 people, aged 16 to 44, played the game against a single random opponent of similar skill, in order to measure the gamers' cognitive motor performance." The "similar skill" is an incredibly subjective measure. Especially if they relied on the user's scores recorded on battle.net. As someone else noted, they really need to control for the fact that younger people have a lot more free time to play and practice. A good follow-up study would be to follow a set of gamers for a couple of years as they cross this hypothetical threshold to see if the results still persist and the overall performance decreases. Of course, they'd need to control for a number of environmental factors and hardware differences, as gaming rigs change quite quickly.