"Video Games May Not Improve Cognition" Duh! Video games are programs. The are written and designed so the USER is forced to only do a unique thing to get the PROGRAMMED result. Video games are WROTE learning at best. Sorry pwn'ers, if you get high scores...it is because you played and practiced more than the next guy. You really don't have to think hard.
Try getting an 'A' in Differential Equations and Thermodynamics, going to football practice and almost passing out from running, reading a 500 page classic in one week and writing a paper on it the last day, attending to your heart-broken girlfriend...whose dad died, and working 30 hours that SAME WEEK at a law firm. That my friends, makes you develop cognitive skills that outweigh sitting quietly at your desk manipulating a PROGRAM that says shoot here, you get a kill. So what if you trolled some wasteland and collected jewels to increase your magic points. It is a program and tells you what to do and YOU DO IT. That does not take much thought.