http://www.gamasutra.com/view/feature/1524/the_chemistry_of_game_design.php?print=1

When I first started to study Game Design, I caught a lot of flak about it from various folks who saw it as a useless waste of time. This is an article from an industry website that discusses one of the more fundamental aspects of game design, and why I see it as such an intriguing field to be part of right now.

If we can get a more concrete understanding of the learning behaviors people exhibit while having fun it could have huge implications for education, physical rehabilitation, and possibly even treating psychological disorders and brain trauma.