It's an interesting test for sure. I do similar with brain training on the 3DS, and though I've always been mindful of the various factors affecting my performance, I've never gone the effort of mapping them vs. my results.
As noted, as long as you don't start drawing any conclusions before you've played consistently to eliminate practice effects (getting better at the games) as best you can, it's fairly interesting and valuable stuff.
As noted, as long as you don't start drawing any conclusions before you've played consistently to eliminate practice effects (getting better at the games) as best you can, it's fairly interesting and valuable stuff.