so this guy Christinelire, increase his intelligence with just caffeine??? i dont normally agree with Lumnosity games in increasing intelligence since I think you just become good at playing a game, not increasing intelligence. The only true game that helped me increase intelligence is DUAL N BACK!
Caffeine surely helped, but we don't have enough data to know how much. Moreover, he claims that he's observed a general enhancement in mental performance as he outlined above, entirely apart from his one great Lumosity session (with no further sessions since). Lumosity is marketed as a "brain gym", but I think its real value is as a relatively objective assessment of mental performance. And although there is certainly a training effect resulting in improvement in scores, this ceases to apply after a month or two. His scores seemed to be flat enough that a one-day jump to 1570 would have been very unlikely, caffeine or not.
So pending more data, we have no good grasp of dihexa's role here.
BTW the BBC actually did a study of brain games with Cambridge Brain Sciences (in this video) wherein they found that several weeks of training were barely better than browsing the Web in order to answer obscure questions for the same amount of time. So they claim to have debunked brain games as a vehicle for mental improvement. But what they actually debunked was the economic utility of brain games, because both experimental and control groups showed improvement on a variety of cognitive tests, albeit a small one. But with 11,430 participants, the small change appears to have high statistical significance. (The control group should probably have been required to watch made-for-TV dramas or some such vacuity.)
how you figure that a little improvement had a large impact? i have been doing luminosity for a couple of years...i train hard and i had the same difficulty in learning new tasks. the extra cognitive function or working memory that i was supposed to get was never really there.
Dual N Back worked perfectly though...I did notice an increase processing speed and also thinking....if only it could help me in verbal/speech impediment...still searching for that....i heard the racetams helps with that....the weakest pariracetam but i have to take higher doses.