Earlier quoted context omitted.
Have you looked at gwern's nootropic page? I've seen articles from it posted on HN on occasion. He seems to be doing a pretty solid job of testing the potential effects of various nootropics on himself. His efforts to double-blind himself and using Dual N-Back for testing effectiveness indicate he takes this topic seriously, and is trying to be very scientific about it. (I say "trying to" because I'm absolutely cluel…
I just have to comment that in his page, I disagree on using dual n back as a measure of mental ability. As the mind repeats a task over and over it learns what to expect. I personally view n-back as any other repetitive task, only it is mostly in the mind; the more you whittle, the better you will be at whittling. If you look at the wikipedia page [1] you will see that there have been papers both for and against n-b…
For instance, if you do Dual 3-Back for 3 weeks with an identical supplement regimen, you can graph the progressive improvement over time. That'll give you a semi-baseline, and if all you change (in your life) is a supplement from that point, you can attribute the alterations in your typical N-Back to something supplement related.
I know, placebo effect, etc. It's not causation, just correlation. Just because correlation gets pimped out on the street corner by people with agendas doesn't mean we should ignore him. We should just be careful when we utilize his services.