There are a number of experiments I want to do to attempt to improve my cognitive function, such as dual-n-back training, experimenting with nootropics, sleep patterns, etc.
How can this sort of thing be quantified? Are there tools available that don’t bias results (e.g. taking the tests more than once raises score by just making you better at taking the test)?
Thanks in advance. Really interested in the notion of “quantifying cognition” but am totally new to it.