>> Don't underestimate the power of neuro-plasticity.

I don't. I make use of it all the time, and have changed even my physical structure in ways that most people could not credit even by an exercise of imagination.

I meant only that the study was simplistic. And it appears that you do not disagree with me on that point, given that you are lumping in affirmations, etc., with "other things", "over a long period of time."