Comment by ccppurcell

There's good evidence that psychedelics can increase neuroplasticity, you can web search those keywords. It would be surprising if it didn't at least sometimes help with cognition. On the other hand, a colleague who works in the field said to me "who says plasticity is good?" I've yet to ask him to clarify this; it challenges my assumptions but he is way more knowledgeable than I. There are also studies into psychedelics and creativity (as in problem solving, rather than painting) which again you could look up. The one I'm thinking of in particular was before the war on drugs and rather flawed methodology. But there have been more recent studies.