Does this mean Adderall/Ritalin really does make you smarter/more creative? As opposed to the folk wisdom that it increases your focus at the slight expense of

Does this mean Adderall/Ritalin really does make you smarter/more creative? As opposed to the folk wisdom that it increases your focus at the slight expense of creativity? Of course, this is assuming that creativity plays a role in chess, which depends highly on whether we are studying amateurs as opposed to grandmasters.