> 1/5 of the population suddenly increases output
I’ve heard studies show Adderall doesn’t help people without ADHD… googling now seems to confirm. Apparently lots of people, especially college kids, take it thinking it will help, but it actually can slow them down.
My understanding is the amph. works the same in everyone - minus the edge cases.
The main difference is that the magnitude is greater in people with ADHD than those without. A reduction in hyperactivity, for example, is not really apparent in people that are not overtly hyperactive to begin with.
Beside, ADHD is kind of a nebulous label for a lot of symptoms. Having ADHD vs. not having ADHD is not exactly binary.
Not a study, but this article was enjoyable. Some of the experiences there say it made their writing overly perseverative on detail, too expansive, too many edits and re-writes. Sort of faster in the short term but slower over the long term?
https://pioneerworks.org/broadcast/club-med-adderall