I don't know why people still claim ADHD is "untestable" in adults, when you can just try a non-euphoric stimulant and see if they amp you up or chill you out.

I don't know why people still claim ADHD is "untestable" in adults, when you can just try a non-euphoric stimulant and see if they amp you up or chill you out. I suppose, that test isn't useful for doctors trying to sort out people who want to get amped up on stimulants from those with ADHD, since it relies on subjective reporting, but if you are curious for yourself it isn't hard to find out. (Note that there can be lots of other causes of executive function disorder, so not everyone with executive function issues responds to stimulants. But for ADHD in particular we do kind of understand the biological basis now, and the treatment has a different effect in people without that particular dendrite abnormality.)