Given my experience with ADHD, I'd assume that if you have a person who has ADHD, and for whom flight is one of their interests, that you would want them to have that ability to notice things with almost cat-like reflexes (which is one of the benefits I have personally experienced, on multiple occasions I have noticed an object start falling off a shelf and reached over to catch it mid-air). The stimulant medications tend to lessen these abilities. I want my pilot to be able to notice aberrations quickly and be able to respond to them quickly.