> The basic effect is an increase in Norepinephrine interactions but the effect that has on people with ADHD is obviously very different.
I've heard it described as a difference in magnitude. If a person with ADHD has an arbitrary "focus" score of 5/10, and a normal person has a focus score of 8/10. If a stimulant brings them both up to a score of 9/10, then the effects may appear more noticeable in the ADHD person because a 4 point jump is typically far more apparent than a 1 point jump.
I've heard it described as a difference in magnitude. If a person with ADHD has an arbitrary "focus" score of 5/10, and a normal person has a focus score of 8/10. If a stimulant brings them both up to a score of 9/10, then the effects may appear more noticeable in the ADHD person because a 4 point jump is typically far more apparent than a 1 point jump.