I would challenge this statement. I have seen no evidence that a stimulant makes someone...smarter. If I have time I will investigate this notion!--provided I don't forget or procrastinate that is :-)

How would your friends define "performance enhancer"? Do they even have a definition? To to say that Adderall is a performance enhancer it would have to be shown to increase some measurable cognitive performance in "normal" non-ADHD subjects in a randomized control trial. I think people make a lot of assumptions about stimulants that there is little evidence for. If you're not intelligent and motivated to learn something...just taking a stimulant is not going to enhance your chances of passing a written exam.

To me stimulant medication is a performance equalizer, not enhancer. Next time your friends make ignorant statements like that you should show them why your an "A" student. Challenge them to defend their statements or stop talking like an ***.

As for you needing less time to study...Maybe you only needed to study less hours, because you were able to actually study. Instead of: getting up every 15-20 minutes, take 10 minutes to straighten your works space and settle back down, or continually be distracted by minor environmental stimuli that they don't even notice.