[anothernewdude]

It doesn't actually. Studies have shown stimulants worsen focus for people without ADHD. With research suggesting that they are better at filling a deficit than enhancing performance.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3489818/

[FFRefresh]

I just read through the study you linked, and it seems like you are mischaracterizing it.

Here's a direct quote from the study you linked:

> Stimulant drugs do improve the ability (even without ADHD) to focus and pay attention.