See, that ancedote tells me absolutely nothing. If he was rich, why did he have a roomate? Was this pre-riches? How in the world would you know he was a 'large

See, that ancedote tells me absolutely nothing. If he was rich, why did he have a roomate? Was this pre-riches? How in the world would you know he was a 'large' prescriber of Adderall? How would anyone go about making that claim? Did he happen to be a psychiatrist in a private practice and/or a specialist in his field? Was he in a lot of debt? I know it is an ancedote, but it doesn't really say much. As far as "I've never seen a biological study...". This goes for a lot of things. People only usually bring it up with things like ADHD or whatever favorite thing is viewed as 'over-diagnosed', though. In this case, a quick google search can get you information that explains the brain scan differences comparing ADHD to neurotypical kids - like this one: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3016271/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3016271/