sekio
Bluelight Crew
When they mean healthy subjects, do they mean these subjects have no learning disabilities (ADD/ADHD in particular)?
I think it's healthy neurotypicals. http://www.psych.upenn.edu/~mfarah/pdfs/MAS enhancement.pdf
Some further points.
in the aggregate, the evidence supporting stimulants’ beneficial effects on healthy cognition is mixed. For example, Chamberlain et al. (2010) reviewed studies in which CANTAB tasks had been used to assess stimulant effects in patients and healthy control participants. “acute doses of medication improved aspects of cognition, though findings were more consistent in subjects with ADHD than in healthy volunteers.”
[...]
Our study was designed to overcome several challenges that have hampered previous attempts to answer this question. It had sufficient power to detect a medium-size effect for any one measure of cognitive performance. We nevertheless failed to find enhancement with any of the 13 measures we used. [...] Despite the lack of enhancement observed for most measures and most participants, participants nevertheless believed their performance was more enhanced by the active capsule than by placebo. We conclude that MAS has no more than small effects on cognition in healthy young adults, although users may perceive the drug as enhancing their cognition.
As "offensive" as this sounds, it seems to me some percentage of people are on amps because they subjectively feel it makes their life better even if it doesn't actually pose any real benefit in the numbers. Either they just need the amphetamine stimulus to get into 'work mode' or they lack the confidence/drive to accomplish tasks that would be difficult w/o amphetamine.