Marijuana, it seems, is not a performance-enhancing drug. That is, at least, not among young people, and not when the activity is learning.
A study published Tuesday in the Journal of Clinical Psychiatry finds that when adolescents stop using marijuana — even for just one week — their verbal learning and memory improve. The study contributes to growing evidence that marijuana use in adolescents is associated with reduced neurocognitive functioning.
How much money was spent on this study? It's not like anyone who was forced to hang around the stoners in high school couldn't have told you this for much less.