Small effect size, and one I'd expect to be comparable to a lot of other things, like similar alcohol use, sleep deprivation, mood disorders, etc.
Hard as it may be for some to believe, not all people are trying to optimize for maximum brain function, evidence suggests that a vast swathe of humanity tries very hard to actively REDUCE their function on a recreational basis.
Hard as it may be for some to believe, not all people are trying to optimize for maximum brain function, evidence suggests that a vast swathe of humanity tries very hard to actively REDUCE their function on a recreational basis.