dude, who classifies if its illicit or not is the researchers, not the students. they aren't asked  "hey kid have you done any illicit drugs lately?" they are asked: cross with an x the drugs you have used. and yes, sure, modern kids with far less inhibitions and taboos, somehow, lie more in self-reported anonymous studies than they did 30 years ago lmao, where shame was real for using these things. you can't be a real person, either very old or very young.
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