"A recent study performed on the University of Toronto campus with participants selected by responding to a flier offering $5 for participation, revealed that 92% of all Canadians are students at University of Toronto…"
(This is a joke; I suspect sociologists have some way of correcting for this already)
(EDIT: Note I am not saying I believe the way sociologists have of correcting for it *works*.)
@mcc uh IIRC this is a “joke but not really” in psychology and social sciences.
The joke is “add ‘among mostly 18–22yos with the social status to be in college’ to every psychology paper”