You might want to look into some studies done on those studies – there are IQ tests that historically (and sometimes presently) had culturally-ingrained aspects to their questions that made it hard for minorities and newcomers to answer properly. E.g., IQ tests with questions about baseball that assume the test-taker knows how many innings are in a game, how many outs/balls/strikes to get a player out, etc.
Lol ok, yeah, that’s probably what it was.
You might want to look into some studies done on those studies – there are IQ tests that historically (and sometimes presently) had culturally-ingrained aspects to their questions that made it hard for minorities and newcomers to answer properly. E.g., IQ tests with questions about baseball that assume the test-taker knows how many innings are in a game, how many outs/balls/strikes to get a player out, etc.
Wikipedia seems to have a lot to say on it, including some of the criticisms.
But generally speaking you’re probably looking at what’s mostly a correlation, not a direct causation.
Bad questions, so, useless IQ tests … all this quite a bit sad, yes.