Please cite it. Every time someone claims this, they come back citing something laughably easy to disprove like The Bell Curve, which claims this, and is just an absolute mess of obvious nonsense:
Using deeply culturally and/or language biased IQ tests.
Using IQ tests that essentially just test the quality of education they received.
Sampling unrepresentative populations.
Using studies from an Apartheid state as an example of "a state without systemic racism".
Using tests that aren't IQ tests and the author explicitly say isn't equivalent and "converting" them with arbitrary systems.
Literally just making up data.
Cherry picking the worst data from studies which the original study explicitly calls out as less likely to be accurate.
Every correlation vs causation mistake you can possibly make.
Just discounting every environmental factor except parental socioeconomic status.
Assuming environmental factors are a result of genetic factors (which is literally just assuming their conclusion).
Regularly citing a literally white-supremacist funded source as unbiased.
I don’t care to get in some debate at all, but first you’d have to offer up a very precise question and not some general smear campaign. If it’s some of the sentences you’re arguing with upthread, I might agree with you.
Using deeply culturally and/or language biased IQ tests.
Using IQ tests that essentially just test the quality of education they received.
Sampling unrepresentative populations.
Using studies from an Apartheid state as an example of "a state without systemic racism".
Using tests that aren't IQ tests and the author explicitly say isn't equivalent and "converting" them with arbitrary systems. Literally just making up data.
Cherry picking the worst data from studies which the original study explicitly calls out as less likely to be accurate.
Every correlation vs causation mistake you can possibly make.
Just discounting every environmental factor except parental socioeconomic status.
Assuming environmental factors are a result of genetic factors (which is literally just assuming their conclusion).
Regularly citing a literally white-supremacist funded source as unbiased.