|
> IQ scores are heritable: that is, within populations, genetic variation is related to variation in the trait. But a fundamental truism about heritability is that it tells us nothing about differences between groups. Even analyses that have tried to calculate the proportion of the difference between people in different countries for a much more straightforward trait (height) have faced scientific criticisms. Simply put, nobody has yet developed techniques that can bypass the genetic clustering and removal of people that do not fit the statistical model mentioned above, while simultaneously taking into account all the differences in language, income, nutrition, education, environment, and culture that may themselves be the cause of differences in any trait observed between different groups. This applies to any trait you could care to look at – height, specific behaviours, disease susceptibility, intelligence. So I think we got fundamentally different things from that article. You see "between-population differences aren't genetic". I see "we don't know if between-population differences are genetic or environmental, and with our techniques we don't think this is knowable". Which, funnily enough, matches this quote of Hsu's pretty strongly (quoted elsewhere in these comments) > "I've always said that I'm agnostic on whether... so there are observed test score differences between groups, I think that's clear, you can't deny that. > The causality of that, whether it's partially due to genetics, I've always been agnostic on. Not because I think it's impossible, but because it's such a charged thing we should really make sure the science is solid before we speculate. We shouldn't randomly speculate on something that sensitive. > But even just not being willing to categorically rule out that God could have created us with average group differences has gotten me into trouble. And I think that's just absurd. So for someone to attack me for saying 'We don't know the answer to this question, let's do the science first and then talk about it.' Even that position is actually not tenable in the current social justice warrior political climate." |