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naraburns  nihil supernum  2yr ago (text post)   36582 thread views

Culture War Roundup for the week of October 24, 2022

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To begin with: because for most would-be listeners, supporting the opposite camp equals approval of one's family and one's people getting discriminated against (the nigh-inevitable alternative to HBD being acceptance of unredeemed racial guilt). Some are turned off by this; others are quite happy.

I think the honest way of addressing this is "fuck your anti-white racism", not coming up with elaborate justifications that were never epistemically serious to begin with.

HBD/Blank Slate is a political question more than it's a scientific one, a question of whether a civic religion founded on this stated promise of equal innate potential (or at least absence of substantial between-group differences) is needed for the prosperity of a polity and reduction in individual suffering; it's a question of oughts. Turkheimer et al. wear their oughts on their sleeves, adversarially, so it's a bit of a double standard to dunk on HBDers for failing or refusing to understand a peripheral aspect of «is».

This sounds like a scientific metapolitical question as much as it sounds like a political one. See the end of this book review for more discussion.

I have read a decent amount of your writing on the topic today, debate and adjacent content; the more I was reading, the stronger was the feeling that this'll be a fruitless debate. Your writing over the last year displays a trend towards isolated demands for rigor against HBD outlook (for unknown reasons that I assume, for now, are self-preservation and career strategy, a la Abdel The Backstabber, but might be just autistic perfectionism and purity spiraling; take your pick at which is less charitable).

I don't think I have an isolated demand for rigor towards HBD. In other places than the linked ones I regularly challenge anti-HBD. The issue is that neither side wants to be rigorous aka both sides just want to make things up with studies that support their general vibe without checking whether those studies are actually of any evidentiary value.

Now to be clear, the faults of HBDers are not big. [...] Your two examples aren't damning.

Your thread on effort and application of instrumental variables seems to sidestep the problem of scores influencing perception of effort, and anyway it doesn't affect the debate in absence of good evidence for differences in incentives&effort

If scores influence perception of effort, then it would lead to a downwards bias in the estimated effect, not an upwards bias. Also it is not really mathematically plausible that the direction of causality is reversed because that would require an effect size of around 2, whereas unless there are shenanigans going on they should only go up to 1.

And yes I agree that it would be ridiculous to say that the racial differences in IQ are due to differences in effort. The effect of effort is fairly small, so you would need a humongous difference in effort to cause it. The problem is that HBDers do not separate this question from the question of whether effort affects IQ scores, and so they say stupid things like that effort doesn't matter for IQ in order to protect the notion of race differences, when really the obvious answer should be "yes, effort matters but it doesn't explain race differences".

(and, well, whatever happens with low-stakes online IQ testing, people try «as hard as they can» in contexts relevant for long-term life outcomes or even on serious IQ tests).

I don't believe that. I often didn't try as hard as I physically could on exams. For instance once I was done with exams I might leave earlier if allowed instead of checking over my answers for errors, where of course if I had checked over my answers I would inevitably have found some errors and thereby increased my scores. I also never really prepared for exams ahead of time.

Now to be clear, the faults of HBDers are not big. [...] Your two examples aren't damning.

Your triumphant post on the environmental null hypothesis is… inconclusive, since it doesn't bother comparing models following from theories on their predictive merits (and also other twins and pedigree schemes). You can't just «call» ENH like you so often do on Twitter, and certainly can't just assume that nobody accounts for measurement error, that all causal effects will generate genetic correlations, and thus that the usual HBDer touting of gen correlations/gen confounding is invalid.

First, it's phenotypic null hypothesis, not environmental null hypothesis, i.e. if someone is smarter due to having a bigger brain and this bigger brain makes them do better in exams and therefore get more education, then that would be weird to call "environmental"

Secondly, while I can't assume that nobody accounts for measurement error, I can assume that the overwhelming proportion of studies don't account for measurement error, because I've seen that they don't. For an example in the case of personality, see how this shows almost all twin studies on the heritability of personality to be wrong: https://emilkirkegaard.dk/en/2017/02/getting-personality-right/

And I can totally assume that causal effects between individual difference variables generate genetic correlations between them (as long as they are heritable, but remember, everything is heritable). I gave you the theory and a simulation for why; if you disagree then show me a hypothetical counterexample where there is a causal effect but no induced genetic correlation. This is where I really consider it a big, damning fault, because this is really basic stuff.

A failure to understand the phenotypic null hypothesis is the same tier of error as an environmentalist who assumes that any difference in outcomes must prove that there is racial discrimination. No! Racial differences in abilities also predict racial differences in outcomes. Similarly, nonbiologically mediated/moderated causation predicts heritability and genetic correlations too, not as any sort of bias or measurement error or anything, but simply from the definition of what heritability is. If you don't accept this then you are not seriously engaging in the debate and no better than the environmentalists.

Now it's perfectly reasonable to raise questions about genetic confounding. It's just idiotic/dishonest/??? to say that genetic correlations prove genetic confounding.

Take any actually published model emphasizing environment (i.e. an X factor creating race differences – I mean, okay, the gay-bullying-mental illness stuff at least proposes a half-legible causal pathway), and subject it to scrutiny next to a genetics-first one – most likely, it'll fall apart first.

I am not bringing up the phenotypic null hypothesis as being a debunking of the HBD view on racial differences in intelligence. I agree that it doesn't debunk the HBD view on racial differences in intelligence.

I am bringing it up as a basic fact about heritability how heritability works that HBDers fail to understand/fail to engage with.

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