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I just created an account on The Motte to PM someone a question, and afterwards I started browsing through some links and found this post in the vault: Belief Against an Intelligence Gap / Why the Woke Won't Argue: A look at Turkheimer and HBD research.
Now, a year ago or so, I would probably have strongly agreed with this post. But recently, I've come to a totally different conclusion: HBDers tend to totally refuse to engage with basic principles of the debate. I say that as an HBDer who has started interacting with other HBDers, and correcting when they make mistakes. Two core examples I have in mind:
Heritability simply does not mean what a lot of HBDers want it to mean - because of the phenotypic null hypothesis. You often see HBDers declare success when yet another twin study shows that yet another variable is highly heritable, or that there is a genetic correlation between two variables which are usually suggested to be causally linked to each other. In the latter case, I often see HBDers act as if the genetic correlation proves that there is genetic confounding between the two variables, which is a ridiculous suggestion if you think through the actual math. It's perfectly reasonable to say that the debate struggles with progressing because anti-HBDers aren't properly engaging with HBDers, but it would be a lie to also pretend that HBDers aren't also guilty of lack of thought and engagement.
HBDers often signal-boost nonserious or dishonest studies. My go-to example of this is this study on effort and IQ, which claimed to find that effort does not matter for IQ scores. This obviously massively contradicts common sense, and indeed when I took a quick look at the study, its data actually totally supported the notion that effort matters for IQ, and it's merely that the researcher (who is a well-respected leading IQ researcher!) analyzed it wrong (see my analysis in the thread, or perform the analysis for yourself). The researcher still has not changed his mind on the flaws of it, and I regularly see the study pop up on my timeline. If HBDers are going to boost these kinds of studies and ignore critique of them, then why should anyone listen to HBDers?
So, what view would I suggest? A far more symmetric view: Leftist inclined people want to create racial equality of outcomes, and they therefore boost whichever kinds of rationalizations they can come up with for the achievability and justification of such equality. Rightist inclined people want to preserve racial inequality of outcomes, and they therefore boost whichever kinds of rationalizations they can come up with for the unachievability of equality and justification of inequality. There's some honest people on either side who have been swept up in the drama, but in terms of the direction of the energy which drives the whole debate, this is what lies underneath it.
"phenotypic null hypothesis", according to Google Ngram, does not appear before 2002 and it's usage going after 2010. It's a neologism.
https://books.google.com/ngrams/graph?content=phenotypic+null+hypothesis&year_start=1800&year_end=2019&corpus=26&smoothing=3&direct_url=t1%3B%2Cphenotypic%20null%20hypothesis%3B%2Cc0#t1%3B%2Cphenotypic%20null%20hypothesis%3B%2Cc0
And disingenious one. For testing medications, null hypothesis "it doesn't work" is useful because we have voluminous history of ineffective medications. We don't have prior history of controlled experiments on population IQ differences. It's like theists requiring atheists to prove.
Jack and Jane both collected some stones on beach. Compute average size of stone each of them collected. Must they be same, exactly to 10-digit after comma, unless proved otherwise?
As been said, it is looking at rightists under leftists theory of universe. What about "rightists don't want certain kind of government-mandated redistribution which give a net harm to society" or "rightists don't want their bikes stolen"?
Now I am going to violate rules and say that intelligence is clearly biological. It's not controversial to say that fish are smarter than jellyfish, and crocodiles are smarter than fish, and rats are smarter than crocodiles. It's only when feelings are hurt it requires some "phenotypic null hypothesis". Yes, intelligence has long causal chain, but so are many biological phenomena.
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This is related to why 'account nags' are so persistent - having an account really does lead to using the platform more! (it also hands over your email for marketing spam).
Most HBDers do misrepresent studies, and misunderstand a lot of the data they use, and make poor arguments with poor conclusions. AFAICT this is universal in academia though. That's not to say that it's fine when HBDers do it, or minimize it at all - it is incredibly awful, disgusting, etc when anyone does it, and it's pathetic how universal it is. But it's not like "both sides really want a position to be true, so they push their side" is the only reason the "science" is shit. Priming wasn't better, much of psychology is still not better. Many HBDers really did think equality was true before they looked at the data or society, and both sides genuinely do believe their side to be true and have all sorts of justifications for it.
If we look at individuals instead of races, there's a reason scott alexander's father was a smart doctor, his brother was a gifted pianist who "... was now by far the best student in my Introductory Piano Class, even though he had just started and was two or three years younger than anyone else there ... a little while later, Yamaha USA flew him to Japan to show him off before the Yamaha corporate honchos there ... one thing led to another, and my brother won several international piano competitions, got a professorship in music at age 25, and now routinely gets news articles written about him calling him “among the top musicians of his generation".
One of the funnier parts of HBD is ... if we should act on heritable intellectual differences between races in any way, we should probably do so for heritable intellectual differences between individuals too. And the latter clearly exist, and are critical drivers of all existing talent. IQ-selective immigration when? Well, that's not flying with the voters. An extra hundred million 100iq people isn't quite as useful as an extra 100k 140iq people.
Also, there's a reason yud and scott are jewish. How does that happen if race isn't related to heritable intelligence? 30% of nobel prize winners in math and hard sciences, etc
So "HBD" in that sense is still accurate? A liar may still tell truths, dirt may cover otherwise-pristine marble, etc.
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Sort of. What you call "left" wants equality of outcome it that sense they want the world as it is, only with all races equally represented in the position of power and wealth. What is wrong with billionaires is that there is not enough BIPOC billionaires.
See the great popularity of fiction set in alternate history where racism never existed, where British Empire was always racially mixed and racially tolerant, where people of all colors were equally represented among aristocracy and it was awesome.
https://en.wikipedia.org/wiki/Bridgerton
Looking forward to remake of Gone With the Wind, where Scarlett is black and slaves on her plantation, both black and white, are living in perfect harmony without any racism. It will be record shattering blockbuster, leaving Avatar and all capeshit products in the dust.
Nevertheless, such attitude would not be recoginzed as "leftist" by anyone in history before last decade or two.
"HBDIQ" fans did not came from ranks of Neo-Nazis, skinheads and white prison gangs - these people are absolutely certain about their racial superiority and do not need any bell curves, IQ tables and similar nerd shit.
HBDIQ came from rationalist, atheist, science loving nerds, who did their research.
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To people arriving late to this discussion, a couple of things might be helpful to know:
When tailcalled is saying "heritability doesn't mean what a lot of HBDers want it to mean", his actual argument isn't presented in his post. You'd need to go track it down through the link he posted of his substack. It basically boils down to a longwinded form of "correlation doesn't necessary imply causation", i.e. if parents and children show significant correlation on a certain measure, that doesn't guarantee it has a genetic outcome. A good example someone posted downthread would be "knowledege of the French language", which is highly correlated between parents and their children, but which obviously isn't genetic.
When tailcalled says "HBDers often signal-boost nonserious or dishonest studies", he's mainly referring to people doing this repeatedly on his Twitter posts". He's not really calling out anyone here, and importantly he's not necessarily saying this is an asymmetric problem with HBDers, just that some HBDers do it, which... well of course they do. There are knuckleheads on both sides.
So in the end, I think tailcalled is making points that are agreeable almost to the point of being anodyne, but he wrote them poorly enough that some people (including me, at least initially) are getting confused. On #1, we really shouldn't be forced to track down the basic gist of an argument on another website before the author starts claiming it's a big reason why the HBD-vs-Environment debate isn't advancing. On #2, I think a lot of people got the sense that tailcalled was an anti-HBD'er, but the opposite seems to be true actually. He seems to mostly just be patrolling the pro-HBD side for bad arguments as a way to advance discussion, not necessarily to dunk on the HBD side as entirely meritless.
Perhaps a better way of phrasing the phenotypic null hypothesis would be "correlation does not imply confounding" together with "causation does not imply unmediated or unmoderated causation". "Correlation does not imply causation" is certainly not it.
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I disagree with this presentation of my views. I am admitting that genetics is causally upstream of the heritable variables; the issue is that not every causal link in the chain from genes to the variable are meaningfully biological. I don't think the French example is an example of what I am talking about at all.
Yes. The thing that triggered it was going through the vault and seeing that a post going "haha, HBDers are so much better than antis" had been declared a "best of".
Yes, there's a severe need for patrolling for bad arguments IMO. Both sides seem to have turned into echo chambers.
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Hi again. You may not know it, but the author of the text in the vault, JB, is a bit of a meme here, an avatar of pig-headed intransigence and hubris, which lends credence to your words. Nevertheless, I can't see how your arguments justify disagreeing with him on this issue and indeed coming to a «totally different conclusion».
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.
And because whatever the faults of HBDers, the other side remains epistemologically worse. Turkheimer may have some legitimate scientific argument against between-group genetic diffs on g; his bottom line was still arrived at through moralizing. «We can recognize a contention that Chinese people are genetically predisposed to be better table tennis players than Africans as silly, and the contention that they are smarter than Africans as ugly, because it is a matter of ethical principle that individual and cultural accomplishment is not tied to the genes in the same way as the appearance of our hair.»
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».
Now to be clear, the faults of HBDers are not big. 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). 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 (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).
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. 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.
Like Bryan Pesta's career did: it took years of digging by concerned people, but this HBDer got caught on a technicality and made unemployable. He had tenure, too. As for the non-tenured faculty, we can have Turkheimer spell it out. Like Bird says, there is reason to be optimistic about the eventual result of such policies:
So there's no money in it; databases are getting closed off too; getting published is near-impossible (note that all those would-be publications deal with weaknesses of HBD research program that you lament). The paradigm is shriveling up and dying (though Hyde would beg to differ). HBDers' incompetence is the intended outcome of censorship. In time, you'll have every self-respecting scientist firmly in the blank slate camp; forget structural equation modeling, unrepentant HBDers won't understand trivial correlation coefficients, and will be wholly undeserving of attention. Won't this make your argument so much stronger? And I think this means your argument is ultimately uninteresting, as far as science or policy are concerned.
You seem to use a coarse-grained notion of politics involved, in stark contrast to your (not necessarily correct but hard-to-critique*) analysis of the technical side. Most «HBDers» are the opposite: laymen beliefs both in the heritability of human behavioral traits and in between-group differences owing to genetics overwhelmingly come from raw life experience, not from data analysis and literature; approval of papers is driven by priors and the general vibe. Likewise comes the understanding of political implications; the sense of unfairness in this debate; and the will to signal-boost arguments-like-soldiers of your allies. This sounds low-IQ, and it is, but consilience can be pretty powerful, and HBD is anything if not consilient; so they're justified in not worrying a lot about minor nitpicks.
As for what happens on the other side – let's say that your model doesn't follow from your text and may conflict with the data. Emil sums it up nicely:
Call me a misanthrope, but it's a priori implausible for people en masse to have consistent abstract preferences such as «equality» and «inequality». Equality is an obvious compromise; beyond that, people just root for the team and want their side to be on top or at least not trampled upon. Bluntly, white «rightists» want to not be punished for the underperformance of Blacks, and thus prefer an HBD narrative that puts them solidly below some groups, above others, and absolves them of their purported sin of systemic racism. «Leftists» have other ideas, so they obstruct research into between-groups genetic differences and enforce the conclusion of racism being the leading causal explanation by fiat.
But this obstruction, when perpetrated by knowledgeable people such as Kaplan or Turkheimer or Rutherford, is telling enough, and cancels out all incompetence HBDers and even run-of-the-mill racists may show.
basically, this is just another way of saying that every human has preexisting, indivisible SOUL and SOUL is more important than bodies
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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.
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 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.
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".
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.
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.
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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For those worried about HBD and optics or HBD being the majority, I have observed that HBD to some extent has fallen out of favor among the the right, even here. It's has sorta become the 'new atheism' but for 2021-2022 instead of 2011-2012 and for a much smaller audience. Something that was cool or trendy to believe, but has since fallen out of favor. Maybe it suffered from the same flaw of atheism, being that those who expounded it tended to be stereotyped as 'being on the spectrum', so to say, and thus were not good advocates for their cause. Maybe other reasons too...intellectual fads come and go for reasons that are hard to explicate.
pretty much, but I don't think it's laymen vs expert framing. I think it's that people accept HBD as broadly true yet make exceptions to it at the same time.
I remember 2 months ago making a post here, when this website first launched, arguing that kids who are slow in elementary school tend to be slow in adulthood too, which got -3 votes, but I am sure in 2017-2019 on the old site would have gotten at least +10; I know so because I made such posts in the past. People gave their anecdotal evidence of doing poorly in elementary school and then excelling in high school or college, and I argued that members of TheMotte, who tend to be high IQ based on numerous surveys by Scott and shared readership, are not at all representative of the 'general population'. HBD is about making population-wide inferences based on large quantities of data; individual exceptions do not disprove it.
But I have also seen the a third position, that being rejecting blank slate but still rejecting some aspects of HBD or that IQ is a signifier of human worth. There is also the the issue that being pro-HBD is possibly a stand-in for opposing the education system in America, which is based on the blank slate orthodoxy. The one-size-fits-all approach to America's education system education is wrong, but HBD is in part about trying to fit people to molds. I can see how these would conflict.
Who has HBD fallen out of favor for on the far right? They may be posting detailed IQ analyses less, but not because of any disbelief that blacks are lower iq or do more crime bc genes
Those called by far right usually don't like East Asian getting higher IQs, ditto Jews.
IIRC most are fine with east asian IQ and just deny jewish IQ, but they are still very interested in low black and asian IQ.
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*my impression of the topic is still best described in this quote:
Incidentally, this can no longer be found on the author's website.
The manner is recognizable enough, of course.
Phenotypic null hypothesis isn't an obscure methodological limitation, it is a fundamental property of concepts like "heritability" and "genetic correlation" which can easily be derived in simulation studies. If you don't understand how it works then you shouldn't use concepts like heritability and genetic correlation at all in the first place.
To be blunt: «Phenotypic null hypothesis [for the genetics of personality]» is a 2013 review paper by Eric Turkheimer, with 162 citations.
Turkheimer, like Lewontin before him with his «apportionment» and, more to the point, with his corn plants (cited by Ned Block here), is making a mountain out of a common-sensical molehill, in his case to bury the monster of HBD implications that have sprang forth (as he asserts, unreasonably) from his own First Law that he now seeks to reframe (as much is stated in the paper). Moreover, you both are sufficiently obscurantist and informal that it's hard to tell if you're gesturing at the same mountain:
vs yours:
Ok, and?
….The problem you talk about in your Substack post is real, although not nearly as damaging with regards to the sort of HBD beliefs most salient in the culture war and pro/anti-HBD debate (i.e. not the issue of bullied gays) as one could assume from careless reading of your initial post. (Besides, we have plenty of data such as admixture and, as of late, GWAS confirming simple additive model for the group difference – qualitatively similar to the case of height, not similar to gay-bullying and personality research). Measurement error is a fundamental problem; though as better-informed people remind us, there are methods, e.g. common pathway models, which help against it, and HBD research using those methods has yielded largely the same conclusions. It is also possible to directly test for AE vs ACE, precluding the sort of erroneous assumptions you warn against.
This is what is recommended is a textbook, literally, in crypto-HBDer Plomin's «Behavioral Genetics» 2012 edition (that is, anticipating Turkheimer's paper by a year). Consider p.157:
Or in a section about model fitting, pp. 380-390:
Plomin practices what he preaches, too – here's an example of a paper.
So yeah, those are real problems with real countermeasures. «Phenotypic null hypothesis» is a meme, and there are apparently only two people forcing this meme.
Again, what Turkheimer is doing here is not different from Lewontin's tricks, which are known to have been motivated by politics. It's uncanny how similar these situations are. In the entry-level «Making sense of Heritability, pp. 60:-62:
By all means, do promote statistical literacy and demand intellectual honesty among HBDers, do shame us for our sloppiness. Keep discussing this in terms of phenotypic null hypothesis, if you must. But do not gaslight. This argument, and in this specific formulation, is not Behavioral Genetics 101, but your recent contribution to the debate, and it's more of a rhetorical nature.
Ok, so regarding this paper:
According to Plomin, the goal of the paper is to test the plausibility of evolutionary theories are about environmental sensitivity by using twin studies to look for heritability:
This is very much the sort of nonsense the phenotypic null hypothesis is an objection to. Everything is heritable, and we have good theoretical understanding of why that is. It is thus of no evidentiary value to find that things are heritable, and this shouldn't be treated as a confirmation of evolutionary theories, which destroys the whole point of the paper.
Not so relevant to the phenotypic null hypothesis and I haven't looked at this in detail as it's a citation of a different study, but the cited study makes me suspicious: They didn't find any main effect of the treatment, so this was a subgroup analysis of exactly the sort that Scott Alexander has warned me about.
I acknowledge that common pathway models/factor models can control for some types of measurement error in some scenarios, but it doesn't really seem to work for personality traits (and therefore not for HSC either, unless HSC is an unusual personality trait). The appropriate way to do this for personality data is multi-informant data, which tends to lead to way higher heritabilities for personality, indicating that a substantial proportion of the nonshared environment component is measurement error, even with naive common pathways.
Plomin finds that all the "good" personality traits are correlated, i.e. emotional stability, extraversion, openness, conscientiousness and agreeableness are all positively correlated with each other. The model he chooses to apply to those correlations assumes that these correlations are substantive, but I believe that is an inappropriate model.
Correlations between the Big Five personality traits within a single rater appear to reflect a "Halo"/"social desirability" bias factor. The way we can tell this is because it fails to correlate across informants. I.e. while it's true that you rating yourself as more extraverted correlates with you rating yourself as more conscientious, you rating yourself as more extraverted does not correlate with others rating you as more conscientious. See for instance this paper.
Also I believe it's well-established that the different subscales of HSC differ from each other in their correlations with the Big Five, and indeed he replicates that finding in the study. However, this pattern of correlations is incompatible with the notion that the correlations between HSC subscales and Big Five is mediated by the HSC common pathway, which makes his later models very strange.
In conclusion, the Plomin study you linked is a fractal of bad study design. In many ways it's a good example of the necessity to further popularize the phenotypic null hypothesis. However, the study also has severe flaws beyond the phenotypic null hypothesis. This is cruxy to me: if you can convince me that Plomin's study is good, then I will likely grant that I was wrong about my point about the phenotypic null hypothesis, but conversely I think Plomin's study is really bad and I think Turkheimer has to deal with an endless stream of studies that are equally as bad as Plomin's here, so I think this serves as an excellent case study that explains why Turkheimer is so bothered by behavioral genetics.
I rest my case.
Wait is the study even by Plomin? The authors listed are:
None of whom seem to be Plomin.
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I don't have time to respond to this right now, as I'm on my phone, but just quickly skimming it, it looks cruxy to me. I will respond once I get home.
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I'm not claiming it to be damaging to HBD beliefs, I'm claiming it to be damaging to certain types of arguments and findings HBDers often make. There can be bad arguments for correct conclusions, and people who make those arguments should stop making them because it introduces noise and makes it harder to find the good arguments.
Again I posted various examples of people not properly applying the phenotypic null hypothesis. Let's zoom into one of them to understand the problem:
https://twitter.com/tailcalled/status/1475441032292667394
If one doesn't understand the phenotypic null hypothesis, then this is an exciting study. Researchers have shown jealousy and restricted sociosexuality to be genetic! And to be biologically linked to each other! In the past I would have been really interested in these sorts of results, as tying into all sorts of evo psych theories.
However, when appreciating the phenotypic null hypothesis, it's a boring study. What are we even supposed to learn from it? Obviously these variables are going to be heritable and genetically correlated, but this doesn't really tell us much.
If you disagree with this notion, then feel encouraged to make your case for why this is such an important and meaningful finding.
I don't think Turkheimer is being an obscurantist here. He's a leading behavior geneticist and an editor for a behavior genetics journal; he has to deal with an endless stream of papers that proudly talk about how they've shown this and that to be genetic. He's got excellent reasons to try to make people accept the phenotypic null hypothesis, since it's a huge piece of missing knowledge.
But these models are rarely used. Even from the "better-informed people", I have had trouble getting it for e.g. testing the causal effect of g.
This is badly powered when C is smallish, e.g. try computing the power requirement for C^2=0.01.
I don't see how GWAS additivity defends personality research, can you expand? In particular I don't see how phenotypic null hypothesis predicts nonadditivity.
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I'm not sure that hereditarianism vs environmentalism matters all that much if one believes that IQ scores are predictive across populations and that the interventions that have been tried do not last/work long term. (Not every environmentalist believes this of course.) It's like arguing over the Copenhagen interpretation vs the many-worlds interpretation of quantum mechanics when all you're doing is using the math to calculate the band structure of a semiconductor. But interpreting a model rather than using the model to make predictions seems like a secondary concern.
I think the distinction would be that hereditarianism mostly rules out the possibility of an intervention that could work even if it hasn't been discovered yet, while environmentalism would suggest that better or more extreme interventions would work (in the most extreme case, baby swapping, though I don't think any serious environmentalists actually advocate this). It's like the distinction between a mathematical theorem that has had no counter example found but is still open, versus a mathematical theorem that has been proven/disproven.
In the quantum mechanics case, there is no practical testable distinction and never will be, but in the HBD case there's the potential for a distinction in the future even if there's no meaningful difference for most people in the short-term.
Does it? Unless the IQ is directly influenced by the same genes that cause increased melanin production, protect against malaria, make your hair kinky or give you big flat noses and fleshy lips, you can always intervene. Even if the specific genes are unknown (and thus embryo selection will not work), it will take just a few generations to breed lower-IQ genes out of the population if you do it aggressively.
I guess that's a good point. So really it means hereditarianism rules out the possibility of behavioral interventions on the individual level but allows for genetic/eugenic interventions on the population level. Which are less useful given you can't apply it to already existing people, and generally less tasteful to most people, and harder to enact ethically. But theoretically tenable if you can pinpoint the actual IQ genes.
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This is true in the fascile way that an Oldsmobile can go as fast as a race car so long as you replace everything but it's body with racecar parts. Sure, granted, but this world is identical in every meaningful way than if it weren't true.
To stretch the analogy, GM is 100% allowed to revive the Oldsmobile as their performance marque.
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Sure, straightforward selective breeding and culling might work. But it ain't gonna happen.
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Look, there's a version of the progressive position that might actually be respectable. You can make a compelling case that human beings in basically any context have a very poor track record of resisting the temptation to use real or imagined differences in cognitive ability as a basis for a stratification in worthiness of basically any kind. You could furthermore make the case that there's not good evidence that we've outgrown these tenancies.
But if you're going to take the discussion of such differences off the table, they must be fully taken off the table—not remain half on and half off the table as they are now. You can't take the half off the table that involves the study of ethnic differences in cognitive ability but then leave the half on the table that involves forming public policy on the basis of a lack thereof.
It must be all the way on, or come all the way off.
I agree that it must be all the way on or all the way off, and I would prefer if [it was all the way on and people cared about figuring out the truth].
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Don't you arrive at these desires merely by adopting meritocracy as a core value? (In addition to different beliefs on the object-level question of whether or not racial differences in outcomes are primarily the organic results of natural differences in group abilities or primarily the result of societal oppression)
Are you suggesting that meritocracy is fundamentally a dishonest viewpoint? Or are you suggesting that most proponents of blank slatism vs HBD are not arguing as a result of an innate desire to see people justly compensation for their work? (If so, why? Isn't it just as infuriating to see people being unfairly elevated/oppressed from either point of view?)
If merit is heritable, then at some point we are rewarding the luck of being born to the right parents. There's nothing wrong to owning up to it and saying we are rewarding people based on how much their existence benefits the society, but the other side of the coin means there are people who are a net drain on the society.
Would it be any less a matter of luck if intelligence and personality was entirely determined by your kindergarten teacher, your pregnant mother's folate consumption, the people you happened to make friends with in school, and whether your parents read to you as a child? It seems like the only advantage of environmental explanations in this matter is obscurantism, it seems less like luck if you can't name the exact mechanism. But regardless of specifics the kind of person you are is going to be 100% luck by definition, because the only things we don't define as luck are the products of the choices you make, and your choices are in turn determined and preceded by the kind of person you are.
Even if the way personality worked was at the age of 18 you pressed a button to choose either "I want to spend the rest of my life intelligent and highly-motivated" or "I want to be stupid and lazy", it would still be 100% "luck" determining the social/genetic/coincidental factors that made you choose one button or the other. It would be good due to more people pressing the first button and all the very real benefits that would bring to humanity, in the same way that a successful genetic-enhancement/embryo-selection/sperm-donation/lead-abatement program would be good, but it wouldn't stop your nature from being a matter of "luck".
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'rewarding' puts a moralistic spin on it, when really it's just about maximizing efficiency.
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I would make this argument.
Here's a trope of environmentalist interventions. There's a hypothesis that some part of a selection process is preventing people from being justly compensated for their work. Then we directly fix that process by modifying it so that bias can't enter, and it has no effect or even makes the gaps bigger. The blank slatists then get angry and, if it turns out bias went the opposite way, advocate against fixing it.
Examples:
Gender blind hiring in Australia is scrapped after it turns out people were biased in favor of women rather than against.
Similar results in tech, and now gender blind hiring is out of favor. Ideology tests during the interview are popular, however.
SAT was originally meant to (and did!) nullify the bias inherent in high school grades. What if teachers were biased against lower classes, colored people, Jews, etc? They might give lower subjective grades and the SAT could find hidden talent. It worked great, but the hidden talent is predominantly Asian so now they want to scrap it.
Leftists oppose civil service tests of by the book firefighting skills, because blacks don't pass them. Instead they favor an oral exam where bias could creep in. ("By the book" means "according to the firefighter manual, which saw blade should be used to cut concrete". To be fair, the test in New Haven was badly copied from the NYC test and included a few questions about NYC geography which I guess is racist and invalidates the test somehow?)
There are a huge number of cases where leftists directly oppose changes that result in people being more justly compensated when that results in selecting fewer members of their favored groups. I can't think of any cases where they support it. Can you?
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Well so here are two models:
People start with meritocracy as a value and then try to figure out the factual questions about how abilities work.
People start with some policy opinions or alliances or something and then work to rationalize those.
Model 1 is debunked because if people were trying to figure out the factual questions, they would take basic concepts like the phenotypic null hypothesis into account, and they would be upset about having signal-boosted terrible studies like the IQ/effort one. It's possible that there is some alternative to model 2 that people follow, in which case you should feel encouraged to share what that alternative is.
No, model 1 isn't "debunked" and shouting "phenotypic null hypothesis" isn't the argument winner you seem to think it is.
The phrase "phenotypic null hypothesis" captures a point that is critically important to understand in these sorts of discussions. It can definitely be misused, shouting "phenotypic null hypothesis" is definitely necessary in contexts where people aren't taking it into account. If there are any of my tweets where you feel like I've abused it then feel free to point at them.
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So, first off, thank you for posting, and apologies in advance if the criticism I'll give comes across as too harsh. You seem to be trying to get more seen and read, so I'm going to try to help.
First -- your writing style doesn't work well for me. It's too abstract, and you don't clearly state your point. For example, your point #1 "Heritability simply does not mean what a lot of HBDers want it to mean - because of the phenotypic null hypothesis." What is your point here? What do you think "HBDs want it to mean"? What is the "phenotypic null hypothesis"? It's not good writing to make me chase down you thoughts, especially on other sites, especially before you've proven you're worth the work. I went to that site, and am not much more enlightened. You seem to somewhere make the point "Things influenced by genes often go though non-biological channels". Or maybe "things that look inherited aren't always". Sure, I'd say both are fairly non-controversial. A classic example of the second is, e.g. "speaking French" which looks inherited on the surface, but is clearly not biological. And yes, our environment and society mediate all kinds of things, we live in a complex interconnected world.
Do you have more of a point? I couldn't really tell (of course, that can be on me, but ... I've read and understood a fair number of others on this topic, but not your writing...) I really don't know what your code and diagrams at the end are supposed to show. Summarize your cool conclusion! E.g. "Even though X is not directly responsible, in a naive analysis it looks like it is, exactly like QQQ, which actually is directly responsible. Here's how that can play out ...". I think you're saying something like that, but you don't bother actually saying it (or I missed it).
In any case you sort of seem to be saying "we can't figure anything out" which both seems wrong, and kind of useless. Do you apply this to all such studies? Maybe we should -- I admit, I tend to write off almost of all psychological and sociological studies these days, because they seem so ideologically captured. On the other hand, between statistics, twin studies (and separated twin studies), and sibling studies, we seem to be able to do a pretty good job on some things.
Second -- you seem to be coming at this from a place of significant bias. "Rightist inclined people want to preserve racial inequality of outcomes," is an incredibly weak straw-man, it's basically "Everyone I disagree with is a racist". Is that really the best you can do, in terms of extending charity to the people you disagree with? I personally, like most of the others here, see the acknowledgement of group differences (and for what it's worth, I don't really care much if it's culture or biology, and both seem taboo anyway) as primarily an alternative for differing outcomes, without discrimination being the ONLY explanation.
I'm in tech. There aren't many women, nor many black people. This is ascribed to sexism and racism, which doesn't match what I've seen, experienced, or heard from the affected people (from women at least; I haven't asked many black colleagues about racism). I see my company following policy to massively privilege both groups, and to blame white cis-men for all the problems, and those both seem wrong, and even damaging to me (and to a number of people in the targeted groups, e.g. women who just want to be SWEs, and not feel they got their role because of their sex, and no, I'm not concern trolling, the suspicion around the privileging is real). I see differing interests (and maybe ability at the margins) and degrees as the main reasons for the differing representation, but we're not allowed to notice that, as "It's not the pipeline". James Damore got fired for trying to make this point.
You also see this censorship of blasphemy in the US, especially around crime, where apparently pointing out some choice statistics around violent crime is considered a hate crime. (Again, FWIW, I'd consider those stats more a cultural issue, but it's a pretty important one, upstream of the 'getting shot by police' issue).
So anyway, what I'd like from you, and I think would benefit you, is to tighten up your writing -- make your point first, then provide an explanation of it (it's a classic academic / systemic thinker error to do it the other way around). Make things more concrete. Work from a specific example and tie your points back to it. People are reluctant to trust generic models, as they are often used to lie (see Abigail Thompson's dissection of Hong-Page's "mathematical proof that diversity trumps ability". There's a nice discussion of it here
Also, try to be more charitable to your outgroup.
Also, as per the community rules, "don't attempt to build consensus", as you do when you write "... which claimed to find that effort does not matter for IQ scores. This obviously massively contradicts common sense,"
No, this doesn't "obviously massively contradict" my common sense, and I think many would disagree. In fact, I thought one of the main points of IQ tests, rather than "effort tests", is that neither effort nor prep makes much of a difference to them. Otherwise, for example, they wouldn't stay very stable over time (which I understand they do). Prep courses would also have more value, which I don't think do. Do you think when people can't make intellectual leaps others do, they just aren't trying hard enough in that particular moment? I think most would agree effort plays some role -- if I don't care or try at all on an IQ tests, and answer at random, I'll have a low score. If I try to be fast and disciplined, and use all my test-taking savvy, I'll probably (?) do better than if I just breeze through (although I wonder). But basically, once you're trying to do well, it's not really clear what "trying harder" even means on IQ test. It's not like pushing on a bar (and honestly, even for that the range where trying, vs training and genes and drugs, makes a difference, is pretty small in that moment. If I can barely do one pull-up, trying really hard might mean I do one, or two, but I'm generally not going to be able to do 10). So anyway, stop claiming consensus on things people will disagree on (especially things where your "consensus" seems to go against standard definitions).
I can't really comment on your main article, because I don't understand it beyond "assigning causation back to genes is tricky", which, I agree with, but, if that is your point, isn't a very exciting one, nor is the the pwn you seem to think it is. But if you have a different point, please state it clearly and simply, with a concrete example, and I'll try to address it.
Here are some examples of places where I'd bring it up on twitter:
https://twitter.com/tailcalled/status/1582021910853926914
https://twitter.com/tailcalled/status/1475441032292667394
https://twitter.com/tailcalled/status/1469700585691750403
https://twitter.com/tailcalled/status/1501945959487393805
https://twitter.com/tailcalled/status/1308739838045282304
The post comes from frustration with these sorts of situations. Importantly, it's not the specific interactions but instead that they are repeated and that often not much update happens. This seems like a point that should get signal-boosted more in a healthy community.
Yes, frequently scroll through my twitter and just fire of random quick tweets that debunk random social science studies. And I don't trust any social science studies until I've checked the methodology myself.
You're making assumptions about my ingroups/outgroups that aren't necessarily true. E.g. I've spent tons of money on HBD-aligned research, partly for motivations similar to what you describe here.
I was under the impression that the test-retest reliability of IQ tests is 0.85? If we assume that the test-retest reliability of effort is 50% (I suspect it's higher, but let's be generous to your side), and we go by the estimate that 8% of variance in IQ is down to effort, then that would mean that effort would introduce an unreliability of 50%*8%=4% to IQ tests. This is considerably less than the 15% unreliability that I've commonly seen, so I don't see how your argument is even halfway close to working out here.
Isn't the item level of IQ tests (which seems like the closest analogy to intellectual leaps to me) dominated by noise? So I'd say noise, not g or effort.
Also even if we ignore the item noise point, by the numbers I'm giving, test effort would only be 8% of the explanation for test underperformance.
It sounds to me that you are granting the basic point (effort plays some role), but then acting like you are disagreeing anyway? Is it a quantitative disagreement? If so, what is your estimate for the quantitative effect that effort plays?
Sorry, didn't check your Twitter, as I'm not on it, and don't like it (and don't like following links just to know what someone's talking about; I do like them for references).
I guess if you stated clearly what you think contributes to IQ scores then perhaps we'd mostly agree. As I think you say, accounting for 8% variance would be not too far from noise. That still seems quite a bit too high to me, and I don't really see how you clearly quantify 'effort' but would think to myself -- "whatever, if you want to believe that, go ahead it doesn't seem wrong enough to be worth fighting over". What I read from your initial post is that effort was more important than everything else, which seemed clearly wrong. You gave this impression by not specifying how much effect you thought that it had, and by saying people claiming it didn't have an effect "obviously massively contradicts common sense," which is a very strong formulation.
FWIW, I expect a very asymptotic-type curve, that rises extremely sharply from [answered questions at random without reading them] to [did test pretty normally], and then is pretty flat. It's like (but not quite as extreme) saying the kind of pen you use matters, because if yours is broken, or breaks half-way through, you'll get a lower score. So effort is not very interesting. But sure somehow accounting for 4% of the variance is plausible (sorry, to me 8% really seems too high, I'd think how well I slept, the questions I got, my mood, time of day, my pencil, and a bunch of other things would play a larger role than nebulous 'effort'). You seemed to be implying that means IQ tests are meaningless (and apologies if I misread it, again, please stately plainly your point so that doesn't happen as often), which that doesn't seem like a strong argument for. If that's not what you're implying, what is your point in bringing up effort?
I think it would be best to read what people are saying before responding to them.
Sorry, the point about how it "obviously massively contradicts common sense" was not meant to be interpreted as a measure of effect size, it was meant to be interpreted literally: as an expression that if I went out and told people that IQ tests don't depend on effort (as HBDers wpuld have me do), then people would conclude that I am delusionally worshipping IQ tests - and as I showed in the thread, it appears that they wpuld be right to conclude that.
🤷♀️ I just went with whatever quantification chosen by the leading IQ researcher whose study got signal-boosted. It's quite possible it's bad as I didn't look into it in detail, but if it is bad then I feel like that also reflects badly on HBDers for signal-boosting a study that uses a bad measure.
Those might be correlated with effort. Mood in particular seems likely mediated by effort.
I don't really agree that effort is particularly nebulous of a concept. Have you never had the experience of just quickly marking down your first thoughts without wanting to bother thinking them through and not double-checking that they are right?
My point in bringing up effort is that I was scrolling through my twitter timeline that is filled with social science, and then I saw all the HBDers I followed praising this guy for debunking the notion that IQ is affected by effort. And then I thought, hm, that sounds implausible, I should double-check the statistics, and it turned out the statistics were wrong and actually effort is affected by IQ.
I don't want to replace leftists lying to me about racial difference in g in order to rationalize racial equality with rightists lying to me about effort in IQ tests in order to rationalize racial inequality. I don't think I need special justification for wanting to know the truth about each question in a decoupled way from everything else. But if we absolutely should justify it by practical means, then a straightforward justification would be that this directly contradicts people's experience when filling out tests, and therefore looks delusional to insist on, presumably on the margin reducing the number of people sympathetic to HBD.
Write it here, clearly, and I will. Don't send me to Twitter, or your blog (or do, but realize you've lost much of your audience). Reading this, I think you would be better off if you spent less time on Twitter (well, I think that goes for just about everyone...)
I don't think people would conclude that, and I don't think you proved that in this thread. You remind me of the XKCD about using language in a very non-standard way and then feeling clever that they didn't understand you.
I get the concept of effort, but I think it's difficult to turn into something where you can say you're giving 20%, 50% 80% effort. But it's a minor point.
I feel like you're not listening to me, and I assume you're feeling the same about me. I think we've both reached our limits of what we think we can convey to the other. I wish you luck and success in better understanding g, IQ tests, HBD, and conservatives in general. My final two requests: work on writing more clearly, and listen more with the intent of understanding, rather than proving why you're right. (I will try to do the same!)
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In the left-wing view, resources are by default abundant but production is fixed, so whoever has more than another must be "hoarding" it. It seems pre-agricultural. (Trees still grow fruit even if no one shows up to harvest it.)
In the right-wing view, resources are by default scarce, but production is highly changeable. This view is more industrial or agricultural. (Fields lie empty if no one plants for the next harvest.)
"Right-wingers want to preserve racial inequality of outcomes" presumes that they fundamentally believe in left-wing ideas but are just hoarding out of greed. That's not a symmetric view at all. It's just the left-wing view.
If everyone has the same economic production, but Italians are stealing a share from Frenchmen, then Frenchmen receiving a larger share will just make Italians worse off. If Frenchmen have a lower economic production than Italians, but Frenchman economic production increases, then the total output of the economy rises. Italians bid more for highly inelastic goods like land, but more elastic goods like potato chips or microchips may become cheaper, and depending on their preference the Italians may be better off overall.
It's a bit more complicated than this, but the big question is the same as it was 20 years ago - if you can make a social program to converge racial outcomes in the US by about 50% (putting e.g. black income around where hispanic income is now, which is about where white income is relative to asian income), where is that program?
I second that. I think that compassion to economic-poor and hate towards sexually-poor is because our morality lags economics and we're still think like hunter-gatherers do.
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I think HBD conversations would improve if focus were to shift from cognitive factors to athletic factors. For example, are the extraordinary accomplishments of recent-African-heritage sprinters in international track & field competitions attributable to genetic factors that are relevant at the population level? If we can't make progress on this question, then how can we hope to make progress on (far harder) questions about cognitive factors?
There has been plenty of progress on questions like differences in BMI, running ability and such. Scott even posted a link years ago to a study on genetic causes of BMI differences (which he used to vaguely hint on his beliefs about IQ differences). Genome wide association studies have been done and are being done on all these questions. To quote Joe Rogan, "You haven't been paying attention to the literature."
I think you're suggesting that there's a widespread academic consensus that, e.g., genetic factors significantly explain part of the observed population differences in high-level sports achievements. But I'm skeptical that such a consensus exists. Off my head, I can't think of any mainstream American academic who has endorsed something like this position publicly.
Maybe the consensus exists, but it's considered tasteless to discuss the question in polite company? In any case, are there prominent experts who argue that HBD (largely) explains differences in high-level athletics achievement, but doesn't explain differences in (e.g.) high-level math achievement? I would be interested in seeing how they thread this needle.
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Conversations probably would improve, because doing so would move us out of the territory of policy.
Few people care about sprinters enough to legislate their immigration, or to Just Ask Questions about sprinter culture, or to try and hint that exhorting/suppressing sprinting is a moral imperative. Intelligence, on the other hand, has higher stakes. The fact that it ought to be a much harder question pales in comparison to the increased benefits for "winning" that argument.
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Probably there is less attention about athletic differences because the stakes are lower and it applies to fewer people. Being a top 5% sprinter confers nothing (you need to be among the best in the world to make a living at it), but being in the top 25% of achievement is the difference between middle and lower class.
That is exactly why I think that it could make for more productive conversation.
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Racial differences in sports accomplishment sound likely due to bodily differences in sports abilities. Next question please.
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HBD is a useful scientific frame insofar as it goes against the default blank-statist universalism of academia writ large, but the number of people who truly give a shit about the phenotypic variance populations on psychometrics is a rounding error. The issue is that people like to make interventions which don’t do anything. We can quibble over effect sizes, but right now I could use embryo selection to get a marginally smarter child compared to controls. There isn’t any known environmental intervention that can more the dial on adult g.
I’m actually quite sympathetic to giving more credit to random noise, but nobody has time for the humility that would demand.
Just for context, is there some specific intervention Erik Turkheimer has endorsed that you are objecting to/which you think has been shown to be ineffective?
It’s unfortunately not explicit, but the subtext of of the thesis ‘the environment of poverty causes low IQ’ is that if we fix poverty we fix IQ. If you take Jensen seriously then you can (correctly) predict that anything short of explicit eugenics and/or gene modification is going to fail to move the needle.
On the margins there is plenty of room for serious scientists to argue about possibly meaningful effects here or there: the fact that income and wealth have very different relationships with heritability is definitely interesting. But we try to use truth to win social fights rather than pick our side based on truth unfortunately.
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It's kind of weird to treat an empirical question as a competition and focusing on the sportsmanship and conduct of each side. Ultimately the tactics used in various debates have no effect on the underlying reality. The earth orbits the sun with no regard to the good or bad conduct of people who profess heliocentrism or geocentrism.
I just want to know the truth and for the truth to be known. I want policy arguments built on false factual premises to fail, and I want policies built on true factual premises to succeed. But your characterization affords no place for genuine epistemic rationalists; it assumes that everyone is a contestant in some kind of dumb zero-sum game, engaging in that game only as a means of influencing policy in their favored direction.
🤷 I also want to know the truth; what triggered this discussion was mainly that the other post had been placed in the best-of section of this website. Take it up with the moderators if you think the conduct of each side is irrelevant.
Though I don't think the conduct is irrelevant, because of Aumann's agreement theorem. If there was a side that conducted itself well, you could just copy your opinion from what they say. Because they're not behaving well, you can't do that. That seems like important information to know.
Also I wouldn't say I don't have any space for people who want to know the truth:
Can you give an example of an issue that is the subject of ongoing political controversy in which you believe the assumptions of Aumann's agreement theorem are satisfied?
Disagreements where Aumann's agreement theorem's assumptions are satisfied rapidly disappear, so whenever you talk about persistent controversies, they will not be satisfied. However, it is still relevant for me to know whether they fail to be satisfied because one side if obstinate, or because both sides are bad, as if it's only one side that's bad then I can just copy my views from the other side.
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HBD is very broad or like a spectrum. It can mean definite racial cognitive stratification, or that individual differences are inherently innate, but with race playing a smaller role. Even if some groups score higher on average, there is considerable overlap of the distribution of scores, so we cannot generalize at the individual level as easily, which is what Charles Murray himself said. Even if HBD does have flaws, it still seems to be better than the alternatives at explaining society.
Given how high stakes the LSATs and SATs are, who doesn't put maximal effort? Yet some people get way higher LSAT scores than others even though everyone is trying hard, suggesting innate differences still matter even if incentives also matter. Probably 100k+ people annually apply to top law & med schools, top colleges; I am sure most of them are putting in maximum effort on high-stakes tests such as the LSAT, GRE, ACT, SAT, MCAT, etc.
Part of the problem with a lot of HBD-dunking, such as by Taleb, is they fail to control for individual preferences. So in aggregate, correlations between innate qualities and outcomes are low, but you are not accounting for individual preferences, not that genes do not matter. Most >120 IQ people do not work at a high-paying tech companies, but having a high IQ is highly predictive of who gets those jobs.
Neither I nor the person who did the study were making a claim about the SAT, we were considering a setting where people fill out surveys for pay on the internet.
I didn't say effort was the determining factor, I said that it mattered, with natural variation in effort covering maybe slightly less than 10% of the variance (so if you go from slacking to max effort, maybe that gets you a bit more than a standard deviation of score).
Much of individual preferences are heritable too, but yes I agree that group-level differences are much less "noisy" than individual-level differences.
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And they've had the reins and got to be the null hypothesis for decades. All of their interventions failed. We can play the snipe down studies game all day but in the end one story is backed up by observed reality and the other is backed up by blind dogma.
But I honestly don't even care if this ridiculous debate is settled, all I want is for the blank slatists to actually have to justify their interventions and pay some cost when the inevitably fail. That all the costs of their failures are dumped on their outgroup is unacceptable.
pretty much:
https://i1.wp.com/www.brookings.edu/wp-content/uploads/2017/01/ccf_20170201_reeves_3.png?w=768&crop=0%2C0px%2C100%2C9999px&ssl=1
The black-white achievement gap has proven impervious to all efforts to fix it
same for the gender gap
https://www.aei.org/wp-content/uploads/2016/09/satnew.png
But individual absolute ability may have increased , but group differences persist. It's intellectually dishonest to claim that enough hasn't been tried. Policy makers have invested considerable money and effort at narrowing such gaps, with piss-poor results to show for it.
Regarding the gender gap in math ability, has any country tried to just make girls take twice as many math classes as boys do for a generation to see if that would reverse it?
Don't most girls not participate in such programs? You can only really expect to have an effect on the ones who participate, so if most don't participate, you are closer to not having the program at all than you are to having it for all the girls.
However, it seems difficult to explain lack of girls' participation in an all-girl coding camp by any form of male behavior. In that sense, code camp intervention has not been tested, but has been attempted, which is itself a test. Of course, motte = "patriarchy is fully general and can be hosted on female brains", bailey = "men are sexist and that's why women don't code".
If we take this entirely seriously, dismantling patriarchy here would require forcing girls to go to code camp.
AFAIK the mainstream hypothesis among child developmental psychologists is a self-socialization theory, where children mimic adults in their culture. The whole patriarchy thing is more of a feminist activist thing that doesn't necessarily generalize to the expert's views. Of course the experts might be wrong too, but I'm just saying, as far as I know nobody has tried whether raising children in a culture where math and technical subjects is more of a women's thing works.
Hm, that seems interesting but unfalsifiable. Even if parents try to pretend really hard that everyone is living in such a culture, can't you always say that the children are picking up on their deep-seated true social beliefs?
That said, it would be fascinating to attempt this. (If all kinds of unethical.) Gonzo homeschooling girlcoder conspiracy when?
edit: Of course, another problem: "We formed a community of 500 female programmers." How do you screen off genetic causes? Everyone adopts?
edit: If self-socialization is correct, but so is sexual preference differences, wouldn't this cause significant suffering as boys and girls attempt to fit themselves to a role they're not suited for in an attempt to fit in with their parents? Then again, plausibly "not much more than ordinary growing up."
edit: I wonder to what degree growing up in a progressive family and school environment already approximates this.
edit: ! Can you test to which degree girls who grow up in prog environments go into programming vs trad? If this thesis is true, shouldn't it have some effect?
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AFAIK just about all sex difference correlate with gender equality, including obviously-societal ones such as gender differences in names:
https://twitter.com/DegenRolf/status/1432940616653152259
(And of course it's been shown to apply to e.g. gender stereotypes too, though that could very well be due to stereotype accuracy.)
I don't know why they correlate like this, but I feel like this gives you something equivalent to the phenotypic null hypothesis for the gender equality paradox: if the paradox applies to some variable X, and X is causally upstream of some variable Y, then a priori you'd expect the paradox in X to create a paradox in Y.
The thing is, as kids, boys will look at what men do and mimic that, whereas girls will look at what women do and mimic that. I don't know whether it is the sex difference in programming etc. that is biological, or if it is the sex difference in mimicry that is biological. I wouldn't expect it to be both, because what would that lead to if you took all the world's female programmers and male elementary school teachers and had them create a society where they raised a generation of ordinary children? Would the boys in this society do programming (and thus be mimicking women), or mimic men (and thus do teaching)?
Since I don't know the answer to this question, I can't tell if the sex difference in programming is innate or not.
"Just about all sex difference correlate with gender equality"
I don't think that's close to right -- it's much too strong, but I admit I haven't seen a lot of data. What I have seen is consistent differences across multiple cultures:
Men and things, women and people: a meta-analysis of sex differences in interests
Why can't a man be more like a woman? Sex differences in Big Five personality traits across 55 cultures.
The Distance Between Mars and Venus: Measuring Global Sex Differences in Personality
Note that the differences tend to be actually larger than many of these suggest at first glance, as there tend to multiple, at-least-partially-independent, so if you take multiple traits at once, the means move further apart.
Scott also has a great discussion on it in Contra Grant on Exaggerated Differences
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Maybe the cause of the differences is on an environmental factor that is hard to intervene on.
Can you propose an environmental factor that is both difficult to intervene on and fits the decades of attempts to intervene with no real success? Because I have a pretty good theory that explains the facts and I'm not aware of any environmental theory that hasn't failed horribly wherever tested. I think this is fundamentally a question about what the null hypothesis should be given that outcomes are far too complex of an issue to conclusively prove any particular theory.
This all seems like a motte and bailey,
Motte: It's very difficult to actually prove causation on outcomes because what could seem like direct genetics could just be a correlation with environment
Bailey: There is an outcome gap therefore there must be an environmental factor so we should tear apart gradually increasing amounts of the social fabric hunting for it.
If you just have a bone to pick with HBD people being slightly too confident in their theory then fine, I can agree with that. But if you're just trying to discredit it to carry water for another theory with an abysmal track record and a far more obvious problem of confusing correlation for causation then please actually defend why you think environmentalism makes a better null hypothesis.
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This is mostly it, with one major point:
If the basketball skill is an effect of height, then height and basketball skill will be genetically correlated. (For basically the same reason that if basketball skill is an effect of height, then basketball skill and height will be ordinarily correlated.) Not "will be misestimated to be genetically correlated when they are actually environmentally correlated" - but instead "will genuinely be genetically correlated". This is because genetic correlation is not a measure of whether height is horizontally pleiotropic with good slam-dunk technique, but instead just a measure of whether height genes and basketball genes are overlapping, for whatever reason it might be.
If the basketball example doesn't fit, can you give a better example?
It totally does fit as an example, one just has to be careful what it is an example of.
Let me rephrase: Can you give an example of a trait correlated with basketball skill, which would be erronously found by genetic testing?
What do you mean by "erronously"?
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I'm basing my experience more on the Twitter debates that hover around Erik Turkheimer than I am on the discussions that happen on The Motte, as I don't have much experience with The Motte. It's quite possible that The Motte is different.
I think if you're innumerate you should just not rely on quantitative studies such as twin studies because they require numeracy to interpret.
I mean I can try, but I already wrote an explanation in my blog post, so I'm not sure how much more I can say about it. Is there some specific part of my linked post that you find confusing?
I've seen HBDers point out that there is a genetic correlation between homosexuality and mental illness, and use this as an argument that homosexuality and mental illness are innately related, as a counterargument against e.g. homosexuals being bullied and becoming mentally ill as a result of that. (I've also seen lots of other examples, but this was one of the key examples that made me decide to write the post.)
If a genetic correlation referred to a genetic confounding aka horizontal pleiotropy aka "one gene has two unrelated effects", then that counterargument would make sense. The bullying theory of gay mental illness doesn't predict that there is a biological connection between homosexuality and mental illness.
However, genetic correlation actually refers to something more subtle. Two variables are genetically correlated if genetic factors that contribute to one variable also contribute to the other variable. So for instance, intelligence and education are genetically correlated, because genes that contribute intelligence makes people better able to pass exams etc., which unlocks better educational opportunities. In this case, intelligence and education are not genetically confounded; rather they are just ordinarily causally related, and this makes them genetically correlated, just as it makes them ordinarily correlated.
Your example seems pretty easy to test. There are lots of twin pairs where one is homosexual and one isn't the heritability is only 30%. You could just see if the non-homosexual identical twins have the same rates of mental illness as the homosexual ones.
Yes, this is called environmental correlations, it is correct that the phenotypic null hypothesis also predicts the environmental correlation to be high whereas the genetic confounding hypothesis doesn't predict that. (Specifically, the phenotypic null hypothesis predicts every variance component to be correlated, whereas confounding hypotheses only predicts confounded variance components to be correlated.)
Some of the studies on homosexuality and mental illness finds the environmental correlation to be zero, which supports the genetic confounding view. I have at times acknowledged that/pointed that out. I also address the concept in my linked post.
The thing that bothers me is not the conclusion but instead the argument: WHY would HBDers make the argument with genetic correlations in the first place, when clearly it is the environmental correlations that are the key question? Because they don't know the phenotypic null hypothesis. But WHY would HBDers not know the phenotypic null hypothesis when it is such a basic concept for heritability? Because the phenotypic null hypothesis is anmoying and sounds like an outgroup thing, is my hypothesis.
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As a leftist who believes in IQ heritability; ya'll need to clean up your argumentation so I can come at it from the other side.
The leftist debate bro rat types who actually engage with HBD topics have all debated HBD types, and complete, utterly smashed them on the rhetoric and the facts when it comes to racial IQ gaps, but have all retreated on the heritability of IQ.
The thing is, the (! MAJORITY OF !)argumentation by the right HBD crowed is so rickety and echo-chamber adapted that it instantly falls apart under any amount of hostile attention and also looks really bad, so it drags down my beloved IQ heritability by making dumb unsupportable racialized arguments instead of sticking to easy population arguments.
Uh, what ? Extraordinary claims demand extraordinary evidence, please link at least one such 'smashing' that isn't the blank-slater just declaring IQ is fake and refusing to address the gap merely waving around vaguely.
Yeah, Ezra Klein embarrassed himself in his discussion with Sam Harris who isn't even that well versed or even slightly ideologically committed. Same with Raj Chetty last time I saw him in the wild.
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I've yet to see this happen even once.
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As someone who believes that the racial IQ gaps are innate but who is wondering just how deep the rabbit hole of HBD incompetence goes, I would be interested in hearing more. What's the best case that it is due to environmental factors?
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Are you suggesting that people are prone to bias in favor of their pre-existing beliefs? ;)
Not understanding the phenotypic null hypothesis is not a mere "bias in favor of their pre-existing beliefs". It's a fundamental failure to comprehend what is even being talked about. A failure to understand/accept it is just as bad as if a leftist considers inequality of outcome to be a proof of racism, and claims that inequality of outcome disproves genetic explanations.
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