This study, by @mendel_random @timfrayling and others, shows that participation in various parts of the UK biobank depends in complex ways on genotype. You can imagine what I think-- the authors take a steadfastly optimistic tone- we can use this to control for bias! /1
Whereas I see it as the bubbles slowly rising to the surface as the GWAS-of-behavior project disappears under the surface of the gloomy prospect. But that isn't what I want to say here-- instead I want to be very old-fashioned. /2
One thing that GWAS has done has shown the limitations of automated, hypothesis-free research. I was trained in the "you need to have a theory" model, and I am very aware of all the trouble that caused. GWAS is the purest form of reaction against that tradition. /3
The authors report, without a hint of irony or Bayesian skepticism, that "For example, older age of losing virginity caused participants to complete more FFQ and have higher odds of participation in the MHQ" Wut? /4
I don't have the right answer here, but I do think GWAS-world needs to be careful. Cranking through method-driven studies with complete disregard for what the results actually mean isn't science, it's stamp collecting. That didn't work for twin studies and it won't work now. /end
Someone should have told me that I forgot to include a link to the study! Urgh.... nature.com/articles/s4146…
Someone should have told me that I forgot to include a link to the study! Urgh.... nature.com/articles/s4146…
Per a discussion about tagging as many authors as possible... apologies for not including the first time. And by the way... I would value pushback on my opinions! Study was led by @JSTyrrell and Kate Tilling.

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More from @ent3c

11 Jul 20
1. I am grateful for this reply because it makes clear what is at stake. The hereditarian hypothesis is that a portion of the disadvantage faced by Black people is not the result of discrimination, but instead of their own innate characteristics.
2. Apparently the upside of this hypothesis is that it allows White people to feel better about the current “destructive and divisive culture war.”
3. tbc, I am *not* saying that it can’t be true because I don’t like the consequences. I am saying that it is an ugly thing to speculate about in the absence of meaningful evidence, and there isn’t any.
Read 9 tweets
8 Jul 20
Some thoughts on the Harpers letter. I support it in spirit: the world would be a better place if people could be more tolerant and open minded. But I think their argument is oversimplified to make the problem seem easier than it really is. /1
Cancellation is not new. Consider holocaust deniers. If the chairman of your history department announces that the Holocaust never happened, she is going to be canceled, and this was true long before Twitter. Why, exactly? /2
There are two reasons: 1) The Holocaust has already been sufficiently litigated and there is nothing useful to add, and 2) Insisting on re-litigating it is disrespectful and potentially harmful to people who died and people who survived. /3
Read 9 tweets
5 Feb 20
In the course of my usual complaining about a GWAS-- never mind-- it occurred to me that the core of my problem is the lack of an appropriate null model. /1
Usually when one conducts a study, there is a possible null result that will lead you to say, "Oh well, it didn't work." In a well-functioning scientific world that result is still publishable. What would such a result look like for GWAS? /2
It seems for most investigators, that would be h2=0, no significant SNPs, no genetic correlations with anything. The problem is, THAT RESULT WILL NEVER HAPPEN /3
Read 6 tweets
31 Mar 18
I can only say this so many times: *of course* IQ is heritable in the statistical sense. No one who knows me or my work could possibly think I need this explained to me. We said so in the first paragraph of our original piece. /1 goo.gl/SZpKhx @kph3f @ezraklein
But the general heritability of IQ has 0 implications for the causes of a particular group difference. I get it that saying, maybe the group difference is *partly* genetic seems like a moderate stance on a polarized topic, but that is an illusion. /2
Speculating in the absence of convincing theory or empirical evidence that a race is genetically inferior on a trait as important as IQ-- the partly is no help-- *is* the polarized view, the other pole being the belief that genetics has nothing whatever to do with behavior. /3
Read 5 tweets

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