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Shakespeare ain’t got nothing on Michael Brecker.https://youtu.be/tbYl_B3YINQ
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See the crude, unfinished structural causal model below. The green represents everything you eliminate when conditioning on parental EA (which includes some c^2 not captured by SES measures). Unidirectional arrows represent causal effects; dotted double-arrows correlations (3/n)pic.twitter.com/edshLVvnnz
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You observe SES-group differences in PGS that go away after conditioning on SES and parental education. This conditioning eliminates some shared environmental effects not captured by SES, which is why you do it. But it also eliminates unmeasured (non-PGS) genetic effects (2/n)pic.twitter.com/RrcA34uDSD
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You suggest some of the EA ~ PGS x SES effect might operate through # of books in the home, preschool, and other early investment. If true, wouldn’t we expect to see these sorts of interventions produce consistent, long-term, large effects in RCTs (which we mostly don’t)?pic.twitter.com/Q90MRtUakD
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Glad to see this paper finally out! - You say EA score distribution is largely similar across SES groups. What about in the far right tail? Graphs below suggest potentially big differences in odds ratio. Not sure how to answer this question in a non-parametric (KDE) context (1/2)pic.twitter.com/Rj9W1lllQO
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This is how the RDD treatment procedure worked. The paper seems pretty convincing, I must say, especially given all the existing literature on the causal lead-crime connection.pic.twitter.com/7vDUAUapnI
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Interesting. 2 concerns: - Does RDD treatment "randomization" process + controlling for covariates eliminate all selection bias? (treatment: receive 2 blood tests with BLL > 10 µg; control: only 1 test > 10µg) - Treatment effect heterogeneity: effect only present in >20µg group?pic.twitter.com/HFk7enekYF
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Unless I midunderstood, it seems the out-of-sample R^2 for height was 0.7 (which is absolutely bonkers; there goes nearly all the missing heritability). Am I missing something? It's also fascinating from a pop gen / ev bio standpoint that LASSO works so well. Why sparsity?pic.twitter.com/kNeZ3aII5s
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“our included intelligence tests are somewhat limited as measures of general cognitive ability as the tests only include a few subtests.” The authors point out some residual confounding may be due to selection effects—death, lack of participation, etc. The attrition rate is highpic.twitter.com/fSwy4Hn6Ml
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The midlife IQ ~ age 12 IQ x years of EDU interaction is curious. Yes, perhaps because “the Danish school system has a strong focus on improving the abilities of the least able”, the interaction is causal: the <90 IQ group experienced greater IQ returns of schooling. However...pic.twitter.com/iKCr8nXfgt
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I wouldn't hang my hat on p = 0.031 for math and statistical insignificance for English.pic.twitter.com/bboPmSmveg
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In Fig 2, it's plausible that the air filters had no effect at all on school improvement. Just eliminate the RD line and draw a horizontal line, r = 0. The air filter x distance effect is clearly driven by one outlier.pic.twitter.com/jxZeU0zX1J
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Dubious. P(replication of interaction) < 20% - The financial incentives were small, on the order of 10 cents per question? - The interaction is significant when controlling for education but only marginally significant when not. - It's more parsimonious: RWA --> worse CRT scorepic.twitter.com/HMHFdo2l8n
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I was curious about the 2/sqrt(π) constant and found the original (?), short proof of it: https://www.tandfonline.com/doi/abs/10.1080/08856559.1933.10532469 …pic.twitter.com/5UGuSwmpAY
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The largest dataset I've seen on this subject: https://www.fertstert.org/article/S0015-0282(13)03257-3/pdf … It's scary how fast the increase in aneuploidy rate is from early 30's onward. This is a good book on the development of IVF and other assisted reproductive technologies: https://www.amazon.com/gp/product/1421429845/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1 …pic.twitter.com/CA2lK1CCJy
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Rawls' second principle of justice is implicitly anti-utilitarian, valuing equality of outcome above total utility. In education, high heritability (https://en.wikipedia.org/wiki/Heritability …) of educational attainment _may_ be a good proxy for a level playing field. See: https://adamlgreen.com/education-policy/ …pic.twitter.com/yqR3gAwFM6
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The view I'm referring to is the "Normal Function" account of disease treatment/enhancement distinction https://plato.stanford.edu/entries/enhancement/#NorFunAcc …pic.twitter.com/BbEaNFYqeM
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From Cavaliere (2018), "Looking into the shadow: the eugenics argument in debates on reproductive technologies and practices": https://www.ncbi.nlm.nih.gov/pubmed/30535862 pic.twitter.com/T7nYTZS1ui
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Soon we will face incredibly difficult choices about genetics, privacy, and assisted reproductive technologies. To make these choices wisely, we mustn't paper over our sordid history & settle for simplified narratives. (See cliched quote of questionable provenance below.) (13/n)pic.twitter.com/C4TkruyK46
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