Updated 23andme results (2019-01-22)

Previous results. 23andme has updated their ancestry estimates, so I’m reposting mine for people who are wondering. The change to previously is that now I’m slightly more European: 99.8% vs. 99.7%. I’m no longer North African, but now I’m 0.1% Amerindian (false positive probably), and less Ashkenazi 2.8% (from 2.9%). They also report regional results…

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What you can’t say: genetic group difference edition

Paul Graham‘s 2004 essay What you can’t say had a big influence on me and remains my favorite essay. In he argued essentially that popular morality shows fashion tendencies i.e. that it varies over time but for no evidence-linked reason. What is at one time considered a grievous moral evil is later considered not a…

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The WORDSUM question

I tweeted about this already, but I’m dumping some notes here for future reference. The Wordsum is a 10 word vocabulary test that’s been used for decades as a brief measure of intelligence. It’s most prominently used in the General Social Survey (GSS), a recurrent US survey of various social matters that’s been going on…

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Environmentalists like admixture analysis too (until they don’t)

See previous post about quotes from the medical genetics and physical anthropology literature on admixture analysis and the causal interpretation. There’s quite a few older admixture studies that examined relationships between racial ancestry and intelligence. Most of these used quite crude methods such as interviewer judgement. Some used a better method, namely objectively measured skin…

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