Danish national IQ

Best estimate of Danish-Scandinavian IQ based on recent, large samples is ~103 relative to UK norms. What is the Danish national IQ? If we look at Lynn and Vanhanen 2012, it is estimated at 97.2. If we look at Becker’s re-analysis, it’s given at 98.45 (version 1.2). However, this is based on only two studies,…

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The original texts of the Eyferth study

Often discussed, occasionally cited, but rarely read — certainly a highly suspicious combo — I post here the original German language final version (we think): Eyferth, K. (1961). Leistungen verschiedener Gruppen von Besatzungskindern in Hamburg-Wechsler Intelligenztest für Kinder (HAWIK). Archiv für die gesamte Psychologie, 113, 224-241. Eyferth, K. (1959). Eine Untersuchung der Neger-Mischlingskinder in Westdeutschland….

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Turkheimer strikes back! (but misses)

Recently, I took a poke at Eric Turkheimer. And now he’s ready with a retaliation: Only @KirkegaardEmil would proudly advertise support for the author of "Early Jews and the Rise of Jewish Money Power" and "Swindlers of the Crematoria" as a list of "who's cool in behavioral genetics and IQ." He that lieth down with…

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Ancestry effects in Brazil: economist approach with person names

I have written a lot about ancestry approaches, generally from a psychometric and genomic angle. However, economists can also play this game. Daniel A. F. Lopes, Geraldo A. Silva Filho, and Leonardo Monasterio. Culture, Institutions and School Achievement in Brazil This paper estimates the impact of culture on the academic performance of Brazilian students in…

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Lewontin’s famous 1972 book chapter

Few people actually read this, which is a shame because the science is interesting for historical purposes, and the fulltext of his famous fallacy is rarely read. I believe this is a pity because it is really obvious when you actually read it. Lewontin, R. C. (1972). “The Apportionment of Human Diversity”. Evolutionary Biology. pp….

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Nobel prize winners are very unlikely to be religious

This page on Wikipedia claims rather surprisingly that: This list comprises laureates of the Nobel Prize who self-identified as atheist, agnostic, freethinker or otherwise nonreligious at some point in their lives.[2] Many of these laureates were identified with a religion earlier in life. By one estimate, between 1901-2000 about 10.5% of all laureates, and 35%…

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