Massive Danish sibling study confirms Charles Murray’s findings

Massive sibling study just dropped, and was also presented at ISIR 2019. Hegelund, E. R., Flensborg-Madsen, T., Dammeyer, J., Mortensen, L. H., & Mortensen, E. L. (2019). The influence of familial factors on the association between IQ and educational and occupational achievement: A sibling approach. Personality and Individual Differences, 149, 100-107. The present register-based study…

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The sibling control design

A friend of mine and his brother just received their 23andme results. In a table they look like this (I have added myself for comparison): Macrorace Bro1 Bro2 Emil European 52.6 53 99.8 MENA 42.5 41.3 0.2 South Asian 2.8 3.4 0 East Asian & Amerindian 1.1 0.7 0 Sub-Saharan African 0.5 0.5 0 Oceanian…

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