New paper out: Global Ancestry and Cognitive Ability (PNC study)

Lasker, J., Pesta, B. J., Fuerst, J. G., & Kirkegaard, E. O. W. (2019). Global Ancestry and Cognitive Ability. Psych, 1(1), 431-459. Using data from the Philadelphia Neurodevelopmental Cohort, we examined whether European ancestry predicted cognitive ability over and above both parental socioeconomic status (SES) and measures of eye, hair, and skin color. First, using…

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Politics from text — not so easy?

I came across this obscure study while doing some research on other matters. Yan, H., Lavoie, A., & Das, S. (2017). The Perils of Classifying Political Orientation From Text. Linked Democracy: Artificial Intelligence for Democratic Innovation, 858, 8. Political communication often takes complex linguistic forms. Understanding political ideology from text is an important methodological task…

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New paper out: book review of Lynn and Becker’s The Intelligence of Nations (2019)

Kirkegaard, E. O. W. (2019). Solid numbers, missed opportunities: Review of The intelligence of nations. Evolutionary Behavioral Sciences. doi.org/10.1037/ebs0000181 ResearchGate I was asked to review this new book written by David Becker and Richard Lynn. It’s the long work in progress that James Thompson has blogged about on numerous occasions. This book presents the latest…

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Arab engineer IQ?

As others have pointed out many times (recently Richwine 2019), one cannot just use identical thresholds of educational attainment to select for identical levels of human capital (broadly conceptualized) among sending immigrant countries. Example of this was that Heiner Rindermann mentioned in an interview (in German) that: Selbst in einer Elitegruppe, Ingenieurstudenten aus den Golfstaaten,…

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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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ISIR 2019 talk: Machine learning psychometrics

Machine learning psychometrics: Improved cognitive ability validity from supervised training on item level data Andrew Cutler gave the talk since I was unable to attend. Slides are here: docs.google.com/presentation/d/1xxfYTWP2R0ZFvbI24sR1jVyFC_qN_Lw85782zE5Q2Jo/edit#slide=id.p Live tweeted by Russell Warne: Last speaker of the day is Andrew Cutler (Boston U.). He's talking about "Machine Learning Psychometrics."#ISIR2019 #psychometrics #psychology — Russell T….

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