National IQs: measurement invariance studies
A lot of national intelligence criticism focuses on the measurement validity. Are the scores really comparable across countries? Most of the criticism is armchair stuff, or vaguer claims based on…
Politically motivated retraction of benign national intelligence study by Clark et al (2020)
Original version: Clark, C. J., Winegard, B. M., Beardslee, J., Baumeister, R. F., & Shariff, A. F. (2020). Declines in Religiosity Predict Increases in Violent Crime—but Not Among Countries With…
Nice 1100 IQ
Predicting aggregate intelligence level from non-cognitive data
Follow-up to my recent post on machine learning psychometrics. Some years ago, I read this paper by Gerhard Meisenberg: Meisenberg, G., & Williams, A. (2008). Are acquiescent and extreme response…
Time preferences and national IQ
Wang, M., Rieger, M. O., & Hens, T. (2016). How time preferences differ: Evidence from 53 countries. Journal of Economic Psychology, 52, 115-135. We present results from the first large-scale…
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. https://doi.org/10.1037/ebs0000181 ResearchGate I was asked to review this new book written by…
National IQs from GRE, GMAT, TOEFL et al
Back in January, we published a paper showing that the obvious explanation of variation is in GRE scores by nationality/origin fits the data well. Pesta, B. J., Fuerst, J., Kirkegaard,…
Thou shall not cite Richard Lynn
Thou should in fact basically copy his work, and then publish it in The Lancet, and then not cite him, or Heiner Rindermann, or David Becker, or Gerhard Meisenberg --…
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,…
The national IQ of Nepal
There's an interesting study making the rounds on Twitter: https://twitter.com/JProtzko/status/971763351805075457 Dulal, S., Liégeois, F., Osrin, D., Kuczynski, A., Manandhar, D. S., Shrestha, B. P., ... & Prost, A. (2018). Does…
National chess skill: European culture, intelligence
http://www.unz.com/jthompson/chisalas-last-word/ How far should the net be cast as regards intellectual achievements? I suggest as far and wide as possible, or it will be assumed that some results are being…