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…
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…
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: https://docs.google.com/presentation/d/1xxfYTWP2R0ZFvbI24sR1jVyFC_qN_Lw85782zE5Q2Jo/edit#slide=id.p Live…
Noah Carl crowdfunding online
As you probably know, Noah Carl was attacked by the Red Guards at his Cambridge job. Eventually, the college ended up firing him after months of harassment. This firing is…
Article out: First Names, Cognitive Ability and Social Status in Denmark
Kirkegaard, E. O. W. (2019). First Names, Cognitive Ability and Social Status in Denmark. Mankind Quarterly, 59(4). Retrieved from http://mankindquarterly.org/archive/issue/59-4/5 It is well established that general intelligence varies in the…
Persians and Parsis
One can find various quotes like this by Muslim philosopher Ibn Khaldun: Thus the founders of grammar were Sibawaih and after him, al-Farisi and Az-Zajjaj. All of them were of…
New paper out: Filling in the Gaps: The Association between Intelligence and Both Color and Parent-Reported Ancestry in the National Longitudinal Survey of Youth 1997
We've got a new important paper out in the special issue on race and intelligence in Psych: Hu et al, 2019, Filling in the Gaps: The Association between Intelligence and…
Recent reviews in animal breeding (2019)
Since I was asked for recent reviews on the topic, I figure I might as well post them here too. Here's a few published since 2016. I regularly read these…
Immigrant IQ gains by generation: evidence from PIAAC
Thanks to Chet Robie for sending me his study. There's been quite a bit of research on immigrant IQs. From within our network, Heiner Rindermann and James Thompson published a…
FAQ for “Cognitive ability and political preferences in Denmark” Kirkegaard, Bjerrekær, Carl (2017)
Kirkegaard, E. O. W., Bjerrekær, J. D., & Carl, N. (2017). Cognitive ability and political preferences in Denmark. Open Quantitative Sociology & Political Science, 1(1). Various critics of Noah Carl…
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