Some guy on SSC: I remember hearing somewhere that the IQ of the mother is what determines the IQ of the children. Is this accurate? To what extent does the…
Dahlke, J. A., & Sackett, P. R. (2017). The Relationship Between Cognitive-ability Saturation and Subgroup Mean Differences Across Predictors of Job Performance. Journal of Applied Psychology. Abstract The authors quantify…
Skoyles, J. R. (1999). Human evolution expanded brains to increase expertise capacity, not IQ. Psycoloquy, 10(002). Chicago Skoyles is arguing a rather implausible claim: Why do modern humans have larger…
In reply to: http://nautil.us/issue/48/chaos/what-both-the-left-and-right-get-wrong-about-race http://www.geneticshumanagency.org/gha/origin-of-race-differences-in-intelligence-is-not-a-scientific-question/ There's a new kind of 'environmentalist' (rather, anti-hereditarian) defense in town, or at least, one that's not commonly seen. It goes like this: This is…
I don't have time to provide extensive citations for this post, so some things are cited from memory. You should be able to locate the relevant literature, but otherwise just…
Nisbett's 2009 book on intelligence, Intelligence and how to get it, is a goldmine of stupid claims that one can quote-mine for introduction and discussion sections of papers. For instance,…
https://twitter.com/HoustonEuler/status/837894199814955008 There's been some talk about whether the SIRE (self-identified race/ethnicity) gaps are closing and if so how much and when they did that. The matter is complicated for many…
In many ways, my science -- and my colleagues' science -- generally involves collecting evidence for obvious hypotheses that are mainly denied by leftist-leaning people (more precisely, egalitarian). Here's a…
Whitley, E., Deary, I. J., Ritchie, S. J., Batty, G. D., Kumari, M., & Benzeval, M. (2016). Variations in cognitive abilities across the life course: Cross-sectional evidence from Understanding Society:…
I was reviewing a paper on social inequality in Brazil at the state level (I published one myself in 2015), and it struck me that one should be able to…