It works in practice, but does it work in (my) theory?

There's a certain type of person that doesn't produce any empirical contribution to "Reducing the heredity-environment uncertainty". Instead, they contribute various theoretical arguments which they take to undermine the empirical…

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You can’t ignore gene-environment correlations when looking for gene-environment interactions

Humans love interactions, they tell interesting stories (however, no study has investigated this bias, AFAIK). However, statistics and nature hate interactions. Interactions in general have low prior, and because people…

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Terman’s belief in high heritability of intelligence: unwarranted confidence?

Warne, R. T. (2018). An Evaluation (and Vindication?) of Lewis Terman: What the Father of Gifted Education Can Teach the 21st Century. Gifted Child Quarterly, 0016986218799433. Russell Warne has a…

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Animal cross-fostering, race and IQ, and the deductivist’s fallacy

I wish to coin a fallacy I've seen a number of times, exemplified in this paper: Kempthorne, O. (1978). A BIOMETRICS INVITED PAPER: Logical, epistemological and statistical aspects of nature-nurture…

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Tests of colorism in Pelotas (Brazil) sample for income, wealth and education outcomes

In 2016, a Brazilian PHD student with access to the Brazilian Pelotas dataset was kind enough to run a few regressions for us. We apparently forgot to make the results…

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