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 Both Color and Parent-Reported Ancestry in the National Longitudinal Survey of Youth 1997, Psych Little research has dealt with intragroup ancestry-related differences in intelligence in…

Continue Reading

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 public, but do so now so others can see. I have also previously analyzed some of this data which was later published in an obscure…

Continue Reading

Nisbett’s 2009 book on Intelligence: reviews

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, Nisbett tries to argue that brain size is not causal for intelligence! He writes: The correlation between cranial capacity and IQ is probably about .30-.40…

Continue Reading

Testing colorism using genomic data without phenotypic data

Normally, testing colorism or other causal models of why human racial traits have nonzero relationships to socioeconomic outcomes requires that one has the following data: Measure of racial ancestry Measures of racial appearance Measures of socioeconomic outcomes such as income or educational attainment Path model wise, one can think of it this way: Discrimination models…

Continue Reading