Quoting from Arthur Jensen’s book Educability and group differences (1973). He was being criticized for postulating genetic causes, which some critics think would cause great social harm if they were to be believed. That is, Jensen was replying to the Turkheimers of yesteryear. The scientific task is to get at the facts and properly verifiable […]

Speaking of philosophy of science, one of the things about new paradigms is that they are supposed to solve anomalies of older paradigms. A while ago, Dalliard (2014) mentioned (in a footnote!) one of these, namely the attitude-achievement paradox. There’s quite a number of studies on it: The brief version is that black, Hispanic etc. […]

Some years ago, I discovered the Swiss dataset used in R. It has data from the late 1800s of Swiss subnational units, 47 French speaking ‘provinces’ i.e. sub-canton level (probably districts). One can the documentation here. What caught my eye was that they had test data from the army examinations going back to 1870s, i.e. […]

One prominent model for why (some) nonwhite race groups do worse is that they experience hostile experience based on skin color. For instance, Hunter (2007) writes: How does colorism operate? Systems of racial discrimination operate on at least two levels: race and color. The first system of discrimination is the level of racial category, (i.e. […]

Genetic variation between populations/races of a species is a nice single summary statistic about how large between population phenotypic differences to expect. In case of humans, this value (Fst, the fixation index) is about 15%. This finding is due to Lewontin (1972) and is now mindlessly repeated (Lewontin’s fallacy) as some kind of slam dunk […]

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 — in fact, best not to cite any wrong-thinker at all. This seems to be what happened actually (initial tweet). Lim, S. S., Updike, R. L., […]