Burt, Tizards and hereditarianism
Most readers are probably aware of the fraud accusations against Cyril Burt on account of various claims, but in particular the repeated digits across populations and other numerical irregularities. There's…
Finnish survey of journalists’ voting preferences (2012)
We were finally able to obtain a complete copy of a survey of Finnish journalists. This is the final sample for our large cross-national journalist project. Finnish journalist survey Unfortunately,…
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…
On the East Asian > White advantage on scholastic tests
It's well known that East Asians (Chinese, Japanese, Korean; CJKs) tend to outperform Europeans ('Whites') on cognitive tests. If we look at the standard IQ tests, the advantage is about…
The g factor and principal components regression
Jensen spent decades trying to convince people that the g factor (general intelligence) is the primary reason why IQ tests predict stuff, not whatever mental abilities the tests appear to…
XYY supermales and violence
Nature has a review of Robert Plomin's new book by some random lefty historian data-free reasoning type called Nathaniel Comfort (he follows the usual pattern of having a background in…
Do Republic professors hide their voting intentions?
There's a lot of evidence for left-wing dominance of academia. One study (Langbert 2018) looked at registered voters and finds quite unbelievable differences: In this article I offer new evidence…
School factors are not important: evidence from classroom separation studies
People commonly ascribe large effects to having this or that teacher, or this or that classmate. They usually cite some anecdotes from their personal lives for this, but large sample…
The intelligence of stereotypes
The theory seems obvious: since stereotypes are just beliefs about groups, having more accurate stereotypes would be expected to be related to intelligence, just as having more accurate beliefs on…
A note on sex difference in variation in attractiveness
Given the recent discussion of sex differences in variation in traits, The Audacious Epigone has a quick post based on the GSS (you guessed it). He finds: The weight finding…
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