Cold winters theory: a summary of the evidence and replies to objections
Cold winters theory gets at bad name, even from fellow hereditarians. In fact, the article about it was deleted from Wikipedia too. In my opinion that's because they are not…
Italian economic inequality explained by cognitive inequality
Italy is well known for being sort of two countries in one. These differences are large and longstanding and cover pretty much every aspect of society in typical S factor…
Drug users vs. drug abusers
Drugs are bad mmk? Well, are they? The go-to argument involves looking at drug abusers. It's hard to say something positive about drug abuse in general. Everybody has a story…
A theory of Ashkenazi genius: intelligence and mental illness
I want to put together a theory to explain a putative phenomenon: Ashkenazi Jews have more geniuses relative to non-Jewish Europeans (gentiles) than one would expect based on their average…
Racial diversity: does it matter? How do we know?
A lot of people on the right are concerned about the negative effects of ethnic and religious diversity. Sometimes, they produce plots like this one: The plot shows racial homogeneity…
Reader survey 2022 results
So let's see those survey results from the 2022 reader survey. Some of them are funny. There were a total of 318 takers, of which 125 were complete (answered every…
African IQs and mental retardation
This one comes up a lot when we discuss the dire realities of the average intelligence levels seen in Sub-Saharan African countries: If the mean IQs are 70, wouldn't that…
Secular changes in race differences in height: a mystery
Be sure to participate in the 2022 reader survey if you didn't already! Some days ago I came across this study: Rashad, I. (2008). Height, health, and income in the…
National intelli… basic skills!
Ludger Woessmann tells us about some dire facts: https://twitter.com/Woessmann/status/1581884461007785986 It's about their new 75 page working paper which they summarize thus: How far is the world away from ensuring that…
Research credibility and group differences
Suppose you did some research that you want to publish. Say you investigated the difference between men on women on some number of traits that are relevant to your current…
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