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…
Substack 1st anniversary, statistics, reader survey, and a new video
My Substack is growing a lot faster than I anticipated, and we've hit 2000 2100. It took about one year, as my first post was 11th October 2021: Paid subscribers…
Variance explained is mostly bad
Reporting the proportion of variance explained by some statistical model is ubiquitous. However, just like p-values, it is a misleading metric. I'll try explain why it is used, and why…
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…
What has feminism done for women? Review of Louise Perry’s The Case Against the Sexual Revolution
Self-proclaimed feminists like to describe their movement as being very diverse. This is not generally true, most of them hold more or less the same views. There are a few…
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…
Does honey actually work against coughing?
I've been battling my way through round three of my COVID adventures this week, and it's not been fun. 3 days of lying in bed with full body fever, cold…
Who supports biotech eugenics?
Naturally, you've heard that eugenics is something that evil people, in fact, Nazis support. So, which country has more Nazis? PEW research was kind enough to ask a bunch of…
Andrew Sullivan not allowed to tweet the wrong science
The main function of angry activist people on Twitter is to limit the discourse to within the limits they find acceptable. Since Twitter and other social media have mostly left-wing…