Emil O. W. Kirkegaard blog
This was presented at London Conference in 2015. Not published so far because the authors “were busy”. In that spirit, I shall leave out their names and post the results. A Meta-analysis of Roma Intelligence: an update The Roma are the only major European ethnic group the average IQ of which is unknown. Although there…
Continue ReadingI cover these here mainly because they are not widely known, and relate to ongoing discussions about the generalizability of twin estimates across time and space. To put things into perspective, current debate has papers like this: Rimfeld, K., Krapohl, E., Trzaskowski, M., Coleman, J. R., Selzam, S., Dale, P. S., … & Plomin, R….
Continue ReadingMany people don’t know this, so I am posting here to increase awareness. Ron Unz (of unz.com fame) has a hobby of collecting scanned versions of older periodicals, anything goes basically, especially fringe stuff, or stuff considered bad by modern standards (woke standards). The result is a massive, public, searchable archive. Unfortunately, it is not…
Continue ReadingOriginal version: Clark, C. J., Winegard, B. M., Beardslee, J., Baumeister, R. F., & Shariff, A. F. (2020). Declines in Religiosity Predict Increases in Violent Crime—but Not Among Countries With Relatively High Average IQ. Psychological science, 31(2), 170-183. Retraction notice on journal website Andrew Gelman has a write-up from his perspective with woke title: Retraction…
Continue ReadingAnon writes me: Hi, Sorry for not tweeting this at you, I don’t have a twitter. I saw this post: https://emilkirkegaard.dk/en/?p=8629 and this is more conjecture than anything, but perhaps when people fill out personality surveys and they say that they have a lot of some kind of trait, what that really means is that they…
Continue ReadingSee 2019 post on introductions to psychology etc. for broader coverage Anon asks me today: What would be the best way to quickly self-teach enough statistics to be able to evaluate academic papers? I have the basic concepts down but I’ve never taken an actual stats class. The glib reply is: l2code. For reals though. But…
Continue ReadingThere’s a new interview/podcast-video out, with Richard Haier, the editor in chief of Intelligence journal. Here’s the contents/times. I have bolded the topics probably of most interest to readers of this blog. [00:35] Introduction of Richard Haier [01:47] Richard shares his initial study on brain efficiency’s link to intelligence [04:50] Sex differences in intelligence [09:37]…
Continue ReadingTL;DR tweet version of this post. The cultural revolution has come to SlateStarCodex (which now also has a Wikipedia page). Journalist is threatening to reveal his real name and endanger his work as a shrink. There are multiple good write-ups: Anatoly Karlin – No Country for Gray Tribesmen Tom Chivers – Slate Star Codex must remain…
Continue ReadingI hate censorship, so I repost the content they don’t want you to read here. I’m hoping to contribute to a Streisand effect. This week, the time has come to an old 2012 paper: Rushton, J. P., & Templer, D. I. (2012). Do pigmentation and the melanocortin system modulate aggression and sexuality in humans as…
Continue ReadingA lot of instant experts have appeared on the black-white crime question. Many of these are somewhat unfamiliar with the quite large literature on the topic. The people who mostly study crime are criminologists and sociologists. However, as we know, these are some of the most left-skewed academics out there: Prior post: Do Republic professors…
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