Emil O. W. Kirkegaard blog
Russell Warne has a new post: Implications of average group differences for the design of intelligence tests He writes: The implication is that if test creators can force an average difference to disappear for one pair of groups (i.e., males and females), then any differences or lack of differences are also engineered into the tests….
I know some people are who are into conspiratorial thinking about COVID vaccines. Bill Gates trying to decrease your fertility stuff. Anyway, so I did the science thing, that is, I used a neutral search on an academic search engine to locate actual data on the question. Specifically, Google Scholar with the query “Covid vaccine…
Raymond Cattell was one of the early 1900s eminent psychologists. Like Meehl, he had a philosophical bent with some odd ideas in ethics. That ended up getting him into trouble (like yours truly). So I found one of his older books, from 1937, so before World War 2, and decided to give it a shot….
This is a short book summarizing human biodiversity stuff. Since it’s from 2013, it doesn’t cover the latest tranny-mania, but otherwise it covers a lot of ground. Acknowledgements sets the tone for the book: I would also like to acknowledge the kind words and suggestions of those who reviewed this project. I have endeavored to…
So I’ve gone back to my old habit of binge reading on mostly unrelated topics to my main work in the genetics-social science cluster. Climate science is a long running interest of mine, why not read some more of it! Of the two, Koonin’s book will teach you a lot more about the data. It…
Kirkegaard, E. O. W., & Nyborg, H. (2021). Intelligence and General Psychopathology in the Vietnam Experience Study: A Closer Look. Mankind Quarterly, 61(4). https://doi.org/10.46469/mq.2021.61.4.2 Prior research has indicated that one can summarize the variation in psychopathology measures in a single dimension, labeled P by analogy with the g factor of intelligence. Research shows that this…
Many countries add fluoride to the drinking water in the belief this will improve dental health. As with anything else public health, some people think this is a grave mistake. So on the positive side, it seems to help with the intended target, a good start for any social policy. Wikipedia’s summary is kinda what…
One very basic fact of humans is that ability to do anything varies. This is also true for ability to do cognitively demanding jobs of which the main requirement is general intelligence. This trait follows a well known normalish distribution in the population. In general, then, it follows that the more people society dedicates to…
This one came out in Februrary, so we are a bit behind, but that’s because I wanted to time the blogpost with the video. Aaaand the video is online now. Pesta, B. J., Fuerst, J. G. R., & Kirkegaard, E. (2021). County-level USA: No Robust Relationship between Geoclimatic Variables and Cognitive Ability. Journal of Geographical…
Forgot to blog this one earlier. It’s a video walkthrough of the usual sorts, based on my paper in Mankind Quarterly back from March: Kirkegaard, E. O. W. (2021). Are there Complex Assortative Mating Patterns for Humans? Analysis of 340 Spanish Couples. Mankind Quarterly, 61(3). https://doi.org/10.46469/mq.2021.61.3.12 Assortative mating for both physical and psychological traits is…
