Attacking a study for using a non-representative, typically online convenience sample is common practice. However, for most studies, this is wrong-headed and here I want to argue why that is so. AellaGirl recently caused a lot of these reactions because she analyzed huge convenience samples of her o| Clear Language, Clear Mind
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 familiar with the different lines of evidence that make it plausible. As such, it would be useful with a new brief summary of| Clear Language, Clear Mind
I tweeted about this already, but I'm dumping some notes here for future reference. The Wordsum is a 10 word vocabulary test that's been used for decades as a brief measure of intelligence. It's most prominently used in the General Social Survey (GSS), a recurrent US survey of various social matt| Clear Language, Clear Mind
In the last days of 2022, Noah Carl and I had a new paper out: Kirkegaard, E. O. W., & Carl, N. (2022). Smart Fraction Theory: A Comprehensive Re-evaluation. Comparative Sociology, 21(6), 677-699. Previous studies have found that the ability of a country’s cognitive elite is generally mo| Clear Language, Clear Mind
Every year I try to read a set number of books (30 this year). I've been decreasing the number over the years because blogs and academic articles have become so much more readily available and better. Why read a book, already at least slightly out of date, when blogs will provide you with up to date| Clear Language, Clear Mind
This term deserves more widespread use, since the fallacy is still so common, more than 50 years after it was given a name. I have traced the naming of it back to 1969, in an obscure reply from Jensen to a critic: Jensen, A. R. (1969). Counter Response. Journal of Social Issues, 25, 219-222.| Clear Language, Clear Mind
Ed Dutton and I have a new study out: Kirkegaard, E. O. W., & Dutton, E. (2022). Will Intelligent Latter-day Saints and Smart Conservatives Inherit the Earth? Differential Selection for Intelligence in the USA Based on Religiosity and Conservatism. Evolutionary Psychological Science, 1-12.| Clear Language, Clear Mind
We've been over this topic previously in 2017, but since this is the eternal idea, let's look at more data. Let's start historically. 1969 Arthur Jensen's famous article “How much can we boost IQ and scholastic achievement?” Compensatory education has been tried and it apparently has failed. Co| Clear Language, Clear Mind