The S factor in China
Study PDF. Abstract I analyze the S factor in Chinese province-level units using data obtained from Lynn and Cheng (2013) as well as new data obtained from the Chinese statistical…
Indian states: G and S factors
Paper PDF. Abstract I reanalyze data published by Lynn and Yadav (2015) for Indian states. I find both G and S factors which correlate at .61. Method of correlated vectors…
Review: Superintelligence (Nick Bostrom)
Goodreads. Ebook. To those who don't know Bostrom, he's a prof of filosofy at Oxford. His book concerns superintelligence which is defined "any intellect that greatly exceeds the cognitive performance…
Review: What Intelligence Tests Miss: The Psychology of Rational Thought (Stanovich, 2009)
https://www.goodreads.com/book/show/6251150-what-intelligence-tests-miss MOBI on libgen I've seen this book cited quite a few times and when looking for what to read next, it seemed like on okay choice. The book is…
Gender distribution of comedians over time
It is a long time ago since I did this project. I did not write about it here before but it is a pity since the results are thus not…
Predicting immigrant performance: Does inbreeding have incremental validity over IQ and Islam?
https://twitter.com/KirkegaardEmil/status/555217814488092673 So, she came up with: https://twitter.com/hbdchick/status/555223247244242944 So I decided to try it out, since I'm taking a break from reading Lilienfeld which I had been doing that for 5…
Age differences in the WISC-IV has a positive Jensen coefficient, maybe
Group differences in cognitive scores have generally been found to be g-loaded, i.e. the differences are larger on the items/subtests that load more strongly on the general factor. This is…
Intelligence, income inequality and prison rates: It’s complicated
There was some talk on Twitter around prison rates and inequality: https://twitter.com/JayMan471/status/553912823215325184 And IQ and inequality: https://twitter.com/KirkegaardEmil/status/553937263953190912 But then what about prison data beyond those given above? I have downloaded…
Do different intelligence tests measure the same g?
The most direct way to test this is to employ latent variable modeling (SEM/CFA) and correlate the general factors from different IQ batteries. Below I quote the abstracts from all…
The inconsistency of studies of gender differences in cognitive abilities: due to using different methods?
I read this study: Palejwala, M. H., & Fine, J. G. (2015). Gender differences in latent cognitive abilities in children aged 2 to 7. Intelligence, 48, 96-108. It reminded me…