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Differential psychology/psychometrics

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Read more about the article Who wants to die for globalists?

Who wants to die for globalists?

  • Post author:Emil O. W. Kirkegaard
  • Post published:5. September 2022
  • Post category:intelligence / IQ / cognitive ability

Men constitute the vast majority of the fighting power of a country. When women make inroads by political forcing, the results are often comical or disturbing, depending on your level…

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Read more about the article Collected works of Robert A. Gordon

Collected works of Robert A. Gordon

  • Post author:Emil O. W. Kirkegaard
  • Post published:29. August 2022
  • Post category:intelligence / IQ / cognitive ability

Robert (Bob) Arthur Gordon (born August 10, 1932, so age 90 as of writing) is an American sociologist notable enough to have a short Wikipedia page (well for now). He…

Continue ReadingCollected works of Robert A. Gordon
Read more about the article Cognitive and income inequality: the relationship that wasn’t

Cognitive and income inequality: the relationship that wasn’t

  • Post author:Emil O. W. Kirkegaard
  • Post published:26. August 2022
  • Post category:Economics/intelligence / IQ / cognitive ability

The theoretical prediction seems straightforward. If income is a function of intelligence (and other factors), then all else equal, a country with more inequality in intelligence will have more inequality…

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The worldwide prison rates mystery

  • Post author:Emil O. W. Kirkegaard
  • Post published:25. August 2022
  • Post category:Criminology/intelligence / IQ / cognitive ability

I regret to inform you that they are at it again. That is, blocking me on Twitter for the wrong ideas. It started benignly, as it usually does, with a…

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Read more about the article How many people get arrested?

How many people get arrested?

  • Post author:Emil O. W. Kirkegaard
  • Post published:18. August 2022
  • Post category:Criminology/intelligence / IQ / cognitive ability

A friend of mine sent me this article for evaluation. Basically he thought the findings were too wild to be believed: Brame, R., Bushway, S. D., Paternoster, R., & Turner,…

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Read more about the article African IQs using only age heaping data

African IQs using only age heaping data

  • Post author:Emil O. W. Kirkegaard
  • Post published:17. August 2022
  • Post category:intelligence / IQ / cognitive ability/Math/Statistics

Age heaping is a fascinating method. I blogged about it back in 2015, hoping that someone would take up the idea of fusing this literature from historical economics with modern…

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Read more about the article Buj (1981) is probably fraudulent and shouldn’t be used

Buj (1981) is probably fraudulent and shouldn’t be used

  • Post author:Emil O. W. Kirkegaard
  • Post published:15. August 2022
  • Post category:intelligence / IQ / cognitive ability

There's an odd old paper sometimes mentioned and even worse, used for calculations: Buj, Vinko. (1981). Average IQ values in various European countries. Personality and Individual Differences, 2(2), 168-169. Paper…

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Read more about the article The Mensa fallacy

The Mensa fallacy

  • Post author:Emil O. W. Kirkegaard
  • Post published:14. August 2022
  • Post category:intelligence / IQ / cognitive ability/Psychiatry

Back in 2015 at ISIR, a researcher gave a presentation about mental illness and intelligence, reporting it was elevated at high intelligence levels, along with all kinds of other issues.…

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Read more about the article African IQs without African IQs: it’s complicated

African IQs without African IQs: it’s complicated

  • Post author:Emil O. W. Kirkegaard
  • Post published:7. August 2022
  • Post category:intelligence / IQ / cognitive ability

Noah Carl has recently written about the African IQs debate, basically defending the usual numbers. Aside from arguing that the data are good enough to use, though obviously not perfect,…

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Read more about the article Book review: At Our Wits’ End (Ed Dutton, Michael Woodley, 2018)

Book review: At Our Wits’ End (Ed Dutton, Michael Woodley, 2018)

  • Post author:Emil O. W. Kirkegaard
  • Post published:31. July 2022
  • Post category:Genetics / behavioral genetics/intelligence / IQ / cognitive ability/Linguistics/language

I try to read many different kinds of books each year. Outside of my own fields, I try to consume high quality popular science, but mainly read academic books within…

Continue ReadingBook review: At Our Wits’ End (Ed Dutton, Michael Woodley, 2018)
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