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Differential psychology/psychometrics

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Read more about the article The general disease (“d”) factor and mutational load

The general disease (“d”) factor and mutational load

  • Post author:Emil O. W. Kirkegaard
  • Post published:21. July 2024
  • Post category:Differential psychology/psychometrics/Medicine

Last year, this study was published: Brandt, V., Zhang, Y., Carr, H., Golm, D., Correll, C. U., Arrondo, G., ... & Cortese, S. (2023). First evidence of a general disease…

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Read more about the article The ethnic meritocracy in the United Kingdom

The ethnic meritocracy in the United Kingdom

  • Post author:Emil O. W. Kirkegaard
  • Post published:15. July 2024
  • Post category:Immigration/intelligence / IQ / cognitive ability

Some of my colleagues have a new paper out: Te Nijenhuis, J., Pesta, B. J., & Fuerst, J. G. R. (n.d.). General mental ability testing and adverse impact in the…

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Read more about the article The value of intelligence

The value of intelligence

  • Post author:Emil O. W. Kirkegaard
  • Post published:12. July 2024
  • Post category:Economics/intelligence / IQ / cognitive ability

There are many studies that report correlations between intelligence -- however measured -- and economic outcomes, mainly (self-reported) income. This is however somewhat abstract since correlations are unitless. They don't…

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Read more about the article The first admixture mapping study for intelligence

The first admixture mapping study for intelligence

  • Post author:Emil O. W. Kirkegaard
  • Post published:5. July 2024
  • Post category:Genomics/intelligence / IQ / cognitive ability

There's a new study out of note: Xia, R., Jian, X., Rodrigue, A. L., Bressler, J., Boerwinkle, E., Cui, B., ... & Fornage, M. (2024). Admixture mapping of cognitive function…

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Read more about the article The gender equality ‘paradox’ and genetics

The gender equality ‘paradox’ and genetics

  • Post author:Emil O. W. Kirkegaard
  • Post published:17. June 2024
  • Post category:Differential psychology/psychometrics/Social psychology

There's a number of studies that find that egalitarian cultural values correlates with larger not smaller actual measured sex differences. These are the first major studies using large international surveys:…

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Read more about the article Reaction time based intelligence measurements and race differences

Reaction time based intelligence measurements and race differences

  • Post author:Emil O. W. Kirkegaard
  • Post published:14. June 2024
  • Post category:intelligence / IQ / cognitive ability

There's a wide variety of different ways to measure (general) intelligence, or what researchers call g. One can estimate vocabulary size, query about verbal analogies, general knowledge, ask people to…

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Read more about the article High IQ trans and nonbinary confirmed

High IQ trans and nonbinary confirmed

  • Post author:Emil O. W. Kirkegaard
  • Post published:3. June 2024
  • Post category:intelligence / IQ / cognitive ability/Psychiatry

If you have been paying attention, you will probably have noticed that a lot of the trans and non-binary people seem to be quite bright. Indeed, that's one of the…

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Read more about the article On Jewish intelligence

On Jewish intelligence

  • Post author:Emil O. W. Kirkegaard
  • Post published:24. May 2024
  • Post category:intelligence / IQ / cognitive ability

Ah, yes, the perennial Jewish question. Historically, the Jewish question was what to do with the Jews from the perspective of those running countries: tolerate, integrate, convert, expel, or exterminate?…

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Read more about the article Can’t say parasites causes low IQ either

Can’t say parasites causes low IQ either

  • Post author:Emil O. W. Kirkegaard
  • Post published:21. May 2024
  • Post category:intelligence / IQ / cognitive ability/Medicine

Ever since Richard Lynn started compiling national intelligence averages (national IQs), there has been egalitarian minded researchers using these to find evidence of non-genetic causes of group differences. One frequently…

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Read more about the article Did high IQs protect top Nazis at Nuremberg?

Did high IQs protect top Nazis at Nuremberg?

  • Post author:Emil O. W. Kirkegaard
  • Post published:19. May 2024
  • Post category:Criminology/intelligence / IQ / cognitive ability

The Nazis famously carried out a number of atrocities involving the populations under their dominion. Most famously, this involved the mass murders of Jews in Europe, but quite a number…

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