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TagIntelligence quotient (IQ)

IQ test Result, Very Superior Intelligence Quotient.

If IQ Is Inherited, Is the Intellect Simply Material?

A reader writes: I was reading your writings about mind and brain, and I was wondering about how IQ relates to all of this. Since IQ seems to have a large heritable component to it, and the only thing that can be inherited genetically is physical traits, does IQ and its heritability pose a threat to mind-body dualism? It seems to me that someone with an IQ of 75 would have a very different mental experience than someone with an IQ of 145, and that they would also make decisions very differently, which, to me at least, would pose a threat to free will as well, since wouldn’t a certain level of intelligence be required to make decisions freely in…

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Are We Humans Getting Smarter or Have We Peaked?

The really surprising thing, science writer David Robson notes, is that it may not matter as much as we think

The Flynn effect — where tested intelligence increased over past generations due to better health and more education — is said to be slowing. Of course, such findings are difficult to assess because they are subject to value judgments. But David Robson, author of The Intelligence Trap: Why smart people make dumb mistakes (2019), offers some useful observations, including asking what does the Flynn effect really measure?: James Flynn himself has argued that it is probably confined to some specific reasoning skills. In the same way that different physical exercises may build different muscles – without increasing overall “fitness” – we have been exercising certain kinds of abstract thinking, but that hasn’t necessarily improved all cognitive skills equally. And some…

Girl business woman sitting at a wooden table with a laptop and discussing a new project with her mentor boss teacher. The man is fooling around. New business development concept

Why Intelligent Women Marry Less Intelligent Men

Are they trying to avoid competition at home as well as at work? Or is there a statistical reason we are overlooking?

When I read that Ruth Bader Ginsburg’s late husband was a wonderful man but less accomplished than his wife, I was reminded of “Ivy,” one of the most impressive students I ever had the privilege to teach. Ivy excelled in her coursework, won a prestigious scholarship for postgraduate study in England, went to a top-five law school, clerked for a Supreme Court Justice, and is now a law professor at a great university. Like Ruth Ginsberg (1933–2020, pictured), Ivy married a man who is very nice but less intelligent than she. This is not an unusual situation. I made a list of the dozen most intelligent female students with whom I’ve kept in touch over the years. These women are…