Brendan Kelly Ph.D.

Brendan Kelly is Professor Emeritus at the University of Toronto. He is author of over 50 books including the recent "Intelligence, IQ & Perception", and "Intelligence: Where we Were, Where we Are & Where we’re Going." He holds two doctorate degrees: a Ph.D. in Mathematics (Number Theory) from U. of T. and an Ed.D. in Computer Applications from the Ontario Institute for Studies in Education, and he curates his site on Quora titled, “IQ & Intelligence.”

Can IQ tests actually measure your personal intelligence instead of your knowledge?

In 1936, John C. Raven attempted to address the criticism that the prevailing IQ tests were culturally dependent, because people from educationally deprived environments may not have been exposed to an expansive vocabulary or knowledge specific to a particular culture. To address this criticism, and make tests of intelligence independent of knowledge, he developed the …

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How likely is the child of two really high IQ individuals to have a significantly lower IQ?

In an 1886 publication, Sir Francis Galton graphed the heights of 205 adults and 928 of their adult offspring. From these data, he asserted that the height of an offspring deviates from the average height in the adult population by only two thirds of the parent’s deviation from the average. In other words, children of …

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How can you tell if someone has a high IQ based on their behavior?

It’s very difficult to assess someone’s intelligence during a brief meeting, but the longer you share conversation with that person, the more accurate will be your assessment. Here are some characteristics I have found in the very high IQ people I’ve met although these are, of course, generalizations that will have some counterexamples. High IQ …

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Why is IQ so much more variable in childhood than in adulthood?

To answer your question in a nutshell: the human brain grows rapidly throughout childhood reaching a peak in early adulthood. Research suggests that our fluid intelligence (a major portion of our IQ) stabilizes between ages 16 and 20 and then goes into a gradual decline. Throughout adulthood, we gain experience, and depletion in our fluid …

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Is it a good deal if you lose your IQ but gain wisdom?

Actually, a higher than average IQ is probably necessary for the development of wisdom, so one cannot lose too many IQ points and still gain wisdom. Before elaborating, I will provide Aristotle’s distinction between IQ and wisdom. In the quote below, Aristotle uses the term “Prudence” to describe wisdom. Although the young may be experts …

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Do very high IQ people tend to be responsible and good with their money, or more frivolous and uncaring with their spending?

In my upcoming book titled, Intelligence, IQ, and Perception: Unpopular Truths Exploding Popular Myths, I devote a chapter to the question, “Are Smarter People Wealthier?” An excerpt is included below: In a research paper published in 2007, titled Do you have to be smart to be rich? The impact of IQ on wealth, income and …

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Why is it that there are quite a few high IQ societies, but none for high EQ? Is it mainly because currently EQ is more difficult to measure, and has greater variance compared to IQ?

Yes. Research reveals that the concept of emotional intelligence is not well defined and seems to be conflated with other variables such as IQ and personality. The validity of tests designed to measure emotional intelligence, hinges on their ability to assign scores to item responses purported to measure EQ. One of the most prominent of …

Why is it that there are quite a few high IQ societies, but none for high EQ? Is it mainly because currently EQ is more difficult to measure, and has greater variance compared to IQ? Read More »

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