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.”

What is the two-factor theory of intelligence?

Blog / By Brendan Kelly Ph.D.

English psychologist, Charles Spearman, tested 23 boys in a preparatory school near Oxford on a variety of achievement tests in each of: classics, French, English, mathematics, discrimination of pitch, and music. On analyzing the test results, he asked, “What pervasive cognitive faculty accounts for the fact that a student who does well on any of …

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Can you become a brilliant theoretical physicist with an average IQ (95-105)?

Blog / By Brendan Kelly Ph.D.

In 2005, Professor Larry Summers, President of Harvard University, stated, “The physicists in the top 25 universities in the US are probably 3.5 standard deviations above the mean IQ.” This equates to an IQ of 100 + 3.5 x 15 or 152.5. IQ is a reasonably good measure of the ability to think in abstract …

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