What is it about?

Some people believe that there are more gifted or high IQ individuals than expected. My student co-authors and I explored this possibility with real datasets and found that there is no excess of bright people in the general population.

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Why is it important?

The assumption of test creators and many psychologists has been that intelligence is normally distributed. However, some people believe that there is a surplus of people in the high ability range. My co-authors and I show that these individuals rely on nonrepresentative samples, outdated test norms, and/or confirmation bias in justifying their beliefs. The conclusion is that there are approximately the same number of high-IQ individuals that one would expect from a normal distribution.


This was my first article on human intelligence, and since then I've published a few more. My student co-authors were great to work with, and I like this article and its reliance on real datasets. Please also note the corrigendum which I requested (and was issued) in 2018, which corrects a slight error in a table. This is the first correction to an article in the history of the Journal of Advanced Academics.

Dr Russell T. Warne
Independent Scholar

Read the Original

This page is a summary of: Are There More Gifted People Than Would Be Expected in a Normal Distribution? An Investigation of the Overabundance Hypothesis, Journal of Advanced Academics, November 2013, SAGE Publications, DOI: 10.1177/1932202x13507969.
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