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.

Featured Image

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 My co-authors and I show that these individuals rely on nonrepresentative samples, outdated test norms, and/or confirmation bias in justifying their beliefs.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.
You can read the full text:




The following have contributed to this page