Reply To: Why Are Men More Intelligent Than Women?

In a study accepted for publication by the British Journal of Psychology, Dr. Paul Irwing (Manchester Business School, Senior Lecturer in Organizational Psychology) and Prof. Richard Lynn (University of Ulster, Professor Emeritus) conclude that men are on average five points ahead on IQ tests. The study also found that men outnumbered women in increasing numbers as intelligence levels rise. There were twice as many with IQ scores of 125, a level typical for people with first-class degrees. When scores rose to 155, a level associated with genius, there were 5.5 men for every woman.

The male variance in IQ is greater than that for females; Arthur Jensen says this difference is greatest in math and spatial ability. In math the male variance is 1.1 to 1.3 times greater (he does not give the difference for total IQ or g). In the high range, at or above the 98th percentile there are about twice more males than females, while at or above the 99.9th percentile there are about 15 times more males.