Our analysis of a large representative American sample from the National Longitudinal Study of Adolescent Health shows that this is indeed the case.  In fact, once we control for height, women are slightly but significantly more intelligent than men.  Further controlling for health, physical attractiveness, age, race, education, and earnings does not alter this conclusion.  Height has exactly the same effect on intelligence for men and women:  Each inch in height increases the IQ by about .4 point.  The partial effect of height on intelligence is more than three times as strong as the partial effect of sex.So it is not that men are more intelligent than women, but that taller people are more intelligent than shorter people,http://www.psychologytoday.com/blog/the-scientific-fundamentalist/200901/why-men-are-more-intelligent-women