Re: Intelligence on the X chromosome

Bryant (
18 Aug 1996 11:04:39 -0600

In article <>,
catherine yronwode <> wrote:

>Actually, the multiplicity of these genes and the presence of all of
>them on the X chromosome was hypothesized by the researchers to account
>for the fact that women's intelligences tend to cluster around a
>bell-curve average but men have a split-pattern distribution of
>intelligence, including more retarded and more genius level minds than

I'm not aware of any study which suggests that IQ is bimodally
distributed in men.

It should be pointed out that there is a lot of doubt about there even
being a "general" intelligence, as such (a general-purpose calculuating
machine model of the brain). Men tend to score lower than women in
verbal intelligence tests, for instance, while men tend to score higher
than women in spatial and quantitative tests.