>From mere brain volume you can't infer to intellectual abilities.
>Or have women less average IQ, with their (100g) smaller brain?

Actually, women as a group do indeed have a slightly lower IQ than
men, although the difference is quite small. Much more important
is the fact that women's IQ standard deviation is considerably smaller
than men's, which is why our remedial education classes AND
our boardrooms have and will always have a preponderance of men.

Dave Fobare