> Testosterone has effects on competition, so there could still be bias there

Oh. And that would be a biological, innate difference in behaviour between men and women, wouldn't it?

And even if women are as good as men at maths or computer programming- which wouldn't surprise me much- can't they be just less interested in it, just in the same way they're less interested (as you seem to imply) in competition?

And could I be as good as the average woman in teaching or as a nurse? Possible. Am I interested in it? No.