It’s not outside his area of expertise. He’s an economist. He’s wondering why a certain job in society is not equally filled by men and women, and he’s looking at the root causes of it. That’s what economists do.
If someone thinks a “gender studies expert” or “gender anthropologist” has a better chance of getting to the bottom of this than a guy with economics degrees from MIT and Harvard, they’re crazy.
A couple more things.
Just because people were wrong about bio-determinism in the past doesn’t mean that it’s always wrong.
When it’s a fact that women have lower achievement in math & science, you need to start from the ground-up in these things, and not throw away any hypothesis.
My own personal experience. . .
From what I understand, women in the past may have been discouraged from Math & Science, but that doesn’t immediately explain why it’s a problem today. I was a mathematics undergraduate, and an applied mathematics graduate student. There are women’s mathematics awards, women’s mathematical scoieties, women in engineering advocacy groups, etc. etc. etc. If there is pressure against women going into higher mathematics, it was too subtle to show up on my radar. But, I know its not that simple.
So, while I’m willing to keep an open mind on the subject of innate gender differences, I will say this, I never thought there were innate differences at all. At all. Zero, nada, zilch, and if there were, to quote myself, it was too subtle to show up on my radar.
I’m pretty sure more women from my undergraduate class went to graduate school than men.
On the other hand, none of the women I entered graduate school with finished their Ph.D.s and I don’t know what to say about that. The women who pulled out seemed to do it for the same reasons as me. . .you get up around 28 or so and you start thinking about a family, kids, job, whatever. We all get to the point where that’s a choice you have to make. I wouldn’t doubt for a second that at that point there’s a lot more pressure to leave on the woman than there is on the man.
As far as any discernible gender differences in ability, I didn’t notice it all at any level in my education.