I’ve mentioned it repeatedly on HN and have never so much as gotten a rise out of anyone. (I should also point out that the SAT folks publish a detailed report on SAT gender differences each year and nobody blinks an eye.) The problem is that it doesn’t explain the disparity in STEM—it cuts against it.
Men outrepresent women about 2:1 among perfect SAT Math scores. Let’s assume for the sake of argument that this represents a real difference in mathematical ability. Even if programming ability were 100% correlated with mathematical ability, you’d expect a much higher ratio than you see in practice. That is strong evidence that women are kept out of STEM for other reasons. Beyond that (1) the pool of programmers isn’t just people with perfect SAT scores—the representation gap rapidly disappears as you go from top 0.5% to top 5%; (2) professions leverage other competencies too. The same 2:1 difference shows up in the top percentile of the LSAT and MCAT, but those fields are more gender balanced because women applicants tend to have better college GPAs.
Anecdotally: I went to a competitive admissions STEM high school, where admissions is gender blind and based heavily on an SAT-like test. The ratio was about 60:40 boys, about what you’d expect from the required testing percentiles. CS was required for all students so it is gender balanced. But APCS was overwhelmingly boys, not because it was full of the best math minds, but I suspect because we’d play DOOM if we got our assignments done early.