Great response, but be careful with the studies you use, they often talk about high school, and we both know high school math is almost 100% rote, (i was a high school math teacher, now web dev). Which is why I believe that girls tend to do better then boys in high school, but then in post secondary it’s switch's, but that is just a guess.
So if the differences in gender number in tech are not because of biology then what do you think is going on?
As someone with mild autism, I have always found working with math and computers so much easier then well anything else, as do most people with autism. Men and boys are more likely to have autism, http://www.autism.org.uk/about/what-is/gender.aspx.
This would be a biological reason for having more men in certain types of jobs and women in other.