However, these were the days before compilers. Programming back then was a very different affair from nowadays, involving a lot of office work, as well as other kinds of semi-skilled work that were back then (and would likely still be to some extent) perceived as typical women's work. I'd be wary of any generalizations to today's situation in computing without studying the issue in much more detail.
The Trouble with Bright Girls (article @ the Huffington Post)
Excerpt:
The topic of this article seems to relate to several common Less Wrong issues: the nature of human intelligence, and the gender imbalance among LW readers.
I'm not sure how much credence I give to the proposed explanation of the difference in mindsets. It may well have to do with socialization and feedback, but the specific description of feedback that is presented seems a bit too much of a "just-so story" to me. The difference itself is fascinating, though, and I hope more is done to further our understanding of it.