Why aren't there more women math professors? Or engineering professors, or physics professors, or professors of computer science or economics? Why aren't there more women tech entrepreneurs? If a field involves lots of numbers, why does it seem to involve so few women? Some people say it's discrimination, others say socialization and few, including a former Harvard university president, have said ability has something to do with it. (That's largely why he's "former.")

Now a husband and wife team, both academics (with three daughters), have analyzed the cognitive data and decided it's not really any of these. It's mostly about female preference and motherhood. Read the full article