No, that's not the argument, perhaps read all the slides, in particular slides 20/21. It's true that cs doesn't involve a lot of math, but that's really just a side point and a little in joke for mathematicians. The argument is the disparity is so small that it could not account for the massive disparity we see in tech.
Re your question on biological or psychological causes, why limit your consideration to those areas? The evidence points to social or economic causes, given the large shifts in women over just a few decades:
Re your question on biological or psychological causes, why limit your consideration to those areas? The evidence points to social or economic causes, given the large shifts in women over just a few decades:
http://www.npr.org/sections/money/2014/10/21/357629765/when-...