Intuitively, I don't understand why computer science engineering would have a lower ratio than engineering in general from a biological perspective. Or physics vs chemistry. Or structural engineering vs electrical. Which of the above fields have to do with playing with dolls vs playing with inanimate objects (are dolls not inanimate objects)? Which of the above fields is more aggressive in the academic pursuit? (I've never considered computer science, with a very low ratio compared to other STEM pursuits, to be more aggressive...)

That confusion is why I'm having a lot of difficulty personally buying that much of the differences can be attributed to biological differences in women and men. I feel like I'm missing some evidence where it is proven computer science is more aggressive than, say, structural engineering- and that's why there is a bigger representation of men in computer science.