That means, as Matt Zeitlin summarizes at Think Progress, "fields with lots of men in them are those that women are most likely to exit." But what are the exact mechanisms, then?
This isn't an earth-shaking result, but it seems like in a lot of casual conversation about topics like this, even smart people are very prone to putting forward explanations that rely on speculative generalizations about the specific nature of a field they don't know a ton about. It could just be that there is a positive feedback loop for the amount of women in a field. And since it's unlikely that there's a deep, good reason for engineering and the sciences to be male dominated, there should be an explicit effort to just get women into science and engineering and for them to stay.Are women leaving science and engineering simply because there are already too many men?