Earlier today there were an article looking at gender ratios in professions between 1950 and 2015. Some professions flipped between being male and female domina

Earlier today there were an article looking at gender ratios in professions between 1950 and 2015. Some professions flipped between being male and female dominated several times, and this without massive biological shift of both women and men, and multiple times. A theory that tries to explain gender segregation need to explain why profession flip and sometimes oscillate between male and female dominance, why the gender equality paradox in places like Sweden where 85% of both women and men work in gender segregated work places, and why even within the same work place women and men tend to gender segregate even within the same profession (such as teachers gender segregating based on teaching subject). A really old but fairly accepted theory is that a person feel more safe and confident when in the dominant group. People will thus have preference to such places. The theory is pretty good in explaining why people gender segregate but not why professions flip between male and female dominance. A common theory to explain that is than gender roles pushes men towards high income professions and socially punish those that don't, creating a preference for men but not women to prioritize high income professions over professions that offer other benefits.