Women, Rosin argues, are like immigrants who have moved to a new country. They see a new social context, and they flexibly adapt to new circumstances. Men are like immigrants who have physically moved to a new country but who have kept their minds in the old one. They speak the old language. They follow the old mores. Men are more likely to be rigid; women are more fluid.
This theory has less to do with innate traits and more to do with social position. When there’s big social change, the people who were on the top of the old order are bound to cling to the old ways. The people who were on the bottom are bound to experience a burst of energy. They’re going to explore their new surroundings more enthusiastically.