They are difficult to prove because they are exceedingly general and abstract. Try this one from the article: "Openness directed towards feelings and aesthetic

They are difficult to prove because they are exceedingly general and abstract. Try this one from the article: "Openness directed towards feelings and aesthetics rather than ideas. Women generally also have a stronger interest in people rather than things, relative to men (also interpreted as empathizing vs. systemizing). These two differences in part explain why women relatively prefer jobs in social or artistic areas." I have to say there could be other reasons for this. A big one is that people gravitate toward things where other people like them already are. They have a tendency to emulate. It takes unique people to break out of molds and do things that others don't expect of them. Or that aren't familiar or socially comfortable to do. Same for men. Now it could be true this is related to an innate trait. But who cares? We're talking about 50% of the population and the differences between people are aplenty. Companies have no business in deciding what's the right thing for any group anyway. Whatever people's motivations are - biological or something they came up with yesterday ultimately isn't anyone else's business.