A recent study in the journal Hormones and Behavior found that genetics play a key role in the career choices we make. In short, men become astronauts and women prefer nursing because of our biological nature, not environmental factors.
In our society, males are more likely to work in fields dealing with "things" like science, technology, engineering and math (STEM); whereas women lead the ranks in creative careers and those based on serving people. That's just the way things are — but is it based on sexism, which is a social construct, or is there a biological reason?
A team from Penn State University studied teenagers and young adults with congenital adrenal hyperplasia (CAH) — a genetic condition — and their siblings without the condition. While in the uterus, those with CAH have more exposure to the male sex hormone called androgen than is normal. Females with CAH are genetically female, but their interests tend to be more "trucks" than "Barbie." So when it comes to choosing a career, these women prefer jobs related to "things" rather than "people," as opposed to most females.
As always, I thank the Rule 5 Wombat for his link on the Other McCain's weekly Rule 5 post, and The Classical Liberal for his link.
Rule 5: All politics (or science) all the time is boring, and everybody loves a pretty girl. There are two other points, but they don't really matter...