Women show their emotions more than men and are more facially expressive for both positive and negative feelings. A major difference between the emotions of men and women lies in the expression of aggression, for which men enjoy a pronounced physical advantage. It has an evolutionary origin related to hunting and protection. This matters, as men have discriminated against women and dominated them in all societies from the earliest known times. Women can be aggressive but their aggression tends to be less physical. But girls and women with (CAH), which increases testosterone in the womb, are more like males, with an increase in physical aggression.
There are also fundamental differences in brain development between men and women, which are clear from the early behaviour of children. A few hours after birth, girls are more sensitive than boys to touch, and 40 hours after birth girls look longer at a face than boys, while boys look longer at a suspended mechanical mobile. At four months old, if babies are frightened in a strange room, twice as many girls as boys cry. Children’s play provides further evidence for genetic differences. At 12, 18 or 24 months, girls look at dolls much more than boys, while boys look at cars much more than girls. It is hard to attribute these basic differences at such young ages to purely social influences.
Yes, it's official, men are from Mars and women from …
So there really are significant biological differences between men and women from before birth until death. These influence their basic sexuality, careers, psychology, emotional make-up, skills and health. Social factors undoubtedly come into play too, but there are many ingrained myths, for which the evidence is very poor, such as women being less intelligent than men or speaking much more than men; and some trivial myths for which the evidence is quite good, such as men being better at map-reading and women poorer at parallel parking.