Verified answer

It really depends on the culture in which they were bred and grew up in

We live in a society of technology where social media is a very big factor of everyone lives as well as being connected through the internet to many people

Things like posting selfies on instagram twitter Facebook etc and getting likes and comments seems to be something that is particular to this age cohort of women millenials and post millennials

However in my travels to countries far outside western society for ex poor rural farm areas like in Vietnam where my wife came from isolated from technology far away from urban city life and western influence we don't see this phenomenon

Out there they don't have fancy smart phones and home computers laptops wifi internet only

TV don't have that many channels and it's only local TV . the rich do though so they grow up quite differently

It is a biological trait. In the Neolithic period women who didn't belong to a man simply died from starving or exposure if they were not eaten by predators first.

they're just born that way. more self aware. more concerned with what others think

Men in general may be more confident than women, but that can lead to a lack of awareness of how competent they actually are.

Society breeds female self hatred