From the evolutionary perspective, human sex differences reflect the pressure of differing physical and social environments between females and males in primeval times.
It is believed that each sex faced different pressures and that the differing reproductive status was the key feature in life at that time.
It is believed that situations faced by each sex are variable in societies and cultures and historical periods and that there are changes are in responses to technology, ecology, and social organization.
Because men are bigger and stronger, they are given more attention and respect in our society.
The differences between genders are not based psychologically but are influenced socially.
Evolutionary psychology indicates that characteristics that people seek in mates depend on their sex and whether it is a short-term or a long-term mating.
Women are limited in the number of children they can have during their lifetime.
This explains why men and women differ psychologically: They tend to occupy different social roles (Eagly & Wood, 1999).
Evolutionary psychologists explain sex differences as based on differing parental investment.