How can ethnocentrism have a positive and negative consequences for group life?

people who are born into a particular culture usually belieove that the "learned culture is the right culture" but there is nor right or worng culture in this world it is only what we choose to believe is right.

ex: Muslim men believe women are not entitled to their own opinion why? bc they were raised with that belive which makes them think that women who speak their mind in America sghould be punished.