Gender binary the classification of people into one of two categories. Gender role a set of norms or culturally defined expectations, that define how people of one gender out to behave. Stereotype a rigid set of beliefs about a group of people that distinguishes them from others and is applied to all members of that group: children as young as 6 are aware of stereotypes. Gender schema theory: a gender schema is the set of ideas that we associate with males or females, schemas influence how we process information. The ways in which society conveys to the individual its norms or expectations. Gender socialization comes from parents, peers and the media: the parents being the strongest encouragers of gender identities. Ethnicity refers to a sizable group of people who share a common and distinct racial, national, religious, linguistic or cultural origin.