There might be a blizzard of overlapping influences - self-confidence, parental expectations, society's stereotypes, gender bias, school support - which can affect how young people behave.
"There are racial and class stereotypes and gender stereotypes that lead people to feel that this doesn't matter," Professor Davis said.
Sociologists Virginia Rutter and Pepper Schwartz consider Alvy and Annie's relationship to be a stereotype of gender differences in sexuality.
She believes it's because physical stereotypes interact with gender stereotypes.
These stereotypes correspond to gender stereotypes assigning women to positions of care, empathy and relationship, and men to more intellectual and leading skills.
They arrived poorly trained but determined, defying stereotypes and gender norms.
Jenkins said stereotypes around gender roles and structural problems that kept women from reaching top positions needed to be challenged.
There is still a tendency when discussing single-sex schools to deal in stereotypes and gender waffle.
This link has produced heavy stereotypes in gender role performance in every social group.
