Why do women opt out? Sense of belonging and women's representation in mathematics.

Sense of belonging to math-one's feelings of membership and acceptance in the math domain-was established as a new and an important factor in the representation gap between males and females in math. First, a new scale of sense of belonging to math was created and validated, and was found to predict unique variance in college students' intent to pursue math in the future (Studies 1-2). Second, in a longitudinal study of calculus students (Study 3), students' perceptions of 2 factors in their math environment-the message that math ability is a fixed trait and the stereotype that women have less of this ability than men-worked together to erode women's, but not men's, sense of belonging in math. Their lowered…