When teased by his older sister,9-year-old Waldo does not cry because he has learned that boys are not supposed to cry. Waldo's behavior best illustrates the importance of

A) temperament.
B) gender roles.
C) testosterone.
D) collectivism.

Gender Roles

Socially constructed roles, behaviors, activities, and attributes that a given society considers appropriate for men and women.

Temperament

The combination of mental, physical, and emotional traits of a person; natural predisposition, which is often evident from infancy.

Testosterone

The most important of the male sex hormones. Both males and females have it, but the additional testosterone in males stimulates the growth of the male sex organs in the fetus and the development of the male sex characteristics during puberty.