In a study titled “Four-Year-Olds’ Beliefs About How Others Regard Males and Females,” researcher May Ling Halim observed how television viewing and interactions of parents within a household may affect a child’s perception on gender. She had about 250 four-year-olds interviewed and she asked them questions about their parents, the opposite gender, how much TV they watched and about their feelings on their own gender. The study used four-year-olds because at age four, children are able to make distinctions concerning gender and concerning how two people may view the same thing in different ways.