Sex Differences, and the War Between Nature and Nurture

“Girls and boys are as different from the neck up as they are from the neck down,” says psychologist and author JoAnn Deak.

Girls tend to develop and process language, language fluency, and verbal memory earlier than boys do. From birth, boys are more aggressive, competitive, and self-assertive than girls. Oksana Kuzmina/Shutterstock and (India Picture/Shutterstock

“Girls and boys are as different from the neck up as they are from the neck down.”

- Psychologist and author JoAnn Deak, in her speech“Taking the Mean Out of Teen“