One sex difference that appears very early in American children, as well as in children in all societies for which systematic data is available, is greater __________.

Question

Quizplus · Accepted Answer

The correct answer is aggressiveness in boys. Studies have consistently shown that boys tend to engage in more physical aggression than girls, and this difference appears early in childhood and is seen across cultures. Sociability, responsibility or aggressiveness in girls are not consistent sex differences found in all societies.

One Sex Difference That Appears Very Early in American Children