_____ refers to a lack of menstruation in girls who have reached puberty.

_____ refers to a self-centered and self-concerned approach toward others.

Identity encompasses an individual’s personality characteristics.

According to evolutionary psychologists, natural selection favored females who chose multiple partners to have many children.

According to evolutionary psychologists, natural selection favored females who chose multiple partners to have many children.

Identity encompasses an individual’s personality characteristics.

The abstract quality of thinking during the concrete stage is evident in the adolescent’s verbal problem-solving ability.

Gender _____ involves a sense of one’s own gender, including knowledge, understanding, and acceptance of being male or female.

What is the difference between cliques and crowds?

As opposed to the trend in young children, teenagers typically prefer to have a large group of friends, some of whom are especially intimate.