Middle adulthood does not offer people opportunities for exercising creativity, expanding knowledge, and gaining intellectual experience.

The number and quality of sperm produced by a man declines beginning at about age ______.

A) 35
B) 40
C) 50
D) 65

Sigmund Freud based most of his theories on

A) laboratory experiments on human behavior.
B) his patients' own interpretations of their experiences.
C) his own interpretations of what his patients told him.
D) laboratory experiments on animal behavior.

In terms of ability to recognize others' facial expressions of emotion

A) introverts do better than extraverts and women do better than men.
B) introverts do worse than extraverts and women do better than men.
C) introverts do better than extraverts and women do worse than men.
D) introverts do worse than extraverts and women do worse than men.