The average income has ______ in the United States in the past 50 years

The sense of smell in humans is ______

a. much weaker than in most animals b. about the same as in most animals c. slightly more sensitive than in most animals d. much more sensitive than in most animals

According to Freud, someone who was frustrated during the oral stage would be likely to smoke or bite his or her fingernails. Freud would say that the individual was ____

a. neurotic b. fixated c. completely "normal" d. psychotic