Prenatal exposure to __________ is related to depression in children.

In the 1950s, George Miller estimated the capacity of short-term memory to be the magical number:

a. 5 plus or minus 4. b. 7 plus or minus 2. c. 9 plus or minus 3. d. 11 plus or minus 1.

Dr. Nebinger is discussing population trends and their changes with her students. "As you can see looking at these graphics," she says, "in _____ the population of the United States looked most like a pyramid."

a. 1950 b. 1980 c. 1990 d. 2010