Data have shown that girls in the United States and other economically developed countries have been experiencing menarche at ________ ages than in past centuries

Americans who have a high school diploma or GED typically have annual incomes how much greater than those who do not graduate from high school?

a. 18% greater c. 74% greater b. 42% greater d. 91% greater

The best conclusion concerning age differences in pain sensitivity

a. pain sensitivity increases with age. b. pain sensitivity decreases with age. c. pain sensitivity is constant throughout life. d. pain sensitivity varies across body locations and with types of stimulation.