Newborns can do math: They can tell the difference between two and three objects

The __________ theory states that workers decide how satisfied they feel with their jobs by comparing themselves to others

a. relativistic b. equity c. expectancy d. incentive

Which group of women may experience lower effectiveness rates with hormonal methods of birth control?

a. Women ages 15-19 b. Women over 35 c. Women who are significantly overweight d. Women who exercise too much