In a society where government mandates that everyone shares the product of one's hard work with everyone else, people will tend to work harder than they would if they could keep the full product of their work

Coffee prices fell in the 1990s because of:

a. subsidies by developed countries to their coffee producers. b. subsidies by developing countries to their coffee producers. c. new suppliers in Brazil and Vietnam. d. a fall in world demand for coffee.

For which of the following products is social influence likely to have the greatest impact?

A) school textbook B) restaurants C) high-blood pressure medication D) toothpaste