Demand, Supply, Market
Equilibrium, and Welfare Analysis
IN THIS CHAPTER
Summary:A thorough understanding of the way in which the market system
determines price and quantity pays dividends both in microeconomics and
macroeconomics. In the absence of government intervention and/or externali-
ties, the competitive market also provides the most efficient outcome for
society.
Key Ideas
JDemand
JSupply
JEquilibrium
JConsumer and Producer Surplus
6.1 Demand
Main Topics: Law of Demand, Income and Substitution Effects, The Demand Curve, Determinants
of Demand
For many years now, you have understood the concept of demand. On the surface, the con-
cept is rather simple: people tend to purchase fewer items when the price is high than they
do when the price is low. This is such an intuitively appealing concept that your typical con-
sumer cares little about the rationale and still manages to live a happy life. As someone
knee-deep in reviewing to take the AP Microeconomics Exam, you need to go “behind the
KEY IDEA
CHAPTER