Case Econ08 Ppt 18
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© 2007 Prentice Hall Business Publishing Principles of Economics 8e by Case and Fair
Prepared by:
Fernando & Yvonn Quijano
18Chapter
PART IV CONCEPTS AND PROBLEMS IN MACROECONOMICS
Introductionto Macroeconomics
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Chapter Outline
18Introductionto Macroeconomics
PART II CONCEPTS AND PROBLEMS IN MACROECONOMICS
The Roots of MacroeconomicsThe Great DepressionRecent Macroeconomic HistoryMacroeconomic ConcernsInflation and DeflationOutput Growth: Short Run and Long RunUnemploymentGovernment In the MacroeconomyFiscal PolicyMonetary PolicyGrowth PoliciesThe Components of the MacroeconomyThe Circular Flow DiagramThe Three Market ArenasThe Methodology of MacroeconomicsConnections to MicroeconomicsAggregate Demand and Aggregate SupplyThe U.S. Economy Since 1900:Trends and CyclesExpansion and Contraction: The Business CycleThe U.S. Economy Since 1970
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INTRODUCTION TO MACROECONOMICS
microeconomics Examines the functioning of individual industries and the behavior of individual decision-making units—business firms and households.
macroeconomics Deals with the economy as a whole. Macroeconomics focuses on the determinants of total national income, deals with aggregatessuch as aggregate consumption and investment, and looks at the overall level of prices instead of individual prices.
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INTRODUCTION TO MACROECONOMICS
aggregate behavior The behavior of all households and firms together.
sticky prices Prices that do not always adjust rapidly to maintain equality between quantity supplied and quantitydemanded.
microeconomic foundations ofmacroeconomics The microeconomic principles underlying macroeconomicanalysis.
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THE ROOTS OF MACROECONOMICS
Great Depression The period of severe economic contraction and high unemployment that began in 1929 and continued throughout the 1930s.
THE GREAT DEPRESSION
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THE ROOTS OF MACROECONOMICS
Classical Models
Classical economists applied microeconomic models, or “market clearing” models, to economy-wide problems.
Simple classical models failed to explain the prolonged existence of high unemployment during the Great Depression. This provided the impetus for the development of macroeconomics.
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THE ROOTS OF MACROECONOMICS
The Keynesian Revolution
In 1936, John Maynard Keynes published The General Theory of Employment, Interest, and Money.
Much of macroeconomics has roots in Keynes’s work. According to Keynes, it is not prices and wages that determine the level of employment, as classical models had suggested, but instead the level of aggregate demand for goods and services.
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THE ROOTS OF MACROECONOMICS
Fine-Tuning in the 1960s
RECENT MACROECONOMIC HISTORY
fine-tuning The phrase used by Walter Heller to refer to the government’s role in regulating inflation and unemployment.
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THE ROOTS OF MACROECONOMICS
Disillusionment in the 1970s and Early 1980s
stagflation Occurs when the overall price level rises rapidly (inflation) during periods of recession or high and persistent unemployment (stagnation).
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THE ROOTS OF MACROECONOMICS
Good Times in the 1990s, Pause in 2000–2001, and Recovery in 2002–2005
The strong economy in the 1990s and recovery in 2002–2005 did not lead to a convergenceof views of macroeconomists about how the macroeconomy works. The discipline ofmacroeconomics is still in flux, and many important issues have yet to be resolved.
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MACROECONOMIC CONCERNS
Three of the major concerns of macroeconomics are:
■ Inflation
■ Output growth
■ Unemployment
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MACROECONOMIC CONCERNS
INFLATION AND DEFLATION
inflation An increase in the overall price level.
hyperinflation A period of very rapid increases in the overall price level.
deflation A decrease in the overall price level.
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MACROECONOMIC CONCERNS
OUTPUT GROWTH: SHORT RUN AND LONG RUN
business cycle The cycle of short-term ups and downs in the economy.
aggregate output The total quantity of goods and services produced in an economy in a given period.
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MACROECONOMIC CONCERNS
depression A prolonged and deep recession.
recession A period during which aggregate output declines. Conventionally, a period in which aggregate output declines for twoconsecutive quarters.
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MACROECONOMIC CONCERNS
unemployment rate The percentage of the labor force that is unemployed.
UNEMPLOYMENT
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GOVERNMENT IN THE MACROECONOMY
There are three kinds of policy that the government has used to influence the macroeconomy:
1. Fiscal policy
2. Monetary policy
3. Growth or supply-side policies
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GOVERNMENT IN THE MACROECONOMY
fiscal policy Government policies concerning taxes and expenditures (spending).
FISCAL POLICY
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GOVERNMENT IN THE MACROECONOMY
monetary policy The tools used by the Federal Reserve to control the quantity of money in the economy.
MONETARY POLICY
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GOVERNMENT IN THE MACROECONOMY
supply-side policies Government policies that focus on stimulating aggregate supply instead of aggregate demand.
GROWTH POLICIES
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THE COMPONENTS OF THE MACROECONOMY
Macroeconomics focuses on four groups:
(1) households and(2) firms, which together compose the
private sector,(3) the government (the public sector),
and(4) the rest of the world (the international
sector).
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THE COMPONENTS OF THE MACROECONOMY
circular flow A diagram showing the income received and payments made by each sector of the economy.
THE CIRCULAR FLOW DIAGRAM
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THE COMPONENTS OF THE MACROECONOMY
FIGURE 5.1 The Circular Flow of Payments
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THE COMPONENTS OF THE MACROECONOMY
transfer payments Cash payments made by the government to people who do not supply goods, services, or laborin exchange for these payments. They include Social Security benefits, veterans’ benefits, and welfare payments.
Everyone’s expenditures go somewhere. It is impossible to sell something without therebeing a buyer, and it is impossible to make a payment without there being a recipient.Every transaction must have two sides.
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THE COMPONENTS OF THE MACROECONOMY
THE THREE MARKET ARENAS
Another way of looking at the ways households, firms, the government, and the rest of the world relate to each other is to consider the markets in which they interact.
The three market arenas are:
1. Goods-and-services market2. Labor market3. Money (financial) market
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THE COMPONENTS OF THE MACROECONOMY
Goods-and-Services Market
Firms supply to the goods-and-services market. Households, the government, and firms demand from this market.
Labor Market
In this market, households supply labor, and firms and the government demand labor.
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THE COMPONENTS OF THE MACROECONOMY
Money Market
Households supply funds to this market in the expectation of earning income, and also demand (borrow) funds from this market.
Firms, government, and the rest of the world also engage in borrowing and lending, coordinated by financial institutions.
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THE COMPONENTS OF THE MACROECONOMY
Treasury bonds, notes, and bills Promissory notes issued by the federal government when it borrows money.
corporate bonds Promissory notes issued by corporations when they borrow money.
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THE COMPONENTS OF THE MACROECONOMY
shares of stock Financial instruments that give to the holder a share in the firm’s ownership and therefore the rightto share in the firm’s profits.
dividends The portion of acorporation’s profits that the firm pays out each period to its shareholders.
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THE METHODOLOGY OF MACROECONOMICS
CONNECTIONS TO MICROECONOMICS
Macroeconomic behavior is the sum of all the microeconomic decisions made by individual households and firms. If the movements of macroeconomic aggregates, such as total output or total employment, reflect decisions made by individual firms and households, we cannot understand the former without some knowledge of the factors that influence the latter.
The reason for looking to microeconomics for help in explaining macroeconomic events is simple:
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THE METHODOLOGY OF MACROECONOMICS
AGGREGATE DEMAND AND AGGREGATE SUPPLY
aggregate demand The total demand for goods and services in an economy.
aggregate supply The total supply of goods and services in an economy.
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THE METHODOLOGY OF MACROECONOMICS
FIGURE 5.2 The Aggregate Demand and Aggregate Supply Curves
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THE U.S. ECONOMY SINCE 1900:TRENDS AND CYCLES
FIGURE 5.3 A Typical Business Cycle
EXPANSION AND CONTRACTION: THE BUSINESS CYCLE
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THE U.S. ECONOMY SINCE 1900:TRENDS AND CYCLES
expansion or boom The period in the business cycle from a trough up to a peak, during which output and employment rise.
contraction, recession, or slump The period in the business cycle from a peak down to a trough, during which output and employment fall.
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THE U.S. ECONOMY SINCE 1900:TRENDS AND CYCLES
FIGURE 5.4 Real GDP, 1900–2004
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THE U.S. ECONOMY SINCE 1900:TRENDS AND CYCLES
FIGURE 5.5 Real GDP, 1970 I–2005 II
THE U.S. ECONOMY SINCE 1970
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THE U.S. ECONOMY SINCE 1900:TRENDS AND CYCLES
FIGURE 5.6 Unemployment Rate, 1970 I–2005 II
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THE U.S. ECONOMY SINCE 1900:TRENDS AND CYCLES
FIGURE 5.7 Percentage Change in the GDP Deflator (Four-Quarter Average), 1970 I–2005 II
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aggregate behavioraggregate demandaggregate outputaggregate supplybusiness cyclecircular flowcontraction, recession, or
slumpcorporate bondsdeflationdepressiondividendsexpansion or boomfine-tuningfiscal policyGreat Depression
hyperinflationinflationmacroeconomicsmicroeconomic foundations
of macroeconomicsmicroeconomicsmonetary policyrecessionshares of stockstagflationsticky pricessupply-side policiestransfer paymentsTreasury bonds, notes, billsunemployment rate
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