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ECON 1 Lecture Notes - Lecture 29: Demand Shock, Nominal Rigidity, Aggregate Supply

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School
ELAC
Department
Economics
Course
ECON 1
Professor
Coson

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Document Summary

Expectations- the anticipations of consumers, firms, and others about future economic conditions. Expectations have a large effect on economic growth since increased pessimism will lead to less current investment and, subsequently, less future consumption. Expectations can become unmet due to shocks. Shocks- situations in which one thing is expected to occur but in reality something different occurs. Decisions are necessitated by the shock and surprise of having to deal with an unexpected situation. Demand shocks sudden, unexpected changes in demand for goods and services. Supply shocks sudden, unexpected changes in aggregate supply of goods and services. Economists believe that most short-run fluctuations are the result of demand shocks. Full employment if there are no shocks. In reality, many prices of many goods and services in the economy are inflexible (slow to change, or sticky) and do not change rapidly when demand changes unexpectedly.

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Related Questions

Dalum Papir A/S is almost halfway through its second century as a Danish paper manufacturer. Years ago, the firm was one of many paper companies, but now it constitutes one- half of Denmark's two-firm paper industry. The company utilizes highly energy-efficient techniques to manufacture glossy paper from recycled materials for magazines. Dalum Papir has had little choice but to conserve energy. Government taxation has boosted energy prices more than 45 percent above the U.S. level. Also, like other Danish firms, Dalum Papir must meet government-mandated standards for energy conservation.

Ever since the 1970s, when a worldwide spike in oil prices set off a prolonged recession, Denmark's government has sought to shield the nation's economy from future aggregate supply shocks induced by jumps in energy prices. Toward that end, it has enacted high energy taxes and tough regulatory conservation measures. A consequence is that Danish oil consumption per $1 million of real GDP has declined by more than 30 percent - to 120 tons o oil per $1 million of real GDP - over the last 30 years. Indeed, Denmark's total oil consumption has remained unchanged since the late 1970s. Thus, consistent with the government's intent, whenever oil prices suddenly shoot up, Denmark's economy tends to experience smaller aggregate supply shocks than it did in years past.

As the experience of Dalum Papir and the dwindling Danish paper, industry illustrates, however, the government's quest for aggregate supply stability has come at the cost of growth in the production of goods and services. Since the late 1970s, Denmark's real GDP has doubled, whereas U.S. real GDP has quadrupled. During that period, total U.S. oil consumption has increased by more than 40 percent, yet because U.S. real GDP has increased fourfold, U.S. oil consumption per $1 million of real GDP has fallen by more than 25 percent - almost as much as the percentage decline in Danish oil consumption per $1 million in real GDP. Thus, although the Danish economy is less susceptible than the U.S. economy to aggregate supply shocks, Denmark's aggregate supply is growing at about half the pace at which the U.S. aggregate supply is expanding.

1. Why do unexpected variations in energy prices generate aggregate supply shocks, which sudden changes in total planned expenditures do not?

2. Other things being equal, why might we expect the Danish price level to be more stable over time than the U.S. price level?

MACROECONOMICS

1. Which one of the following is not a determinant of aggregate demand?

a. Investment expenditure

b. Technology

c. Consumption expenditure

d. Net exports

2. An improvement in technology will?

a. Decrease aggregate demand

b. Increase aggregate demand

c. Increase aggregate supply

d. Decrease aggregate supply

3. Oil price changes in the mid 80's are an example of?

a. An exiernal supply shock increasing prices and reducing real income

b. An external supply shock decreasing prices and raising real income

c. An external supply shock increasing prices and reducing real in come

d. An external demand shock inceasing prices and reducing real in come

4. The oil shock in 1979-80 was an example of?

a. An external supply shock decreasing prices and increasing real income

b. An external supply shock increasing prices and decreasing real income

c. An external demand shock decreasing prices and real income

d. An external demand shock increasing prices and real income

5. Which one of the following does not cause the aggregate demand curve to slop downward?

a. Changes in relative prices between foreign and domestic goods

b. Wealth effect

c. Changes in real output

d. Changes in interest rate

6.Which one of the following is not determinant of aggregate supply?

a. Productivity

b. Disposal income

c. Capacity and investment plan

d. Cost and availability of resources

7. Which of the following relationship is correct?

a. Equilibrium employment and full employment may not be the same

b. Equilibrium employment and full employment are not related

c. Equilibrium employment and full employment are always the same

d. Equilibrium employment and full employment are never the same

8. Which of the following was not a factor limiting the severity of effects of the oil sopply shock of 1979-80?

a. Increase in use of alternative sources of energy

b. More efficient use of energy

c. Increased supplies of non-OPEC oil

d. More rapid worldwide economic growth

9. Which one of following does not cause the aggregate demand curve to slop downward?

a. Changes in relative prices between foreign and domestic goods

b. Interest rate changes

c. Wealth effect

d. Chnages in real output

10. With aggregate demand shocks?

a. teh aggregte supply curve moves up the aggregate demand curve and increases price and reduces real income

b. the aggregate demand curves moves up the aggregate supply curve and increases prices and real income

c. the aggregate demand curves moves down the aggregate supply curve and increases both prices and real income

d. the aggregate supply curve moves down the aggregate demand curve and reduces prices and increases in real income

1. Business cycles involve fluctuations around full employment real GDP. List and explain at least three of the possible causes. Demand for goods and services is more or less than the firm.

2. If the Great Recession bottomed in 2009, about when would you guess that the next recession would occur?

3. What are the leading economic indicators that might signal the onset of the next recession?

4. Is supply-side economic activity more important than demand-side economic activity when it comes to predicting changes in the direction of the economy?