ECO209Y5 Lecture Notes - Lecture 12: Nominal Rigidity, New Keynesian Economics, Demand For Money

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17 Feb 2016

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Lecture #12 - business cycles: new keynesian models and sticky prices. Price levels can be sticky due to things like wage contracts, etc. When prices are sticky, on the y graph, ys will not equal yd and there will be an excess of y. Suppose the central bank intervenes and decides to raise the money supply. Money is non-neutral and central bank can help stabilize the economy in the. Fall in r is a movement along the yd curve up. Fall in r and increase in y increase md. Keynes says that there are impediments in the wage and prices shifting instantly (i. e. menu costs, wage contracts, etc. ) Some markets may not clear which is inefficient. Typically, central banks target the r and adjust the ms accordingly to maintain this r. Banks lend to each other at the overnight rate. Banks can also borrow from the central bank at the bank rate. Commercial banks will choose whichever rate is lower.

Related Questions

As we observed in this chapter, central banks, rather than purposefully setting the level of the money supply, usually set a target level for a short-term interest rate by standing ready to lend or borrow whatever money people wish to hold at that interest rate. (When people need more money for a reason other than a change in the interest rate, the money supply therefore expands, and it contracts when they wish to hold less.)

A. Describe the problems that might arise if a central bank sets monetary policy by holding the market interest rate constant. (First, consider the flexible-price case, and ask yourself if you can find a unique equilibrium price level when the central bank simply gives people all the money they wish to hold at the pegged interest rate. Then consider the sticky-price case.)

B. Does the situation change if the central bank raises the interest rate when prices are high, according to a formula such as R - R₀= a(P - P₀), where a is a positive constant and P₀a target price level?

C.Suppose the central bankâs policy rule is R - R₀= a(P - P₀) + u, where u is a random movement in the policy interest rate. In the overshooting model shown in Figure 15-12, describe how the economy would adjust to a permanent one-time unexpected fall in the random factor u, and say why. You can interpret the fall in u as an interest rate cut by the central bank, and therefore as an expansionary monetary action.

All the questions from "Output, Exchange Rates, Macroeconomic Policy, and Open-economy IS-LM-FX Model."

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6. The TB (i.e., EX â IM) is part of the short-run spending equation. With sticky prices, what would be the effect on the TB with an increase (depreciation) of the home nation's exchange rate?

A. Consumers in the home nation would find it more expensive to buy domestic goods compared to foreign goods, and the trade balance would decrease.

B. Consumers in the home nation would cut back on both domestic and foreign goods and the trade balance would decrease.

C. Consumers in the home nation would increase spending on both domestic and foreign goods, and the trade balance would be unchanged.

D. Consumers in the home nation would increase spending on domestic goods and decrease spending on foreign goods, causing the trade balance to increase.

11. A shift to the left by the IS curve can be achieved by all of the following EXCEPT a(n):

A. decrease in government spending.

B. increase in taxes.

C. increase in the foreign interest rate.

D. decrease in future expected exchange rate Ee.

13. The LM curve will shift to the left, if there is a(n):

A. increase in money supply.

B. increase in interest rate.

C. decrease in money supply.

D. increase in output.

14. If taxes fall and foreign income falls, what will happen to output, ceteris paribus?

A. It will rise.

B. It will stay the same.

C. It will fall.

D. It is uncertain what will happen.

15. Using the IS-LM-FX framework, if we observe that income and interest rate both rise in the Eurozone, this could be the result of

A. contractionary monetary policy pursued by the European Central Bank.

B. expansionary monetary policy pursued by the Federal Reserve System (U.S. central bank).

C. a stock market crash in the Eurozone.

D. increases in government spending in the Eurozone.

18. Whenever U.S. government spending increases,

A. output will not change at all if the U.S. fixes the exchange rate of dollar against major currencies.

B. output will increase by a larger amount when dollar floats than when dollar pegs to other currencies.

C. output will increase by a smaller amount when dollar floats than when dollar pegs to other currencies.

D. output will not change at all since the U.S. adopts a flexible exchange rate.

1. According to the Solow model, an increase in the capital-labor ratio will a. always increase steady state consumption per worker b. reduce steady state consumption per worker if the capital-labor ratio is below the Golden rule capital stock c. always reduce steady state consumption per worker d. increase steady state consumption per worker if the capital-labor ratio is below the Golden rule capital stock

2. In a steady state a. capital and labor, by definition, are inversely related to one another b. both consumption per worker and the capital-labor ratio are constant c. consumption per worker can change, but the capital-labor ratio is constant d. consumption per worker is constant, but the capital-labor ratio can change

3. Which of the following changes would lead, according to the Solow model, to a higher level of long-run output per worker? a. An increase in the saving rate b. A lower level of capital per worker c. A decrease in productivity d. A rise in the rate of population growth

4. In the long run, a reduction in productivity will cause a. an increase in the capital-labor ratio and a decrease in consumption per worker b. a decrease in the capital-labor ratio and a decrease in consumption per worker c. a decrease in the capital-labor ratio and an increase in consumption per worker d. an increase in the capital-labor ratio and an increase in consumption per worker

5. An increase in the growth rate of population in a steady-state economy would cause a. a pivot down and to the right in the investment line b. a parallel shift downward in the investment line c. a pivot up and to the left in the investment line d. a parallel shift upward in the investment line 1 2

6. In the efficiency wage model, an increase in productivity would a. have no effect on either output or the real wage b. increase output but have no effect on the real wage c. decrease the real wage but have no effect on output d. increase output but decrease the real wage

7. Keynesian economists believe that in the short run, a. money neutrality does not exist and prices adjust rapidly b. money neutrality does not exist and prices do not adjust rapidly c. money neutrality exists and prices adjust rapidly d. money neutrality exists and prices do not adjust rapidly

8. If the expected inflation rate is unchanged, a fall in the natural rate of unemployment would a. not shift the Phillips curve b. shift the Phillips curve to the left c. shift the Phillips curve to the right d. shift the Phillips curve to the left and shift the long-run Phillips curve to the right

9. Classical economists believe that in the short run, a. money neutrality does not exist and prices adjust rapidly b. money neutrality does not exist and prices do not adjust rapidly c. money neutrality exists and prices do not adjust rapidly d. money neutrality exists and prices adjust rapidly

10. The fact that the long-run Phillips curve is vertical implies that a. money canât affect inflation in the long run b. money is neutral in the long run c. monetary policy canât affect unemployment d. there is a natural rate of inflation

1. Briefly explain the shape of the per-worker production curve in the Solow model. If investment per worker initially exceeds saving per worker, how is the steady state capital-labor ratio achieved?

2. Describe the effects of a rise in the domestic real interest rate on the exchange rate and on both domestic and foreign net exports.

3. For each of the following changes, what happens to the real interest rate and output in the short run, before the price level has adjusted to restore general equilibrium? a. Wealth declines b. Money supply declines c. The future marginal productivity of capital declines d. Expected inflation rises e. Future income rises

ECO209Y5 Lecture Notes - Lecture 12: Nominal Rigidity, New Keynesian Economics, Demand For Money

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