Book cover for The Economics of Money, Banking, and Financial Markets

The Economics of Money, Banking, and Financial Markets

Frederic S. Mishkin

ISBN #9780132770248

10th Edition

610 Questions

Group icon
33,211 Students Helped

Homework Questions

Right arrow
Summary
Learning Objectives
Key Concepts
Example Problems
Explanations
Common Mistakes

Summary

This chapter explains the Quantity Theory of Money, emphasizing the identity M * V = P * Y and its implications for the relationship between the money supply and price levels. In the long run, with constant velocity and output, an increase in the money supply results in a proportional increase in prices, while in the short run, factors such as interest rates and payment technologies influence money demand. The chapter also explores how government budget deficits financed by money creation can lead to inflation and, in extreme cases, hyperinflation.

Learning Objectives

1

Explain the Quantity Theory of Money and its identity, M * V = P * Y.

2

Analyze the long-run relationship between changes in the money supply and inflation.

3

Discuss the short-run factors affecting money demand, including interest rates and payment technologies.

4

Examine the role of government budget deficits and money creation in causing inflation and hyperinflation.

Key Concepts

CONCEPT

DEFINITION

Quantity Theory of Money

A theory that posits the nominal value of aggregate spending (P * Y) is determined by the money supply (M) and the velocity of money (V) through the identity M * V = P * Y.

Nominal Aggregate Spending (P * Y)

The total spending in the economy measured at current prices, where P is the price level and Y is real output.

Money Supply (M)

The total amount of monetary assets available in an economy at a specific time.

Velocity of Money (V)

The rate at which money circulates in the economy, indicating how frequently a unit of currency is used for transactions.

Liquidity Preference Theory

A theory proposed by Keynes that suggests the demand for money is determined by the preference for liquidity influenced by factors such as interest rates and payment technologies.

Hyperinflation

An extremely high and typically accelerating inflation rate, often resulting from uncontrolled money supply growth financed by government deficits.

Example Problems

Example 1

How would you expect velocity to typically behave over the business cycle?

Example 2

If velocity and aggregate output are reasonably constant (as the classical economists believed), what happens to the price level when the money supply increases from $\$ 1$ trillion to $\$ 4$ trillion?

Example 3

If credit cards were made illegal by congressional legislation, what would happen to velocity? Explain your answer.

Example 4

"If nominal GDP rises, velocity must rise." Is this statement true, false, or uncertain? Explain your answer.

Example 5

Why would a central bank be concerned about persistent, long-term budget deficits?

Scroll left
Scroll right

Step-by-Step Explanations

QUESTION

How does an increase in the money supply affect the price level in the long run according to the Quantity Theory of Money?

STEP-BY-STEP ANSWER:

Step 1: Start with the identity M * V = P * Y. Recognize that in the long run, both the velocity of money (V) and real output (Y) are relatively constant.
Step 2: With V and Y held constant, any change in the money supply (M) must result in a proportional change in the nominal aggregate spending (P * Y).
Step 3: Therefore, when M increases, P (the price level) must increase proportionally, leading to inflation.
Final Answer: In the long run, an increase in the money supply leads to a proportional increase in the price level.

Impact of Money Supply Increase on Price Levels (Long Run)

QUESTION

What factors affect the demand for money in the short run, and how do they interact with changes in the money supply?

STEP-BY-STEP ANSWER:

Step 1: Recognize that unlike the long-run assumption, in the short run, factors such as interest rates and payment technology changes influence the demand for money.
Step 2: According to Keynes’s liquidity preference theory, higher interest rates make holding money less attractive as it incurs an opportunity cost.
Step 3: Advances in payment technologies reduce the need for holding large sums of money for transactional purposes.
Step 4: Consequently, the short-run relationship between the money supply and price levels can deviate from the proportional relationship assumed in the Quantity Theory.
Final Answer: In the short run, factors like interest rates and technological changes affect money demand, which may result in non-proportional effects of money supply changes on price levels.

Short-Run Money Demand Factors

Scroll left
Scroll right

Common Mistakes

  • Confusing the long-run proportional effects of the money supply on price levels with short-run variations due to changing money demand.
  • Overlooking the role of velocity and assuming it is always constant, even in the short run.
  • Assuming that increases in the money supply will always lead directly to inflation without considering other economic factors like real output and liquidity preferences.
  • Underestimating the impact of government deficits on inflation when financed by money creation.