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Chapter 17 Money Growth and Inflation. Contents of the Chapter. Theoretical framework of inflation Money market & Money in long-run Velocity & quantity equation Why is inflation a problem?. The Classical Theory of Inflation.
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Contents of the Chapter • Theoretical framework of inflation • Money market & Money in long-run • Velocity & quantity equation • Why is inflation a problem?
The Classical Theory of Inflation • Increase of nominal price level (price tags) is not caused by increase in demand but simply caused by decease in the value of money.
What determines the value of money? • Supply and demand • Money Supply • Money Demand • How much cash people want to hold
Application • An expansionary monetary policy (MS increases) • Decrease of the value of money • Increase of price level (inflation)
The Classical Dichotomy and Monetary Neutrality • The classical dichotomy • Division of real and nominal variables in the economy • i.e. measured by money --- nominal measured by unit --- real (relative prices)
The classical (cont’d) • Nominal variables: influenced by monetary system • Real variables: influenced by supply and demand
Thus, changes of money supply will only affect nominal variables but not real variables: Monetary Neutrality. • Monetary Neutrality only exists in long-run not short-run.
Velocity and Quantity Equation • Another perspective to look at money neutrality • Money supply is not only determined by physical amount of money but also velocity V = (P*Y)/M
Quantity equation: M * V = P * Y • When you increase money supply: • Velocity the same -> increase price • Velocity the same -> quantity of output increases
In practice, we find that money velocity is stable. Thus, if Fed increases money supply (in the long-run): • Quantity of output is the same ( sine it is only determined by real factors (not nominal factors, like money). • Only price will rise. • Faster money supply growth is, higher inflation we have
Case study: What is the real cause of Hyperinflation • Government print too much money • Inflation tax
Case study: Fisher Effect • Nominal and real interest rates in long-run • MS increases • Real interest rate stay put • Increases of MS are transferred to increases of nominal interest rate. • Why is it important? • Business contract. (inflation)
Cost of Inflation • Inflation does not reduce people’s real purchasing power.
Then, why inflation is bad for us? • Shoeleather costs • Menu costs • Relative Price Variability and the Misallocation of Resources • Tax • Unexpected Inflation: Arbitrary Redistributions of Wealth • Inconvenience