Core Economic Definitions & Theoretical Mechanisms
Monetarism, championed by Milton Friedman, argues that variations in the money supply have major influences on national output in the short run and price levels over longer periods. It heavily relies on the Quantity Theory of Money. Friedman advocated for the K-Percent rule: expanding the money supply at a steady, fixed rate rather than using discretionary policy.
Underlying Mathematical Formulas & Equations
Equation of Exchange: M * V = P * Y. (Money Supply * Velocity = Price Level * Real Output).
Concrete Worked Numerical Example
Assume real GDP (Y) grows at 3% per year and Velocity (V) is constant. To maintain a stable price level (P), the central bank should increase the money supply (M) by exactly 3% per year. If M grows by 8%, inflation (P) will roughly be 5%.
Real-World Empirical Application: Historical Case Study
The Volcker Shock in the early 1980s. Facing double-digit inflation, Federal Reserve Chair Paul Volcker adopted monetarist policies, targeting the growth of the money supply rather than interest rates, successfully crushing inflation but causing a severe recession.
Limitations, Criticisms, and Competing Schools of Thought
Keynesians argue velocity (V) is not constant, rendering the equation unstable. Furthermore, the deregulation of financial markets in the 1980s blurred the definition of ‘money’ (M), making it extremely difficult for central banks to control it directly.
Comprehensive FAQ Section
What is Friedman’s K-Percent Rule?
A proposal that the central bank should increase the money supply by a fixed percentage every year, regardless of economic conditions, to avoid policy errors.
Academic References & Primary Source Citations
- Friedman, M., & Schwartz, A. J. (1963). A Monetary History of the United States.
- Friedman, M. (1968). The Role of Monetary Policy. American Economic Review.