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EconomicsModule 4 of 8

Monetary Policy

6

Concepts

3

Formulas

1

Decisions

4

Quiz Questions

Key Concepts

6 concepts covered in this module.

Central Bank Roles

Lender of last resort, banker to government, monetary policy implementation, financial system regulation, payments system oversight.

Policy Rate

The short-term interest rate set by the central bank (e.g., Fed Funds rate). Primary tool of conventional monetary policy.

Transmission Mechanism

Policy rate → market rates → asset prices → exchange rates → expectations → aggregate demand → inflation/output.

Inflation Targeting

Most central banks target 2% inflation. Provides anchor for expectations. Transparency and credibility are key.

Quantitative Easing (QE)

Unconventional policy: central bank buys long-term assets to lower long-term rates when short-term rates are at zero (zero lower bound).

Central Bank Independence

Operational independence reduces political pressure and inflation bias. Goal independence varies by country.

Formulas

3 essential formulas for this module.

Fisher Equation

Nominal Rate ≈ Real Rate + Expected Inflation

Where: Approximate relationship

Quantity Theory of Money

MV = PY

Where: M = money supply, V = velocity, P = price level, Y = real output

Money Neutrality

ΔM → ΔP (long run)

Where: In long run, money supply changes only affect prices, not real output

Decision Frameworks

1 decision frameworks to guide your analysis.

Expansionary vs Contractionary Monetary Policy?

  • Expansionary (lower rates, QE): recession, deflation risk, output below potential
  • Contractionary (raise rates): inflation above target, overheating economy

Mind Map

Visual overview of how concepts connect in this module.

Monetary Policy
Tools
Policy rate
Open market operations
Reserve requirements
Quantitative easing
Transmission
Market rates
Asset prices
Exchange rates
Expectations
Aggregate demand
Objectives
Price stability (2% target)
Full employment
Financial stability
Exchange rate stability
Limitations
Zero lower bound
Liquidity trap
Long & variable lags
Asset price bubbles

Study Monetary Policy

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