Chapter 22: Short Term Trade-off Between Inflation and Unemployment

  • Introduction to Chapter 22

    • Focus on the trade-off between inflation and unemployment
    • Discussion on short-term and long-term relationships
    • Key learning points:
    • Relationship between inflation and unemployment
    • Factors that influence this relationship

  • Short-term Relationship

    • Inverse relationship in the short run
    • Long-term lack of relationship between inflation and unemployment

  • Historical Background

    • A.W. Phillips (1958): Showed nominal wage growth is negatively correlated with unemployment
    • Samuelson and Solow (1962): Established the negative relationship between inflation and unemployment, termed the "Phillips Curve"

  • Mechanics of the Trade-off

    • Aggregate demand can be influenced by the government and central bank
    • Components of aggregate demand:
    • Consumption demand
    • Investment demand
    • Government spending
    • Net exports
    • Expansionary Fiscal Policy:
    • Increasing government spending (G)
    • Decreasing taxes
    • Results:
      • Increased aggregate demand
      • Increased GDP and lower unemployment rates
      • Higher inflation due to increased demand

  • Trade-off Mechanism Examples

    • Expanding aggregate demand via fiscal policy leads to:
    • Increased GDP
    • Lower unemployment at the cost of higher inflation

  • Monetary Policy Influence

    • Expansionary Monetary Policy:
    • Increases economic activity
    • Example: Open market purchases of government bonds
    • Results:
      • Increased bond demand raises prices of bonds
      • Decreased interest rates boosts consumption and investment
      • Increased aggregate demand, higher GDP, and lower unemployment

  • Diagrams and Economic Models

    • Visual representation of the Phillips Curve:
    • Inverse relationship indicated in diagrams
    • Example data points:
    • Price level and corresponding unemployment rates showing trade-off

  • Long-term Considerations

    • Long-term aggregate supply curve behaves differently:
    • Becomes vertical if all production factors are utilized
    • Expansionary policies do not affect unemployment in the long run
    • Resulting Phillips curve is vertical, indicating no trade-off in the long run

  • Conclusion: Policy Implications

    • Government and central bank face challenges in managing inflation and unemployment
    • Lower unemployment often leads to higher inflation in the short run
    • Long-term goals require different strategies as the trade-off does not hold.