10.2 Links Between Macroeconomic Problems and Their Interrelatedness

10.2 Links Between Macroeconomic Problems and Their Interrelatedness

10.2.1 Relationship Between Internal and External Value of Money

• The internal value of money refers to its purchasing power within the domestic economy—how much goods and services can be bought using a unit of currency.

• The external value of money refers to its value relative to foreign currencies, usually expressed via the exchange rate.

• Inflation reduces the internal value of money. As domestic prices rise, money buys fewer goods and services.

• A falling internal value due to inflation often weakens the external value of the currency. Investors and traders lose confidence, leading to currency depreciation.

• This depreciation raises the price of imports, which can further fuel inflation, creating a vicious cycle known as imported inflation.

• Governments and central banks often struggle to balance both internal and external value, especially in open economies.

10.2.2 Relationship Between Balance of Payments and Inflation

• The balance of payments (BoP) records all financial transactions made between consumers, businesses, and the government in one country with others.

• Inflation makes domestic goods more expensive, reducing their competitiveness in global markets.

• As a result, exports decline and imports increase, leading to a deficit in the current account of the BoP.

• Additionally, inflation increases the demand for foreign currency to pay for imports, causing exchange rate depreciation.

• This further worsens the balance of payments and may require intervention such as interest rate hikes, which can hurt domestic growth and employment.

• Therefore, maintaining price stability is essential for external trade balance.

10.2.3 Relationship Between Growth and Inflation

• Economic growth refers to an increase in the production of goods and services over time, usually measured by GDP.

• Demand-pull inflation can arise during high growth periods when aggregate demand exceeds aggregate supply.

• Cost-push inflation can also accompany growth if higher wages, raw material costs, or imported inflation drive up production costs.

• If the growth is supply-side driven—through productivity improvements, technological advancement, and efficient resource use—it may not be inflationary.

• Policymakers need to ensure sustainable growth, balancing between boosting output and avoiding overheating of the economy.

10.2.4 Relationship Between Growth and Balance of Payments

• When an economy grows, consumer income rises, leading to increased demand for both domestic and imported goods.

• This results in a surge in imports, which can worsen the current account of the balance of payments.

• Export-led growth (e.g. in countries like China or Germany) can improve the BoP by earning more foreign exchange through trade surpluses.

• However, if a country’s growth is heavily reliant on foreign debt or imported capital goods, it may worsen the capital account.

• Sustained economic growth must therefore be aligned with external sector strength to avoid persistent trade imbalances and currency crises.

10.2.5 Relationship Between Inflation and Unemployment

➤ Traditional Phillips Curve:

• The Phillips Curve illustrates an inverse relationship between inflation and unemployment.

• As unemployment falls, inflation tends to rise due to increased demand for labor, leading to wage rises and cost-push inflation.

• The curve suggests policymakers can trade-off between lower unemployment and higher inflation in the short run.

➤ Expectations-Augmented Phillips Curve:

• Developed by Milton Friedman and Edmund Phelps, this model incorporates inflation expectations.

• In the short run, expansionary policies may reduce unemployment below its natural rate, but only temporarily.

• As people adjust their expectations (e.g. workers demand higher wages), the short-run Phillips Curve shifts right, leading to stagflation—high inflation and high unemployment.

➤ Long-Run Phillips Curve (LRPC):

• In the long run, the curve becomes vertical at the natural rate of unemployment (or NAIRU).

• It suggests no trade-off between inflation and unemployment in the long run.

• Attempting to reduce unemployment below the natural rate only leads to accelerating inflation, without any lasting employment gains.

Conclusion:

• Macroeconomic issues are highly interrelated.

• A policy targeting one objective (e.g., growth) may exacerbate another (e.g., inflation or BoP deficits).

• A balanced macroeconomic strategy involves managing inflation, unemployment, growth, and external stability together.
  
  

• Understanding these linkages is crucial for effective policy design and coordination in any economy.