10.12
Contractionary monetary policy means the central bank reduces the money supply to control inflation and slow down economic growth. This policy raises interest rates and reduces spending.
In the IS–LM model, this policy works directly through the money market. When the central bank reduces the money supply, it creates a shortage of liquidity in the money market. To restore balance between money supply and demand, the interest rate must rise, which is why this policy shifts the LM curve.
On the graph, this decrease in the money supply shifts the LM curve to the left, from LM₁ to LM₂. In the short run, the IS curve remains unchanged because the goods market takes longer to react to changes in the interest rate.
The new equilibrium moves from Point A to Point B, where the interest rate rises from r₁ to r₂ and income decreases from Y₁ to Y₂.
The higher interest rate discourages firms from borrowing and investing. This drop in investment spending lowers aggregate demand and output, demonstrating the contractionary impact of monetary policy within the IS–LM framework.
When inflation starts to rise, the central bank may act to slow down the economy. One common approach is to reduce the money supply. This is called co…
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