Interest Rate Determination by Liquidity Preference Quiz

In the Keynesian framework, the equilibrium interest rate is found where money demand equals money supply. The money supply is set by the central bank, while money demand depends on the interest rate. The interest rate adjusts until the two are equal, bringing the money market into balance.

The answer is False. Keynes argued that the interest rate is determined in the money market, specifically through the interaction of liquidity preference (money demand) and the money supply. This was a departure from the classical view that the interest rate is determined by saving and investment in the goods market.

When money demand exceeds money supply, individuals try to increase their money holdings by selling bonds. This increased bond selling drives bond prices down, which in turn pushes interest rates up. The rising interest rate continues until the demand for money falls to match the fixed money supply, restoring equilibrium in the money market.

An increase in liquidity preference means people want to hold more money at every interest rate level. With the money supply held constant, excess demand for money leads people to sell bonds, driving bond prices down and interest rates up. The interest rate rises until the money market returns to equilibrium.

The answer is True. In the basic Keynesian framework, the central bank controls the money supply and sets it at a fixed level, making the money supply curve vertical. This means the money supply does not change in response to interest rate movements. The interest rate is then determined by where money demand intersects this fixed money supply.

Bond markets are closely linked to interest rate determination in Keynesian theory. When people buy more bonds, bond prices rise and interest rates fall. When people sell bonds to acquire more money, bond prices fall and interest rates rise. The inverse relationship between bond prices and interest rates makes bond market behavior central to how interest rates adjust.

Keynesian interest rate determination is rooted in the money market. The equilibrium rate is where money demand equals money supply. The central bank has the ability to influence this equilibrium by adjusting the money supply. The interest rate itself is the adjusting variable that brings the market into balance. The productivity of capital is a classical, not Keynesian, explanation of interest rates.

When the central bank increases the money supply, money supply exceeds money demand at the existing interest rate. People use the extra money to buy bonds, raising bond prices and lowering interest rates. The interest rate continues to fall until money demand rises to match the new higher money supply, restoring equilibrium.

The answer is False. A decrease in money supply creates a shortage of money at the existing interest rate. People respond by selling bonds to obtain money, which drives bond prices down and interest rates up. Therefore, a decrease in the money supply leads to a rise in the equilibrium interest rate, not a decrease.

Money market equilibrium in Keynesian theory refers to the condition where the total amount of money people want to hold exactly equals the total amount of money in circulation. At this point, there is no pressure for the interest rate to change. Any deviation from this balance prompts adjustments in bond prices and interest rates until equilibrium is restored.

The bond market is the mechanism through which interest rates adjust in Keynesian analysis. When there is excess money demand, people sell bonds, lowering bond prices and raising interest rates. When there is excess money supply, people buy bonds, raising bond prices and lowering interest rates. These bond transactions are the direct channel through which the interest rate returns to equilibrium.

The answer is False. If money demand decreases with no change in the money supply, there is excess money in the economy. People use the surplus money to purchase bonds, which raises bond prices and lowers interest rates. Therefore, a fall in money demand leads to a lower equilibrium interest rate, not a higher one.

Keynes argued that the interest rate is a monetary phenomenon, determined by the supply and demand for money. The classical loanable funds theory viewed the interest rate as a real phenomenon, balancing saving and investment in the goods market. This fundamental difference reflects contrasting views on what drives interest rates in a modern economy.

An increase in liquidity preference shifts the money demand curve to the right. With money supply unchanged, excess money demand causes people to sell bonds to raise cash. Selling bonds drives bond prices down and pushes interest rates up until the money market reaches a new equilibrium at a higher interest rate. The central bank is not automatically forced to expand the money supply.

In a liquidity trap, interest rates are so low that people expect them to rise in the future, anticipating capital losses on bonds. As a result, any additional money injected by the central bank is simply held rather than used to buy bonds. This prevents the money supply increase from lowering interest rates further, making monetary policy ineffective.