downward sloping accumulation demand curve
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The very first reason for the downward slope that the accumulation demand curve is Pigou"s riches effect. Recall that the nominal value of money is fixed, however the actual value is dependent upon the price level. This is because for a given amount the money, a reduced price level provides an ext purchasing strength per unit that currency. When the price level falls, consumers space wealthier, a condition which induces more consumer spending. Thus, a fall in the price level induces consumer to invest more, thereby enhancing the aggregate demand.
The second reason because that the downward slope that the aggregate demand curve is Keynes"s interest-rate effect. Recall that the amount of money inquiry is dependent ~ above the price level. The is, a high price level way that the takes a relatively large amount of money to make purchases. Thus, consumers demand large quantities of currency when the price level is high. As soon as the price level is low, consumers demand a relatively small quantity of currency due to the fact that it bring away a relatively small quantity of money to make purchases. Thus, consumers save larger quantities of money in the bank. Together the amount of money in banks increases, the it is provided of loan increases. As the it is provided of loans increases, the price of loans--that is, the attention rate--decreases. Thus, a low price level induces consumers to save, which in turn drives under the interest rate. A low interest rate increases the demand for invest as the price of investment drops with the interest rate. Thus, a autumn in the price level decreases the attention rate, which increases the need for investment and thereby increases aggregate demand.
The third reason for the bottom slope that the aggregate demand curve is Mundell-Fleming"s exchange-rate effect. Remind that together the price level falls the attention rate likewise tends to fall. As soon as the domestic interest price is low loved one to interest rates available in foreign countries, residential investors often tend to invest in foreign nations where return on investments is higher. As domestic money flows to foreign countries, the real exchange price decreases since the international supply that dollars increases. A to decrease in the actual exchange rate has the impact of raising net exports due to the fact that domestic goods and services are relatively cheaper. Finally, rise in net exports increases accumulation demand, as net exports is a component of accumulation demand. Thus, as the price level drops, interest rates fall, residential investment in foreign countries increases, the genuine exchange price depreciates, net exports increases, and aggregate demand increases.
IS-LM model of aggregate demand
There is another significant model the is valuable for explaining the nature the the accumulation demand curve. This model is referred to as the IS-LM version after the 2 curves that are involved in the model. The IS curve defines equilibrium in the industry for goods and also services wherein Y = C(Y - T) + I(r) + G and the LM curve describes equilibrium in the money sector where M/P = L(r,Y). The IS-LM version exists in a airplane with r, the interest rate, top top the upright axis and Y, being both income and also output, ~ above the horizontal axis. The IS-LM model has the same horizontal axis together the accumulation demand curve, however a various vertical axis.
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The IS curve describes equilibrium in the market for goods and services in regards to r and Y. The IS curve is bottom sloping because as the interest price falls, invest increases, for this reason increasing output. The LM curve explains equilibrium in the industry for money. The LM curve is upward sloping because higher income results in higher demand because that money, thus resulting in greater interest rates. The intersection that the IS curve v the LM curve reflects the equilibrium attention rate and price level.