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The aggregate demand curve illustrates the relationship between two factors: the quantity of output that is demanded and the aggregate price level. Aggregate demand is expressed contingent upon a fixed level of the nominal money supply.
The dynamic aggregate demand curve shifts when either fiscal policy or monetary policy is changed or any other kinds of shocks to aggregate demand occur. [5]: 411 Changes in the level of potential Y also shifts the AD curve, so that this type of shocks has an effect on both the supply and the demand side of the model. [5]: 412
A demand function states the relationship between the demand for a product and its various determinants. It is a shorthand way of saying that quantity demanded depends on various determinants. [7] It gives functional relationship (i.e., cause and effect relationship) between the demand for a commodity and various factors affecting demand.
Demand-led regimes use specific monetary and fiscal policy objectives to increase aggregate demand. All G20 countries are considered demand-led regimes. [6] Policymakers will identify specific factors that influence aggregate demand, and implement policies that will increase demand. This can occur in many ways, a common objective involves ...
Keynes interprets this as the demand for investment and denotes the sum of demands for consumption and investment as "aggregate demand", plotted as a separate curve. Aggregate demand must equal total income, so equilibrium income must be determined by the point where the aggregate demand curve crosses the 45° line. [63]
In Keynes's model, employment and output are driven by aggregate demand, the sum of consumption and investment. Since consumption remains stable, most fluctuations in aggregate demand stem from investment, which is driven by many factors including expectations, "animal spirits", and interest rates. [30]
The monetary transmission mechanism is the process by which asset prices and general economic conditions are affected as a result of monetary policy decisions. Such decisions are intended to influence the aggregate demand, interest rates, and amounts of money and credit to affect overall economic performance.
It is important to remember that factors that affect individual demand can also affect aggregate demand. However, net effects must be considered. The most important problem for micro- and macro-economics is the Sonnenschein–Mantel–Debreu theorem , which shows that almost no properties of the individual preference are inherited to the ...