Aggregate Demand Curve
The AD curve is defined by the IS-LM equilibrium income at different potential price levels. The Aggregate demand curve AD, which is downward sloping, is derived from the IS – LM model.
It shows the combinations of the price level and level of the output at which the goods and assets markets are simultaneously in equilibrium. The above figure showing IS and LM curves, where LM curve shifts downward to the right to LM’ and thus shifting the new equilibrium to E’ where both goods and money market gets cleared. Now, the new output level Y’ correspond to the lower price level P’. Thus a reduction in price, which is shown in the figure, leads to an increase in the equilibrium and spending.
The equation for the AD curve in general terms is:
where Y is real GDP, M is the nominal money supply, P is the price level, G is real government spending, T is an exogenous component of real taxes levied, and Z1 is a vector of other exogenous variables that affect the location of the IS curve (exogenous influences on any component of spending) or the LM curve (exogenous influences on money demand). The real money supply has a positive effect on aggregate demand, as does real government spending (meaning that when the independent variable changes in one direction, aggregate demand changes in the same direction); the exogenous component of taxes has a negative effect on it.
Read more about this topic: AD-AS Model
Famous quotes containing the words aggregate, demand and/or curve:
“We cannot think of a legitimate argument why ... whites and blacks need be affected by the knowledge that an aggregate difference in measured intelligence is genetic instead of environmental.... Given a chance, each clan ... will encounter the world with confidence in its own worth and, most importantly, will be unconcerned about comparing its accomplishments line-by-line with those of any other clan. This is wise ethnocentricism.”
—Richard Herrnstein (1930–1994)
“The demand for equal rights in every vocation of life is just and fair; but, after all, the most vital right is the right to love and be loved.”
—Emma Goldman (1869–1940)
“In philosophical inquiry, the human spirit, imitating the movement of the stars, must follow a curve which brings it back to its point of departure. To conclude is to close a circle.”
—Charles Baudelaire (1821–1867)