WHAT THE
IS
CURVE TELLS US
The
IS
curve traces out the points at which the total
quantity of goods produced equals the total quantity of goods demanded. It describes
points at which the goods market is in equilibrium. For each given level of the inter-
est rate, the
IS
curve tells us what aggregate output must be for the goods market to
be in equilibrium. As the interest rate rises, planned investment spending and net
exports fall, which in turn lowers aggregate demand; aggregate output must be lower
in order for it to equal aggregate demand and satisfy goods market equilibrium.
The
IS
curve is a useful concept because output tends to move toward points
on the curve that satisfy goods market equilibrium. If the economy is located in
Y
ad
1
C H A P T E R 2 2
The
ISLM
Model
589
Do'stlaringiz bilan baham: |