Explanation: Start at any point on the initial IS* curve. At this point, initially, Y = C + I + G + NX. Now cut taxes. At the initial value of Y, disposable income is higher, causing consumption to be higher. Other things equal, the goods market is out of whack: C + I + G + NX > Y. An increase in Y (of just the right amount) would restore equilibrium. Hence, each value of e is associated with a larger value of Y. OR, a decrease in NX of just the right amount would restore equilibrium at the initial value of Y. But the decrease in NX requires an increase in e. Hence, each value of Y is associated with a higher value of e.
Rationale: Doing this exercise now will break up your lecture, and will prepare students for the fiscal policy experiment that is coming up in just a few slides.
Explanation: Start at any point on the initial IS* curve. At this point, initially, Y = C + I + G + NX. Now cut taxes. At the initial value of Y, disposable income is higher, causing consumption to be higher. Other things equal, the goods market is out of whack: C + I + G + NX > Y. An increase in Y (of just the right amount) would restore equilibrium. Hence, each value of e is associated with a larger value of Y. OR, a decrease in NX of just the right amount would restore equilibrium at the initial value of Y. But the decrease in NX requires an increase in e. Hence, each value of Y is associated with a higher value of e.
Rationale: Doing this exercise now will break up your lecture, and will prepare students for the fiscal policy experiment that is coming up in just a few slides.
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