2The IS Relation - Open Economy The Demand for Domestic GoodsIn an open economy, the demand for domestic goods is given by:
3The Demand for Domestic Goods The Determinants of C, I, and GThe real exchange rate affects the composition of consumption and investment, but not the overall level of these aggregates.
4The Demand for Domestic Goods The Determinants of ImportsA higher real exchange rate makes foreign goods relatively cheaper, leading to an increase in the quantity of imports.
5The Demand for Domestic Goods The Determinants of ExportsAn increase in Y*, or foreign output, leads to higher U.S. exports. An increase in , the value of domestic goods in terms of foreign goods, also leads to an decrease in exports.
6The Demand for Domestic Goods The Demand for Domestic Goods and Net Exports
7The Demand for Domestic Goods Adding the amount of exports to the domestic demand for domestic goods, AA, we obtain the demand for domestic goods, ZZ. The trade balance is a decreasing function of output.YTB is the value of output that corresponds to a trade balance.
8Equilibrium Output and the Trade Balance The goods market is in equilibrium when production is equal to the demand for domestic goods. At the equilibrium level of output, the trade balance may show a deficit or a surplus.
10Increases in Domestic Demand An increase in government spending leads to an increase in output and to a trade deficit.The effect of government spending in the open economy is smaller—the multiplier is smaller—than it would be in a closed economy.
11Increases in Foreign Demand An increase in foreign demand leads to an increase in output and to a trade surplus.The trade balance improves because the increase in imports does not offset the increase in exports.
12Comparison between Foreign and Domestic Increases in Demand Increases in demand, both foreign and domestic, lead to an increase in output. However, they have opposite impacts on the trade situation of the country.An increase in foreign demand is preferred to an increase in domestic demand because it leads to an improvement in the trade balance.
13‘Games’ between Countries: The Case of Fiscal Co-ordination In times of recession, countries with high trade deficits may wait for foreign demand to stimulate the economy.Coordination among countries, such as among the G7, is an attempt to adopt compatible macroeconomic policies.
14Depreciation and Trade Balance The Marshall-Lerner condition is the condition under which a real depreciation (a decrease in ) leads to an increase in net exports.
15Depreciation and Trade Balance The real exchange rate enters the right side of the equation in three places, this makes it clear that the real depreciation affects the trade balance through three separate channels:Exports, X, increase.Imports, IM, decreaseThe relative price of domestic goods in terms of foreign goods decreases.
16Dynamics: The J-CurveA depreciation may lead to an initial deterioration of the trade balance; decreases, but neither X nor M adjusts very much initially.Eventually, exports and imports respond, and depreciation leads to an improvement of the trade balance.
17Dynamics: The J-Curve The J-Curve A real depreciation leads initially to a deterioration, then to an improvement of the trade balance.
18The Effects of a Depreciation A real depreciation leads to an increase in output and an improvement in the trade balance.A depreciation works by making foreign goods relatively more expensive.
19Combining Exchange-Rate and Fiscal Policies Reducing the Trade Deficit Without Changing OutputTo reduce the trade deficit without changing output, the government must both achieve a depreciation and decrease government spending.A depreciation will increase output, while reduced government spending will decrease output.
24Saving, Investment, and the Trade Balance A trade surplus must correspond to an excess of saving over investment, and vice versa.If saving remains constant, an increase in investment results in a deterioration of the trade balance.An increase in the budget deficit leads to a deterioration of the trade balance.