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International Trade and Equilibrium Output. Chapter 10 continued. GDPs. Equilibrium GDP for a closed economy= GDP = C + Ig Equilibrium GDP for an open economy without gov’t involvement = GDP = C + Ig + Xn Equilibrium GDP for an open economy with gov’t involvement = GDP = C + Ig + G + Xn.
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International Trade and Equilibrium Output Chapter 10 continued
GDPs • Equilibrium GDP for a closed economy= • GDP = C + Ig • Equilibrium GDP for an open economy without gov’t involvement = • GDP = C + Ig + Xn • Equilibrium GDP for an open economy with gov’t involvement = • GDP = C + Ig + G + Xn
Net Exports • Export – imports • Exports expand aggregate expenditure • Exports (X) create domestic production, income & employment due to foreign spending on US produced g & s • Imports contract aggregate expenditure • Imports (M) reduce the sum of C & Ig expenditures by the amount expended on imported goods (so this amount must be subtracted so that spending on US produced goods is not overstated)
Net Exports & Equilibrium GDP • POSITIVE NET EXPORTS • Multiplier effect • A positive Xn leads to a positive change in equilibrium GDP • See table 9.4 on page 173 • Suppose Xn is +5 billion for each level • GDP equilibrium = C + Ig + Xn • Where is the new equilibrium GDP? • 490 • A 5b increase in Xn = 20b in GDP—what is the multiplier? • 4
Generalization (page 187 in text) • Other things equal, positive net exports increase aggregate expenditures and GDP beyond what they would be in a closed economy
NEGATIVE NET EXPORTS • Multiplier effect • A negative Xn leads to a negative change in equilibrium GDP • See table 9.4 on page 173 • Suppose Xn is -5 billion for each level • GDP equilibrium = C + Ig + Xn • Where is the new equilibrium GDP? • 450 • A 5b decrease in Xn = 20b decrease in GDP—what is the multiplier? • 4
Generalization (page 187 in text) • All things equal, negative net exports reduce aggregate expenditures and GDP below what they would be in a closed economy
International Economic Linkages • Prosperity Abroad • Higher incomes of trading partners allows the US to sell more goods, raising the Xn and increasing GDP • Recession abroad causes the reverse effect
Exchange Rates • Depreciation of the dollar lowers the cost of American goods to foreigners and encourages exports from the US while discouraging the purchases of imports in the US • If economy is operating below full-employment, a rise in Xn will increase expenditure and expand GDP • If economy is at full-employment, an increase in Xn & expenditure will cause demand-pull inflation