国际金融课件-chapter-8-How-Does-the-Open-Macroeconomy.ppt

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1、一、一、The Performance of A National Macroeconomic1、Internal Balance Full employment,or an acceptably low unemployment rate The economys production grows over time.Price stability,or an acceptably low inflation rate 2、External balance The achievement of a reasonable and sustainable balance of payments

2、with the rest of the world Useful indicator:Official settlements balance approximately equal to zero(so that the country is not losing official international reserves or acquiring unwanted official international reserves)二、二、A framework for Macroeconomic analysis1.Domestic production depends on aggr

3、egate demand Y=AD=C+Id+G+(X-M)National expenditures(E):E=C+Id+G C=C(Y)Id=Id(i)(other influences as a source of shocks to the economy)2.Trade depends on income the volume of a nations imports depends positively on the level of real national income or production.M=M(Y)Assume that export volumes are in

4、dependent of this countrys national income.3.Equilibrium GDPAssume:all price and pricelike variables are constant.Y=AD(Y)=E(Y)+X-M(Y)(Y-C-G)=(E-C-G)+(X-M)or S=Id+(X-M)=Id+IfFigure 8.1-Equilibrium Domestic ProductionFigure 8.1-Equilibrium Domestic Production4.The spending Multiplier in a small,open E

5、conomyWhen national spending rises in an economy,this extra spending sets off a multiplier process of expansion of domestic production and income.The marginal propensity to save(s)The marginal propensity to import(m)The marginal propensity to consume domestic product(1-s-m)The spending multiplier fo

6、r a small open economy is Y=G+(1-s-m)Y Y(1-1+s+m)=G Y/G=1/(s+m)The value of this multiplier is the same whether the initial extra spending is made by the government or a surge in consumption,a rise in private investment spending,or a rise in exports.The value of this multiplier is smaller in a small

7、 open economy than the multiplier in a closed economy.Imports rose but exports constant for this small country,the countrys trade balance thus deteriorates.5.Foreign-Income Repercussionswhen a large nations extra spending leads to extra imports,these imports noticeably raise foreign incomes and crea

8、te foreign jobs.The more our countrys imports affect foreign incomes,and the more the foreign countries have a propensity to import from our country,the more our true spending multiplier exceeds the simple formula 1/(s+m)Figure 8.2Foreign Trade and Income Repercussions Figure 8.3(p203)The bigger the

9、 country,the more its spending tends to affect other countries.The importance of close trading ties is also evident in the large effect.三、三、A more complete framework:three markets Mundell-Fleming model Figure 8.3Overview of Macromodel1.The Domestic Product Market the IS curve shows all combinations

10、of domestic product levels and interest rates for which the domestic product market is in equilibrium.S(Y)=Id(i)+X M(Y)+-The higher the interest rate,the lower the level of domestic product that is consistent with it.Changes in any influence other than interest rates that can directly affect aggrega

11、te demand cause a shift in the IS curve.Figure 8.4IS Curve2.The Money MarketThe demand for(nominal)money L L=L(PY,i)The equilibrium between money supply Ms and money demand Ms=L(PY,i)The LM curve shows all combinations of production levels and interest rates for which the money market is in equilibr

12、ium.+-+Figure 8.5LM Curve3.The foreign exchange market(or balance of Payments B=CA(Y)+KA(i)The FE curve shows the set of all interest and production combinations in our country that result in a zero value for the countrys official settlements balance.Like the LM curve,slopes upward.+-How does the sl

13、ope of the FE curve compare to the LM curve?It depends on how responsive money demand and the balance of payments are to changes in the interest rate and domestic product.If capital flows are very sensitive to interest rates,the FE curve is relatively flat.exogenous forces shifts the FE curve.Figure

14、 8.6FE Curve4.Three markets togetherThe official settlements balance is in surplus if the IS-LM intersection is to the left of the FE curve.The official settlements balance is zero if the IS-LM intersection is on the FE curve.The official settlements balance is in deficit if the IS-LM intersection i

15、s to the right of the FE curve.四、四、The price level does change1.The price level does change over time for three basic reasons:Most countries have some amount of ongoing inflation.Strong or weak aggregate demand can put pressure on the countrys price level.Shocks occasionally can cause large changes

16、in the price level even in the short run.2.Trade also depends on price competitivenessThe demand for imports has two major determinants:M=M(Y,Pf e/P)The demand for exports has two major determinants:X=X(Yf,Pf e/P)+-+Our international price competitiveness improves if the foreign-currency price of fo

17、reign substitute products(Pf)is higher,or if the domestic-currency price of our products(P)is lower,or if the nominal exchange rate value of our currency is lower(e is higher).Over time,the foreign inflation rate is higher,our inflation rate is lower,or our currency appreciates less(or depreciates m

18、ore).A change in international price competitiveness shifts two curves:the FE and the IS curves.Summary Internal balance and external balance A framework for Macroeconomic analysis Y=AD(Y)=E(Y)+X-M(Y)The spending multiplier for a small open economy is Y/G=1/(s+m)Foreign-Income Repercussions Mundell-Fleming model:three markets equilibrium The price level changes:Trade depends on price competitiveness

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