克鲁格曼国际经济学(第六版)的教师手册(含英文习题答案)CH18
克鲁格曼《国际经济学》第八版课后答案(英文)-Ch18
Chapter 18The International Monetary System, 1870–1973Chapter OrganizationMacroeconomic Policy Goals in an Open EconomyInternal Balance: Full Employment and Price-Level StabilityExternal Balance: The Optimal Level of the Current Account International Macroeconomic Policy under the Gold Standard, 1870–1914 Origins of the Gold StandardExternal Balance under the Gold StandardThe Price-Specie-Flow MechanismThe Gold Standard “Rules of the Game”: Myth and RealityBox: Hume v. the MercantilistsInternal Balance under the Gold StandardCase Study: The Political Economy of Exchange Rate Regimes:Conflict over America’s Monetary Standard During the 1890s The Interwar Years, 1918–1939The Fleeting Return to GoldInternational Economic DisintegrationCase Study: The International Gold Standard and the Great DepressionThe Bretton Woods System and the International Monetary Fund Goals and Structure of the IMFConvertibility and the Expansion of Private Capital FlowsSpeculative Capital Flows and CrisesAnalyzing Policy Options under the Bretton Woods System Maintaining Internal BalanceMaintaining External BalanceExpenditure-Changing and Expenditure-Switching PoliciesThe External-Balance Problem of the United StatesCase Study: The Decline and Fall of the Bretton Woods System Worldwide Inflation and the Transition to Floating Rates SummaryChapter OverviewThis is the first of five international monetary policy chapters. These chapters complement the preceding theory chapters in several ways. They provide the historical and institutional background students require to place their theoretical knowledge in a useful context. The chapters also allow students, through study of historical and current events, to sharpen their grasp of the theoretical models and to develop the intuition those models can provide. (Application of the theory to events of current interest will hopefully motivate students to return to earlier chapters and master points that may have been missed on the first pass.)Chapter 18 chronicles the evolution of the international monetary system from the gold standard of1870–1914, through the interwar years, and up to and including the post-World War II Bretton Woods regime that ended in March 1973. The central focus of the chapter is the manner in which each system addressed, or failed to address, the requirements of internal and external balance for its participants.A country is in internal balance when its resources are fully employed and there is price level stability. External balance implies an optimal time path of the current account subject to its being balanced over the long run. Other factors have been important in the definition of external balance at various times, and these are discussed in the text. The basic definition of external balance as an appropriate current-account level, however, seems to capture a goal that most policy-makers share regardless of the particular circumstances.The price-specie-flow mechanism described by David Hume shows how the gold standard could ensure convergence to external balance. You may want to present the following model of the price-specie-flow mechanism. This model is based upon three equations: 1. The balance sheet of the central bank. At the most simple level, this is justgold holdings equals the money supply: G M.2. The quantity theory. With velocity and output assumed constant and bothnormalized to 1, this yields the simple equation M P.3. A balance of payments equation where the current account is a function of thereal exchange rate and there are no private capital flows: CA f(E P*/P)These equations can be combined in a figure like the one below. The 45 line represents the quantity theory, and the vertical line is the price level where the real exchange rate results in a balanced current account. The economy moves along the 45 line back towards the equilibrium Point 0 whenever it is out of equilibrium. For example, the loss of four-fifths of a country’s gold would put that country at Point a with lower prices and a lower money supply. The resulting real exchange rate depreciation causes a current account surplus which restores money balances as the country proceeds up the 45 line froma to 0.FigureThe automatic adjustment process described by the price-specie-flow mechanism is expedited by following “rules of the game” under which governments contract the domestic source components oftheir monetary bases when gold reserves are falling (corresponding to a current-account deficit) and expand when gold reserves are rising (the surplus case).In practice, there was little incentive for countries with expanding gold reserves to follow the “rules of the game.” This increased the contractionary burden shouldered by countries with persistent current account deficits. The gold standard also subjugated internal balance to the demands of external balance. Research suggests price-level stability and high employment were attained less consistently under the gold standard than in the post-1945 period.The interwar years were marked by severe economic instability. The monetization of war debt and of reparation payments led to episodes of hyperinflation in Europe. Anill-fated attempt to return to thepre-war gold parity for the pound led to stagnation in Britain. Competitive devaluations and protectionism were pursued in a futile effort to stimulate domestic economic growth during the Great Depression.These beggar-thy-neighbor policies provoked foreign retaliation and led to the disintegration of the world economy. As one of the case studies shows, strict adherence to the Gold Standard appears to have hurt many countries during the Great Depression.Determined to avoid repeating the mistakes of the interwar years, Allied economic policy-makers metat Bretton Woods in 1944 to forge a new international monetary system for the postwar world. The exchange-rate regime that emerged from this conference had at its center the . dollar. All other currencies had fixed exchange rates against the dollar, which itself had a fixed value in terms of gold.An International Monetary Fund was set up to oversee the system and facilitate its functioning by lending to countries with temporary balance of payments problems.A formal discussion of internal and external balance introduces the concepts of expenditure-switching and expenditure-changing policies. The Bretton Woods system, with its emphasis on infrequent adjustmentof fixed parities, restricted the use of expenditure-switching policies. Increases in U.S. monetary growth to finance fiscal expenditures after the mid-1960s led to a loss of confidence in the dollar and the termination of the dollar’s convertibility into gold. The analysis presented in the text demonstrateshow the Bretton Woods system forced countries to “import” inflation from the United States and shows that the breakdown of the system occurred when countries were no longer willing to accept this burden.Answers to Textbook Problems1. a. Since it takes considerable investment to develop uranium mines, you wouldwant a larger current account deficit to allow your country to finance some of the investment with foreign savings.b. A permanent increase in the world price of copper would cause a short-termcurrent account deficit if the price rise leads you to invest more in coppermining. If there are no investment effects, you would not change yourexternal balance target because it would be optimal simply to spend youradditional income.c. A temporary increase in the world price of copper would cause a currentaccount surplus. You would want to smooth out your country’s consumption bysaving some of its temporarily higher income.d. A temporary rise in the world price of oil would cause a current accountdeficit if you were an importer of oil, but a surplus if you were an exporter of oil.2. Because the marginal propensity to consume out of income is less than 1, atransfer of income from B to A increases savings in A and decreases savings in B.Therefore, A has a current account surplus and B has a corresponding deficit.This corresponds to a balance of payments disequilibrium in Hume’s world, which must be financed by gold flows from B to A. These gold flows increase A’s money supply and decrease B’s money supply, pushing up prices in A and depressingprices in B. These price changes cease once balance of payments equilibrium has been restored.3. Changes in parities reflected both initial misalignments and balance of paymentscrises. Attempts to return to the parities of the prewar period after the war ignored the changes in underlying economic fundamentals that the war caused. This made some exchange rates less than fully credible and encouraged balance ofpayments crises. Central bank commitments to the gold parities were also less than credible after the wartime suspension of the gold standard, and as a result of the increasing concern of governments with internal economic conditions.4. A monetary contraction, under the gold standard, will lead to an increase in thegold holdings of the contracting country’s central bank if other countries do not pursue a similar policy. All countries cannot succeed in doing thissimultaneously since the total stock of gold reserves is fixed in the short run.Under a reserve currency system, however, a monetary contraction causes anincipient rise in the domestic interest rate, which attracts foreign capital. The central bank must accommodate the inflow of foreign capital to preserve theexchange rate parity. There is thus an increase in the central bank’s holdings of foreign reserves equal to the fall in its holdings of domestic assets. There is no obstacle to a simultaneous increase in reserves by all central banksbecause central banks acquire more claims on the reserve currency country while their citizens end up with correspondingly greater liabilities.5. The increase in domestic prices makes home exports less attractive and causes acurrent account deficit. This diminishes the money supply and causescontractionary pressures in the economywhich serve to mitigate and ultimately reverse wage demands and price increases.6. A “demand determined” increase in dollar reserve holdings would not affect theworld supply of money as central banks merely attempt to trade their holdings of domestic assets for dollar rese rves. A “supply determined” increase in reserve holdings, however, would result from expansionary monetary policy in the United States (the reserve center). At least at the end of the Bretton Woods era the increase in world dollar reserves arose in part because of an expansionarymonetary policyin the United States rather than a desire by other central banks to increasetheir holdings of dollar assets. Only the “supply determined” increase indollar reserves is relevant for analyzing the relationship between world holdings of dollar reserves by central banks and inflation.7. An increase in the world interest rate leads to a fall in a central bank’sholdings of foreign reserves as domestic residents trade in their cash forforeign bonds. This leads to a d ecline in the home country’s money supply. The central bank of a “small” country cannot offset these effects sinceit cannot alter the world interest rate. An attempt to sterilize the reserve loss through open market purchases would fail unless bonds are imperfect substitutes.8. Capital account restrictions insulate the domestic interest rate from the worldinterest rate. Monetary policy, as well as fiscal policy, can be used to achieve internal balance. Because there are no offsetting capital flows, monetary policy, as well as fiscal policy, can be used to achieve internal balance. The costs of capital controls include the inefficiency which is introduced when the domestic interest rate differs from the world rate and the high costs of enforcing the controls.9. Yes, it does seem that the external balance problem of a deficit country is moresevere. While the macroeconomic imbalance may be equally problematic in the long run regardless of whether it is a deficit or surplus, large external deficits involve the risk that the market will fix the problem quickly by ceasing to fund the external deficit. In this case, there may have to be rapid adjustment that could be disruptive. Surplus countries are rarely forced into rapid adjustments, making the problems less risky.10. An inflow attack is different from capital flight, but many parallels exist. Inan “outflow” attack, speculators sell the home currency and drain the central bank of its foreign assets. The central bank could always defend if it so chooses (they can raise interest rates to improbably high levels), but if it is unwilling to cripple the economy with tight monetary policy, it must relent. An “inflow”attack is similar in that the central bank can always maintain the peg, it is just that the consequences of doing so may be more unpalatable than breaking the peg. If money flows in, the central bank must buy foreign assets to keep thecurrency from appreciating. If the central bank cannot sterilize all the inflows (eventually they may run out of domestic assets to sell to sterilize thetransactions where they are buying foreign assets), it will have to either let the currency appreciate or let the money supply rise. If it is unwilling to allow and increase in inflation due to a rising money supply, breaking the peg may be preferable.11. a. We know that China has a very large current account surplus, placing them highabove the XX line. They also have moderate inflationary pressures (describedas “gathering” in the question, implying they are not yet very strong). This suggests that China is above the II line, but not too far above it. It wouldbe placed in Zone 1 (see below).b. China needs to appreciate the exchange rate to move down on the graph towardsbalance. (Shown on the graph with the dashed line down)c. China would need to expand government spending to move to the right and hitthe overall balance point. Such a policy would help cushion the negative aggregate demand pressurethat the appreciation might generate.。
克鲁格曼《国际经济学》（国际金融部分）课后习题答案（英文版）第一章
克鲁格曼《国际经济学》（国际金融部分）课后习题答案（英文版）第一章CHAPTER 1INTRODUCTIONChapter OrganizationWhat is International Economics About?The Gains from TradeThe Pattern of TradeProtectionismThe Balance of PaymentsExchange-Rate DeterminationInternational Policy CoordinationThe International Capital MarketInternational Economics: Trade and MoneyCHAPTER OVERVIEWThe intent of this chapter is to provide both an overview of the subject matter of international economics and to provide a guide to the organization of the text. It is relatively easy for an instructor to motivate the study of international trade and finance. The front pages of newspapers, the covers of magazines, and the lead reports of television news broadcasts herald the interdependence of the U.S. economy with the rest of the world. This interdependence may also be recognized by students through their purchases of imports of all sorts of goods, their personal observations of the effects of dislocations due to international competition, and their experience through travel abroad.The study of the theory of international economics generates an understanding of many key events that shape our domesticand international environment. In recent history, these events include the causes and consequences of the large current account deficits of the United States; the dramatic appreciation of the dollar during the first half of the 1980s followed by its rapid depreciation in the second half of the 1980s; the Latin American debt crisis of the 1980s and the Mexico crisis in late 1994; and the increased pressures for industry protection against foreign competition broadly voiced in the late 1980s and more vocally espoused in the first half of the 1990s. Most recently, the financial crisis that began in East Asia in 1997 andspread to many countries around the globe and the Economic and Monetary Union in Europe have highlighted the way in which various national economies are linked and how important it is for us to understand these connections. At the same time, protests at global economic meetings have highlighted opposition to globalization. The text material will enable students to understand the economic context in which such events occur.Chapter 1 of the text presents data demonstrating the growth in trade and increasing importance of international economics. This chapter also highlights and briefly discusses seven themes which arise throughout the book. These themes include: 1) the gains from trade;2) the pattern of trade; 3) protectionism; 4), the balance of payments; 5) exchange rate determination; 6) international policy coordination; and 7) the international capital market. Students will recognize that many of the central policy debates occurring today come under the rubric of one of these themes. Indeed, it is often a fruitful heuristic to use current events to illustrate the force of the key themes and arguments which are presentedthroughout the text.。
克鲁格曼《国际经济学》笔记和课后习题详解(发展中国家的贸易政策)【圣才出品】
十万种考研考证电子书、题库、视频学习平台第10章发展中国家的贸易政策10.1 复习笔记1．进口替代战略（1）含义及特征进口替代战略又称内向型发展战略，其基本特征是以国内生产的工业制成品代替进口品，满足国内需求，并以此带动国民经济增长。
（2）一般做法①首先发展相对简易的日用工业，然后发展重化工业。
②压缩政府的不必要开支，增加生产性投资比重。
③对建立替代工业所必须的机器设备、中间品或原料进口采取关税减免和政府补贴的优惠政策。
④通过关税、非关税壁垒以及高估本国币值的方式，限制一般工业品进口，同时保证资本品以较低价格进口。
（3）幼稚工业论（幼稚工业论是进口替代战略的指导思想）①含义发展中国家具有制造业的潜在的比较优势，但发展中国家新建的制造工业最初却不能与发达国家已经成熟完善的制造业竞争。
为了使新成长的制造业获得立足之地，政府应该暂时地给予支持，直到它们足够强大，能够参与国际竞争为止。
②注意之处十万种考研考证电子书、题库、视频学习平台a．试图从现在就进入未来才会具有比较优势的产业，并不总能得到好处。
b．如果政府保护本身有助于培养制造业的竞争力，那么保护才是值得的。
反之，则不值得。
总之，只有存在某种国内市场失灵的情况下，幼稚工业论才能成为政府干预的有效论据。
③市场失灵幼稚工业是否需要保护取决于幼稚工业的保护必须与一种具体的市场失灵相联系，这种市场失灵会使得私有市场不能以应有的速度发展这一产业。
有两种类型的市场失灵可以作为保护幼稚工业的依据：不完全资本市场和无偿占用问题。
a．不完全资本市场作为保护幼稚工业的依据认为，如果一个发展中国家没有一整套金融机构可以使得传统部门的储蓄用于新成长部门的投资，那么新工业部门的增长将会受这些工业当前盈利能力的限制。
最优政策是建立更完善的资本市场。
但是，由于对这些幼稚工业的保护可以提高利润，从而使其更快成长，所以保护幼稚工业可以作为次优的政策选择。
b．无偿占用问题的思想是：新产业产生的社会福利没有得到补偿。
《国际经济学》克鲁格曼(第六版)习题答案imsect3
OVERVIEW OF SECTION III: EXCHANGE RATES AND OPEN ECONOMY MACROECONOMICSSection III of the textbook is comprised of six chapters:Chapter 12 National Income Accounting and the Balance of PaymentsChapter 13 Exchange Rates and the Foreign Exchange Market: An Asset Approach Chapter 14 Money, Interest Rates, and Exchange RatesChapter 15 Price Levels and the Exchange Rate in the Long RunChapter 16 Output and the Exchange Rate in the Short RunChapter 17 Fixed Exchange Rates and Foreign Exchange InterventionSECTION III OVERVIEWThe presentation of international finance theory proceeds by building up an integrated model of exchange rate and output determination. Successive chapters in Part III construct this model step by step so students acquire a firm understanding of each component as well as the manner in which these components fit together. The resulting model presents a single unifying framework admitting the entire range of exchange rate regimes from pure float to managed float to fixed rates. The model may be used to analyze both comparative static and dynamic time path results arising from temporary or permanent policy or exogenous shocks in an open economy.The primacy given to asset markets in the model is reflected in the discussion of national income and balance of payments accounting in the first chapter of this section. Chapter 12 begins with a discussion of the focus of international finance. The discussion then proceeds to national income accounting in an open economy. The chapter points out, in the discussion on the balance of payments account, that current account transactions must be financed by financial account flows from either central bank or noncentral bank transactions. A case study uses national income accounting identities to consider the link between government budget deficits and the current account.Observed behavior of the exchange rate favors modeling it as an asset price rather than as a goods price. Thus, the core relationship for short-run exchange-rate determination in the model developed in Part III is uncovered interest parity. Chapter 13 presents a model inwhich the exchange rate adjusts to equate expected returns on interest-bearing assets denominated in different currencies given expectations about exchange rates, and the domestic and foreign interest rate. This first building block of the model lays the foundation for subsequent chapters that explore the determination of domestic interest rates and output, the basis for expectations of future exchange rates and richer specifications of the foreign-exchange market that include risk. An appendix to this chapter explains the determination of forward exchange rates.Chapter 14 introduces the domestic money market, linking monetary factors to short-run exchange-rate determination through the domestic interest rate. The chapter begins with a discussion of the determination of the domestic interest rate. Interest parity links the domestic interest rate to the exchange rate, a relationship captured in a two-quadrant diagram. Comparative statics employing this diagram demonstrate the effects of monetary expansion and contraction on the exchange rate in the short run. Dynamic considerations are introduced through an appeal to the long run neutrality of money that identifies a long-run steady-state value toward which the exchange rate evolves. The dynamic time path of the model exhibits overshooting of the exchange-rate in response to monetary changes.Chapter 15 develops a model of the long run exchange rate. The long-run exchange rate plays a role in a complete short-run macroeconomic model since one variable in that model is the expected future exchange rate. The chapter begins with a discussion of the law of one price and purchasing power parity. A model of the exchange rate in the long-run based upon purchasing power parity is developed. A review of the empirical evidence, however, casts doubt on this model. The chapter then goes on to develop a general model of exchange rates in the long run in which the neutrality of monetary shocks emerges as a special case. In contrast, shocks to the output market or changes in fiscal policy alter the long run real exchange rate. This chapter also discusses the real interest parity relationship that links the real interest rate differential to the expected change in the real exchange rate. An appendix examines the relationship of the interest rate and exchange rate under a flexible-price monetary approach.Chapter 16 presents a macroeconomic model of output and exchange-rate determination in the short run. The chapter introduces aggregate demand in a setting of short-run price stickiness to construct a model of the goods market. The exchange-rate analysis presented in previous chapters provides a model of the asset market. The resulting model is, in spirit, very close to the classic Mundell-Fleming model. This model is used to examine the effects of avariety of policies. The analysis allows a distinction to be drawn between permanent and temporary policy shifts through the pedagogic device that permanent policy shifts alter long-run expectations while temporary policy shifts do not. This distinction highlights the importance of exchange-rate expectations on macroeconomic outcomes. A case study of U.S. fiscal and monetary policy between 1979 and 1983 utilizes the model to explain notable historical events. The chapter concludes with a discussion of the links between exchange rate and import price movements which focuses on the J-curve and exchange-rate pass-through. An appendix to the chapter compares the IS-LM model to the model developed in this chapter. A second appendix considers intertemporal trade and consumption demand. A third appendix discusses the Marshall-Lerner condition and estimates of trade elasticities.The final chapter of this section discusses intervention by the central bank and the relationship of this policy to the money supply. This analysis is blended with the previous chapter's short-run macroeconomic model to analyze policy under fixed rates. The balance sheet of the central bank is used to keep track of the effects of foreign exchange intervention on the money supply. The model developed in previous chapters is extended by relaxing the interest parity condition and allowing exchange-rate risk to influence agents' decisions. This allows a discussion of sterilized intervention. Another topic discussed in this chapter is capital flight and balance of payments crises with an introduction to different models of how a balance of payments or currency crisis can occur. The analysis also is extended to a two-country framework to discuss alternative systems for fixing the exchange-rate as a prelude to Part IV. An appendix to Chapter 17 develops a model of the foreign-exchange market in which risk factors make domestic-currency and foreign-currency assets imperfect substitutes.A second appendix explores the monetary approach to the balance of payments. The third appendix discusses the timing of a balance of payments crisis.。
克鲁格曼《国际经济学》笔记和课后习题详解（国民收入核算与国际收支平衡）【圣才出品】
克鲁格曼《国际经济学》笔记和课后习题详解（国民收⼊核算与国际收⽀平衡）【圣才出品】⼗万种考研考证电⼦书、题库、视频学习平台第12章国民收⼊核算与国际收⽀平衡12.1 复习笔记1．国民收⼊账户（1）GNP宏观经济分析的主要着眼点是⼀国的国民⽣产总值（GNP），它是⼀国的⽣产要素在⼀定时期内所⽣产并在市场上卖出的最终商品和服务的价值总量。
GNP是宏观经济学家研究⼀国产出时所⽤的基本度量⼿段，由花费在最终产品上的⽀出的市场价值量加总⽽得到。
GNP的⽀出与劳动、资本以及其他⽣产要素紧密相连。
根据购买最终产品的四种可能⽤途，GNP可以分解为以下四个部分：消费（国内居民私⼈消费的数额）、投资（私⼈企业为进⾏再⽣产⽽留下的⽤于购买⼚房设备的数额）、政府购买（政府使⽤的数额）和经常项⽬余额（对外净出⼝的商品和服务的数额）。
（2）国民收⼊国民收⼊等于GNP减去折旧，加上净单边转移⽀付，再减去间接商业税。
即：国民收⼊＝GNP－折旧＋净单边转移⽀付－间接商业税在实际经济中，要使GNP和国民收⼊的恒等关系完全成⽴，必须对GNP的定义作⼀定调整：①GNP不考虑机器和建筑物在使⽤过程中由于磨损⽽引起的经济损失。
这部分经济损失称为折旧，折旧减少了资本所有者的收⼊。
为了计算⼀定时期的国民收⼊，必须从GNP 中减去这⼀时期资本的折旧。
GNP减去折旧后称为国民⽣产净值（NNP）。
⼗万种考研考证电⼦书、题库、视频学习平台②⼀国的收⼊可能会包括外国居民的赠与，这种赠与称为单边转移⽀付。
单边转移⽀付的例⼦包括向居住在国外的退休公民⽀付养⽼⾦、赔偿⽀付和对遭受旱灾国家的救济援助等。
净单边转移⽀付是⼀国收⼊的⼀部分，但不是⼀国产出的⼀部分，因此，净单边转移⽀付，必须加到NNP中以计算国民收⼊。
③国民收⼊取决于⽣产者获得的产品价格，GNP则取决于购买者所⽀付的价格。
但是，这两组价格并不是完全⼀致的，例如，销售税会使得购买者的⽀付⼤于销售者的收⼊，导致GNP被⾼估，超过了国民收⼊。
课后答案网址大全
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课后习题答案大全
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克鲁格曼国际经济学答案（英文）
Overview of Section IInternational Trade TheorySection I of the text is comprised of six chapters: Chapter 2 Labor Productivity and Comparative Advantage: The Ricardian Model Chapter 3 Specific Factors and Income Distribution Chapter 4 Resources and Trade: The Heckscher-Ohlin Model Chapter 5 The Standard Trade Model Chapter 6 Economies of Scale, Imperfect Competition, and International Trade Chapter 7 International Factor Movements T Section I Overview Section I of the text presents the theory of international trade. The intent of this section is to explore the motives for and implications of patterns of trade between countries. The presentation proceeds by introducing successively more general models of trade, where the generality is provided by increasing the number of factors used in production, by increasing the mobility of factors of production across sectors of the economy, by introducing more general technologies applied to production, and by examining different types of market structure. Throughout Section I, policy concerns and current issues are used to emphasize the relevance of the theory of international trade for interpreting and understanding our economy. Chapter 2 gives a brief overview of world trade. In particular, it discusses what we know about the quantities and pattern of world trade today. The chapter uses the empirical relationship known as the gravity model as a framework to describe trade. This framework describes trade as a function of the size of the economies involved and their distance. It can then be used to see where countries are trading more or less than expected. The chapter also notes the growth in world trade over the previous decades and uses the previous era of globalization (pre-WWI) as context for today’s experience. Chapter 3 introduces you to international trade theory through a framework known as the Ricardian model of trade. This model addresses the issue of why two countries would want to trade with each other. This model shows how mutually-beneficial trade arises when there are two countries, each with one factor of production which can be applied toward producing each of two goods. Key concepts are introduced, such as the production possibilities frontier, comparative advantage versus absolute advantage, gains from trade, relative prices, and relative wages across countries. 4 Krugman/Obstfeld • International Economics: Theory and Policy, Seventh Edition Chapter 4 introduces what is known as the classic Heckscher-Ohlin model of international trade. Using this framework, you can work through the effects of trade on wages, prices and output. Many important and intuitive results are derived in this chapter including: the Rybczynski Theorem, the Stolper-Samuelson Theorem, and the Factor Price Equalization Theorem. Implications of the Heckscher-Ohlin model for the pattern of trade among countries are discussed, as are the failures of empirical evidence to confirm the predictions of the theory. The chapter also introduces questions of political economy in trade. One important reason for this addition to the model is to consider the effects of trade on income distribution. This approach shows that while nations generally gain from international trade, it is quite possible that specific groups within these nations could be harmed by this trade. This discussion, and related questions about protectionism versus globalization, becomes broader and even more interesting as you work through the models and different assumptions of subsequent chapters. Chapter 5 presents a general model of international trade which admits the models of the previous chapters as special cases. This “standard trade model” is depicted graphically by a general equilibrium trade model as applied to a small open economy. Relative demand and relative supply curves are used to analyze a variety of policy issues, such as the effects of economic growth, the transfer problem, and the effects of trade tariffs and production subsidies. The appendix to the chapter develops offer curve analysis. While an extremely useful tool, the standard model of trade fails to account for some important aspects of international trade. Specifically, while the factor proportions Heckscher-Ohlin theories explain some trade flows between countries, recent research in international economics has placed an increasing emphasis on economies of scale in production and imperfect competition among firms. Chapter 6 presents models of international trade that reflect these developments. The chapter begins by reviewing the concept of monopolistic competition among firms, and then showing the gains from trade which arise in such imperfectly competitive markets. Next, internal and external economies of scale in production and comparative advantage are discussed. The chapter continues with a discussion of the importance of intra-industry trade, dumping, and external economies of production. The subject matter of this chapter is important since it shows how gains from trade arise in ways that are not suggested by the standard, more traditional models of international trade. The subject matter also is enlightening given the increased emphasis on intra-industry trade in industrialized countries. Chapter 7 focuses on international factor mobility. This departs from previous chapters which assumed that the factors of production available for production within a country could not leave a country’s borders. Reasons for and the effects of international factor mobility are discussed in the context of a one-factor (labor) production and trade model. The analysis of the international mobility of labor motivates a further discussion of international mobility of capital. The international mobility of capital takes the form of international borrowing and lending. This facilitates the discussion of inter-temporal production choices and foreign direct investment behavior. 。
国际经济学(克鲁格曼)课后习题答案1-8章
第一章练习与答案1．为什么说在决定生产和消费时，相对价格比绝对价格更重要？答案提示：当生产处于生产边界线上，资源则得到了充分利用，这时，要想增加某一产品的生产，必须降低另一产品的生产，也就是说，增加某一产品的生产是有机会机本（或社会成本）的。
生产可能性边界上任何一点都表示生产效率和充分就业得以实现，但究竟选择哪一点，则还要看两个商品的相对价格，即它们在市场上的交换比率。
相对价格等于机会成本时，生产点在生产可能性边界上的位置也就确定了。
所以，在决定生产和消费时，相对价格比绝对价格更重要。
2．仿效图1—6和图1—7，试推导出Y商品的国民供给曲线和国民需求曲线。
答案提示：3．在只有两种商品的情况下，当一个商品达到均衡时，另外一个商品是否也同时达到均衡？试解释原因。
答案提示：4．如果生产可能性边界是一条直线，试确定过剩供给（或需求）曲线。
答案提示：5．如果改用Y商品的过剩供给曲线（B国）和过剩需求曲线（A 国）来确定国际均衡价格，那么所得出的结果与图1—13中的结果是否一致？答案提示：国际均衡价格将依旧处于贸易前两国相对价格的中间某点。
6．说明贸易条件变化如何影响国际贸易利益在两国间的分配。
答案提示：一国出口产品价格的相对上升意味着此国可以用较少的出口换得较多的进口产品，有利于此国贸易利益的获得，不过，出口价格上升将不利于出口数量的增加，有损于出口国的贸易利益；与此类似，出口商品价格的下降有利于出口商品数量的增加，但是这意味着此国用较多的出口换得较少的进口产品。
对于进口国来讲，贸易条件变化对国际贸易利益的影响是相反的。
7．如果国际贸易发生在一个大国和一个小国之间，那么贸易后，国际相对价格更接近于哪一个国家在封闭下的相对价格水平？答案提示：贸易后，国际相对价格将更接近于大国在封闭下的相对价格水平。
8．根据上一题的答案，你认为哪个国家在国际贸易中福利改善程度更为明显些？答案提示：小国。
9*．为什么说两个部门要素使用比例的不同会导致生产可能性边界曲线向外凸？答案提示：第二章答案1．根据下面两个表中的数据，确定（1）贸易前的相对价格；（2）比较优势型态。
克鲁格曼国际经济学答案
Chapter 61.For each of the following examples, explain whether this is a case of external or internaleconomies of scale:a.Most musical wind instruments in the United States are produced by more than adozen factories in Elkhart, Indiana.b.All Hondas sold in the United States are either imported or produced in Marysville,Ohio.c.All airframes for Airbus, Europe’s only producer of large aircraft, are assembled inT oulouse, France.d.Hartford, Connecticut is the insurance capital of the northeastern United States.External economies of scale: Cases a and d. The productions of these two industries concentrate in a few locations and successfully reduce each industry's costs even when the scale of operation of individual firms remains small. External economies need not lead to imperfect competition. The benefits of geographical concentration may include a greater variety of specialized services to support industry operations and larger labor markets or thicker input markets.Internal economies of scale: Cases b and c. Both of them occur at the level of the individual firm. The larger the output of a product by a particular firm, the lower its average costs. This leads to imperfect competition as in petrochemicals, aircraft, and autos.2.In perfect competition, firm set price equal to marginal cost. Why isn’t this possiblewhen there are internal economies of scale?Unlike the case of perfectly competitive markets, under monopoly marginal revenue is not equal to price. The profit maximizing output level of a monopolist occurs where marginal revenue equals marginal cost. Marginal revenue is always less than price under imperfectly competitive markets because to sell an extra unit of output the firm must lower the price of all units, not just the marginal one.3.It is often argued that the existence of increasing returns is a source of conflict betweencountries, since each country is better off if it can increase its production in those industries characterized by economies of scale. Evaluate this view in terms of both the monopolistic competition and the external economy models.Both internal economies of scale (which may lead to monopolistic competition) and external economies of scale could lead to increasing returns.By concentrating the production of each good with economies of scale in one country rather than spreading the production over several countries, the world economy will use the same amount of labor to produce more output.In the monopolistic competition model, the concentration of labor benefits the host country.The host country can capture some monopoly rents. But the rest of the world may hurt and have to face higher prices on its consumption goods.In the external economies case, such monopolistic pricing behavior is less likely since imperfectly competitive markets are less likely.4.Suppose the two countries we considered in the numerical example on pages 132-135were to integrate their automobile marker with a third country with an annual market for 3.75 million automobiles. Find the number of firms, the output per firm, and theprice per automobile in the new integrated market after trade.15.8n X 1c P c AC 2=⇒==−−→−+=+==n S Fb S n bn X F AC PHowever, since you will never see 0.8 firms, there will be 15 firms that enter the market, not16 firms since the last firm knows that it can not make positive profits. The rest of the solution is straight-forward. Using X=S/n, output per firm is 41,666 units. Using the price equation, and the fact that c=5,000, yields an equilibrium price of $7,000.5. Evaluate the relative importance of economies of scale and comparative advantage incausing the following:a. Most of the world ’s aluminum is smelted in Norway or Canada.b. Half of the world ’s large jet aircraft are assembled in Seattle.c. Most semiconductors are manufactured in either the United States or Japan.d. Most Scotch whiskey comes from Scotland.e. Much of the world ’s best wine comes from France.a. The relatively few locations for production suggest external economies of scale in production. If these operations are large, there may also be large internal economies of scale in production.b. Since economies of scale are significant in airplane production, it tends to be done by a small number of (imperfectly competitive) firms at a limited number of locations. One such location is Seattle, where Boeing produces.c. Since external economies of scale are significant in semiconductor production,semiconductor industries tend to be concentrated in certain geographic locations. If, for some historical reason, a semiconductor is established in a specific location, the export of semiconductors by that country is due to economies of scale and not comparative advantage.d. "True" scotch whiskey can only come from Scotland. The production of scotch whiskeyrequires a technique known to skilled distillers who are concentrated in the region. Also, soil and climactic conditions are favorable for grains used in local scotch production. This reflects comparative advantage.e. France has a particular blend of climactic conditions and land that is difficult to reproduce elsewhere. This generates a comparative advantage in wine production.6. There are some shops in Japan that sell Japanese goods imported back from the UnitedStates at a discount over the prices charged by other Japanese shops. How is this possible?The Japanese producers employ price discrimination across United States and Japanesemarkets, so that the goods sold in the United States are much cheaper than those sold in Japan. It may be profitable for other Japanese to purchase these goods in the United States, incur any tariffs and transportation costs, and resell the goods in Japan. Clearly, the price differential across markets may lead to such profitable chance.7. Consider a situation similar to that in Figure 6-9, in which two countries that canproduce a good are subject to forward-falling supply curves. In this case, however, suppose that the two countries have the same costs, so that their supply curves are identical.a. What would you expect to be the pattern of international specialization and trade?What would determine who produces the good?Suppose two countries that can produce a good are subject to forward-falling supply curves and are identical countries with identical curves. If one country starts out as a producer of a good, i.e. it has a head start even as a matter of historical accident, then all production will occur in that particular country and it will export to the rest of the world. b. What are the benefits of international trade in this case? Do they accrue only to thecountry that gets the industry?Consumers in both countries will pay a lower price for this good when externaleconomies are maximized through trade and all production is located in a single market. In the present example, no single country has a natural cost advantage or is worse off than it would be under autarky.8. It is fairly common for an industrial cluster to break up and for production to move tolocations with lower wages when the technology of the industry is no longer rapidly improving —when it is no longer essential to have the absolutely most modern machinery, when the need for highly skilled workers has declined, and when being at the cutting edge of innovation conveys only a small advantage. Ex plain this tendency of industrial clusters to break up in terms of the theory of external economies.External economies are important for firms as technology changes rapidly and as the“cutting edge” moves quickly with frequent innovations. As this pr ocess slows, manufacturing becomes more normal and standard and there is less advantage brought by external economies. Instead, firms look for low cost production locations. Since external economies are no longer important, firms find little advantage in being clustered and it is likely that low-wage locations will be chosen.chapter 81. The import demand equation, MD , is found by subtracting the home supply equation from the home demand equation. This results in MD = 80 - 40 x P . Without trade, domestic prices Q P,CD AC AC External Economics and Specializationand quantities adjust such that import demand is zero. Thus, the price in the absence of trade is 2.2. a. Foreign's export supply curve, XS , is XS = -40 + 40 x P . In the absence of trade, the price is 1.b. When trade occurs export supply is equal to import demand, XS = MD . Thus, using theequations from problems 1 and 2a, P = 1.50, and the volume of trade is 20.3. a. The new MD curve is 80 - 40 x (P+t) where t is the specific tariff rate, equal to 0.5. (Note: in solving these problems you should be careful about whether a specific tariff or ad valorem tariff is imposed. With an ad valorem tariff, the MD equation would be expressed as MD =80-40 x (1+t)P). The equation for the export supply curve by the foreign country is unchanged. Solving, we find that the world price is $1.25, and thus the internal price at home is $1.75. The volume of trade has been reduced to 10, and the total demand for wheat at home has fallen to 65 (from the free trade level of 70). The total demand for wheat in Foreign has gone up from 50 to 55.b. andc. The welfare of the home country is best studied using the combined numerical andgraphical solutions presented below in Figure 8-1.P T =1.7550556070QuantityPrice P W =1.50P T*=1.25where the areas in the figure are:a: 55(1.75-1.50) -.5(55-50)(1.75-1.50)=13.125b: .5(55-50)(1.75-1.50)=0.625c: (65-55)(1.75-1.50)=2.50d: .5(70-65)(1.75-1.50)=0.625e: (65-55)(1.50-1.25)=2.50Consumer surplus change: -(a+b+c+d)=-16.875. Producer surplus change: a=13.125. Government revenue change: c+e=5. Efficiency losses b+d are exceeded by terms of trade gain e. [Note: in the calculations for the a, b, and d areas a figure of .5 shows up. This is because we are measuring the area of a triangle, which is one-half of the area of the rectangle defined by the product of the horizontal and vertical sides.]4. Using the same solution methodology as in problem 3, when the home country is very small relative to the foreign country, its effects on the terms of trade are expected to be much less. The small country is much more likely to be hurt by its imposition of a tariff. Indeed, this intuition is shown in this problem. The free trade equilibrium is now at the price $1.09 and the trade volume is now $36.40.With the imposition of a tariff of 0.5 by Home, the new world price is $1.045, the internal homeprice is $1.545, home demand is 69.10 units, home supply is 50.90 and the volume of trade is 18.20. When Home is relatively small, the effect of a tariff on world price is smaller than when Home is relatively large. When Foreign and Home were closer in size, a tariff of .5 by home lowered world price by 25 percent, whereas in this case the same tariff lowers world price by about 5 percent. The internal Home price is now closer to the free trade price plus t than when Home was relatively large. In this case, the government revenues from the tariff equal 9.10, the consumer surplus loss is 33.51, and the producer surplus gain is 21.089. The distortionary losses associated with the tariff (areas b+d) sum to 4.14 and the terms of trade gain (e) is 0.819. Clearly, in this small country example the distortionary losses from the tariff swamp the terms of trade gains. The general lesson is the smaller the economy, the larger the losses from a tariff since the terms of trade gains are smaller.5. The effective rate of protection takes into consideration the costs of imported intermediate goods. In this example, half of the cost of an aircraft represents components purchased from other countries. Without the subsidy the aircraft would cost $60 million. The European value added to the aircraft is $30 million. The subsidy cuts the cost of the value added to purchasers of the airplane to $20 million. Thus, the effective rate of protection is (30 - 20)/20 = 50%.6. We first use the foreign export supply and domestic import demand curves to determine the new world price. The foreign supply of exports curve, with a foreign subsidy of 50 percent per unit, becomes XS = -40 + 40(1+0.5) x P. The equilibrium world price is 1.2 and the internal foreign price is 1.8. The volume of trade is 32. The foreign demand and supply curves are used to determine the costs and benefits of the subsidy. Construct a diagram similar to that in the text and calculate the area of the various polygons. The government must provide (1.8 - 1.2) x 32 = 19.2 units of output to support the subsidy. Foreign producers surplus rises due to the subsidy by the amount of 15.3 units of output. Foreign consumers surplus falls due to the higher price by7.5 units of the good. Thus, the net loss to Foreign due to the subsidy is 7.5 + 19.2 - 15.3 = 11.4 units of output. Home consumers and producers face an internal price of 1.2 as a result of the subsidy. Home consumers surplus rises by 70 x .3 + .5 (6x.3) = 21.9 while Home producers surplus falls by 44 x .3 + .5(6 x .3) = 14.1, for a net gain of 7.8 units of output.7. At a price of $10 per bag of peanuts, Acirema imports 200 bags of peanuts. A quota limiting the import of peanuts to 50 bags has the following effects:a. The price of peanuts rises to $20 per bag.b. The quota rents are ($20 - $10) x 50 = $500.c. The consumption distortion loss is .5 x 100 bags x $10 per bag = $500.d. The production distortion loss is .5 x50 bags x$10 per bag = $250.。
【名师精品】克鲁格曼国际经济学答案.doc
Chapter31. In1986,thepriceofoilonworldmarketsdroppedsharplR.SincetheUnitedStatesisanoil-importingcountrR,thiswaswidelRregardedasgoodfortheU.S.economR.RetinTeRa sandLouisiana1986wasaRearofeconomicdecline.WhR?ItcandeducethatTeRasandLouisianaareoil-producingstatesofUnitedStates.Sowhen thepriceofoilonworldmarketsdeclined,therealwageofthisindustrRfellintermsofo thergoods.Thismightbethereasonofeconomicdeclineinthesetwostatesin1986.2。
AneconomRcanproducegood1usinglaborandcapitalandgood2usinglaborandland.Thetotal supplRoflaboris100units.GiventhesupplRofcapital,theoutputsofthetwogoodsdependsonlaborinputasfollows:ToanalRzetheeconomR ’sproductionpossibilitRfrontier,considerhowtheoutputm iRchangesaslaborisshiftedbetweenthetwosectors.a. Graphtheproductionfunctionsforgood1andgood2.),(),(22221111L K Q Q L K Q Q ==b.ThePPFiscurvedduetodecliningmarginalproductoflaborineachgood.ThetotallaborsupplRisfiRed.SoasL 1rises,MPL 1falls;correspondinglR,asL 2falls,MPL 2rises.SoPPgetss teeperaswemovedownittotheright.2. Themarginalproductoflaborcurvescorrespondingtotheproductionfunctionsinprob Q 1 Q 2 L 1 L 2 PPF ),(2222L K Q Q =),(1111L K Q Q =10010025.138.148.657.56673.680.787.493.91005060708090100Labor Input for Good 1Output Production Function for Good 2039.852.561.869.375.881.586.791.495.510001020304050607080901000102030405060708090100Labor Input for Good 2Outputlem2areasfollows:a. Supposethatthepriceofgood2relativetothatofgood1is2.DeterminegraphicallRthewagerateandtheallocationoflaborbetweenthetwosectors.WiththeassumptionthatlaborisfreelRmobilebetweensectors,itwillmovefromth elow-wagesectortothehigh-wagesectoruntilwagesareequalized.Soinequilibri um,thewagerateisequaltothevalueoflabor ’smarginalproduct.2/122211=⨯=⨯P P P MPL P MPLTheabscissaofpointofintersectionillustratedaboveshouldbebetween(20,30).SinceweonlRhavetofindouttheapproRimateanswer,linearfunctioncouldbeemplo Red.ThelaborallocationbetweenthesectorsisapproRimatelRL 1=27andL 2=73.Thewager ateisapproRimatelR0.98.b. Usingthegraphdrawnforproblem2,determinetheoutputofeachsector.ThenconfirmgraphicallRthattheslopoftheproductionpossibilitRfrontieratthatpointequ alstherelativeprice.TherelativepriceisP 2/P 1=2andwehavegottheapproRimatelaborallocation,sowecanemploRthelinearfunctionagaintocalculatetheapproRimateoutputofeachsector:Q 1=44andQ 2=90.c. Supposethattherelativepriceofgood2fallsto1.Repeat(a)and(b).Therelativedeclineinthepriceofgood2causedlabortobereallocated:laborisdra wnoutofproductionofgood2andentersproductionofgood1(Ｌ1=62,L 2=38).Thisalsoleadstoanoutputadjustment,thatis,productionofgood2fal lsto68unitsandproductionofgood1risesto76units.AndthewagerateisapproRimat elRequalto0.74.Q 1 L 1 L 2PPF),(1111L K Q Q =10010021-=sloped. Calculatetheeffectsofthepricechangeontheincomeofthespecificfactorsinsectors1and2.WiththerelativepricechangefromP 2/P 1=2toP 2/P 1=1,thepriceofgood2hasfallenbR 50percent,whilethepriceofgood1hasstaRedthesame.Wageshavefallentoo,butbR lessthanthefallinP 2(wagesfellapproRimatelR25percent).Thus,therealwagerel ativetoP 2actuallRriseswhilerealwagerelativetoP 1falls.Hence,todetermineth ewelfareconsequenceforworkers,theinformationabouttheirconsumptionshares ofgood1andgood2isneeded.3. IntheteRtweeRaminedtheimpactsofincreasesinthesupplRofcapitalandland.Butwhatifthemobilefactor,labor,increasesinsupplR?a ． AnalRzethequalitativeeffectsofanincreaseinthesupplRoflaborinthespecificfactorsmodel,holdingthepriceofbothgoodsconstant.ForaneconomRproducingtwogoods,RanR,withlabordemandsreflectedbRtheirmargi nalrevenueproductcurves,thereisaninitialwageofw 1andaninitiallaborallocat ionofL R =O R AandL R =O R A.WhenthesupplRoflaborincreases,therightboundarRofthedi agramillustratedbelowpushedouttoO R ’.ThedemandforlaborinsectorRispulledrig htwardwiththeboundarR.Thenewintersectionofthelabordemandcurvesshowsthatl aboreRpandsinbothsectors,andthereforeoutputofbothRandRalsoeRpand.Therela tiveeRpansionofoutputisambiguous.Wagespaidtoworkersfall. Q 1 L 1 L 2PPF),(1111L K Q Q =1001001-=slope 21-=slopeb ． GraphtheeffectontheequilibriumforthenumericaleRampleinproblems2and3,givenarelativepriceof1,whenthelaborforceeRpandsfrom100to140.Withthelawofdiminishingreturns,thenewproductionpossibilitRfrontierismore concaveandsteeper(flatter)attheendswhentotallaborsupplRincreases.L 1increaseto90from62andL 2increasesto50from38.Wagesdeclinefrom0.74to0.60.T 2=77.Chapter41． IntheUnitedStateswherelandischeap,theratiooflandtolaborusedincattlerisingishigherthanthatoflandusedinwheatgrowing.Butinmorecrowdedcountries,wherelandi seRpensiveandlaborischeap,itiscommontoraisecowsbRusinglesslandandmorelabort hanAmericansusetogrowwheat.CanwestillsaRthatraisingcattleislandintensivecom paredwithfarmingwheat?WhRorwhRnot?Q 1 Q 2L 1 L 2PPF),(2222L K Q Q =),(1111L K Q Q =140140100100W x x P MPL ⨯yy P MPL ⨯1w 2w y yThedefinitionofcattlegrowingaslandintensivedependsontheratiooflandtolaborusedinproduction,notontheratiooflandorlabortooutput.Theratiooflandtolaborincattle eRceedstheratioinwheatintheUnitedStates,implRingcattleislandintensiveintheU nitedStates.Cattleislandintensiveinothercountriestooiftheratiooflandtolabor incattleproductioneRceedstheratioinwheatproductioninthatcountrR.Thecomparis onbetweenanothercountrRandtheUnitedStatesislessrelevantforansweringthequest ion.2． Supposethatatcurrentfactorpricesclothisproducedusing20hoursoflaborforeachacreofland,andfoodisproducedusingonlR5hoursoflaborperacreofland.a. SupposethattheeconomR ’stotalresourcesare600hoursoflaborand60acresofland.Usingadiagramdeterminetheallocationofresources.5TF LF /TF LF /QF)(TF / /QF)(LF aTF / aLF 20TC LC /TC LC /QC)(TC / /QC)(LC aTC / aLC =⇒===⇒==WecansolvethisalgebraicallRsinceL=LC+LF=600andT=TC+TF=60. ThesolutionisLC=400,TC=20,LF=200andTF=40.b. NowsupposethatthelaborsupplRincreasefirstto800,then1000,then1200hours.UsingadiagramlikeFigure4-6,traceoutthechangingallocationofresources. tion).specializa (complete 0.LF 0,TF 1200,LC 60,TC :1200L 66.67LF 13.33,TF 933.33,LC 46.67,TC :1000L 133.33LF 26.67,TF 666.67,LC 33.33,TC :800L ===============Labor Land Cloth FoodLCLF TCTFc. WhatwouldhappenifthelaborsupplRweretoincreaseevenfurther?Atconstantfactorprices,somelaborwouldbeunused,sofactorpriceswouldhaveto change,ortherewouldbeunemploRment.3. “Theworld ’spoorestcountriescannotfindanRthingtoeRport.Thereisnoresourcethatisabundant —certainlRnotcapitalorland,andinsmallpoornationsnotevenlaboris abundant.”Discuss.Thegainsfromtradedependoncomparativeratherthanabsoluteadvantage.Astopoorcou ntries,whatmattersisnottheabsoluteabundanceoffactors,buttheirrelativeabunda nce.Poorcountrieshaveanabundanceoflaborrelativetocapitalwhencomparedtomored evelopedcountries.4. bormovement —whichmostlRrepresentsblue-collarworkersratherthanprofessionalsandhighlReducatedworkers —hastraditionallRfavoredlimitsonimports formless-affluentcountries.IsthisashortsightedpolicRofarationaloneinviewof theinterestsofunionmembers?Howdoestheanswerdependonthemodeloftrade?IntheRicardo ’smodel,laborgainsfromtradethroughanincreaseinitspurchasingpowe r.Thisresultdoesnotsupportlaboruniondemandsforlimitsonimportsfromlessafflue ntcountries.IntheImmobileFactorsmodellabormaRgainorlosefromtrade.Purchasingpowerinterms ofonegoodwillrise,butintermsoftheothergooditwilldecline.TheHeckscher-OhlinmodeldirectlRdiscussesdistributionbRconsideringtheeffects oftradeontheownersoffactorsofproduction.IntheconteRtofthismodel,borlosesfromtradesincethisgrouprepresentstherelativelRscarcefactorsinth iscountrR.TheresultsfromtheHeckscher-Ohlinmodelsupportlaboruniondemandsfori mportlimits.5. ThereissubstantialinequalitRofwagelevelsbetweenregionswithintheUnitedStates.ForeRample,wagesofmanufacturingworkersinequivalentjobsareabout20percentl owerintheSoutheastthantheRareintheFarWest.WhichoftheeRplanationsoffailureo ffactorpriceequalizationmightaccountforthis?Howisthiscasedifferentfromthed ivergenceofwagesbetweentheUnitedStatesandMeRico(whichisgeographicallRclose rtoboththeU.S.SoutheastandtheFarWestthantheSoutheastandFarWestaretoeachoth er)?WhenweemploRfactorpriceequalization,weshouldpaRattentiontoitsconditions:bot hcountries/regionsproducebothgoods;bothcountrieshavethesametechnologRofprod uction,andtheabsenceofbarrierstotrade.InequalitRofwagelevelsbetweenregionsw Labor Land Cloth Food0l 800 0l 1000 0l 1200ithintheUnitedStatesmaRcausedbRsomeorallofthesereasons.ActuallR,thebarrierstotradealwaRseRistintherealworldduetotransportationcost s.AndthetradebetweenU.S.andMeRico,bRcontrast,issubjecttolegallimits;togethe rwithculturaldifferencesthatinhibittheflowoftechnologR,thismaReRplainwhRthe differenceinwageratesissomuchlarger.6.ERplainwhRtheLeontiefparadoRandthemorerecentBowen,Leamer,andSveikauskasresultsreportedintheteRtcontradictthefactor-proportionstheorR.ThefactorproportionstheorRstatesthatcountrieseRportthosegoodswhoseproductio nisintensiveinfactorswithwhichtheRareabundantlRendowed.OnewouldeRpecttheUni tedStates,whichhasahighcapital/laborratiorelativetotherestoftheworld,toeRpo rtcapital-intensivegoodsiftheHeckscher-OhlintheorRholds.Leontieffoundthatth eUnitedStateseRportedlabor-intensivegoods.Bowen,LeamerandSveikauskasfoundth atthecorrelationbetweenfactorendowmentandtradepatternsisweakfortheworldasaw hole.ThedatadonotsupportthepredictionsofthetheorRthatcountries'eRportsandim portsreflecttherelativeendowmentsoffactors.7.InthediscussionofempiricalresultsontheHeckscher-Ohlinmodel,wenotedthatrecentworksuggeststhattheefficiencRoffactorsofproductionseemstodifferinternati onallR.ERplainhowthiswouldaffecttheconceptoffactorpriceequalization. IftheefficiencRofthefactorsofproductiondiffersinternationallR,thelessonsoftheHe ckscher-OhlintheorRwouldbeappliedto“effectivefactors”whichadjustforthediffe rencesintechnologRorworkerskillsorlandqualitR(foreRample).Theadjustedmodelh asbeenfoundtobemoresuccessfulthantheunadjustedmodelateRplainingthepatternof tradebetweencountries.Factor-priceequalizationconceptswouldapplRtotheeffect ivefactors.AworkerwithmoreskillsorinacountrRwithbettertechnologRcouldbecons ideredtobeequaltotwoworkersinanothercountrR.Thus,thesinglepersonwouldbetwoe ffectiveunitsoflabor.Thus,theonehigh-skilledworkercouldearntwicewhatlowersk illedworkersdoandthepriceofoneeffectiveunitoflaborwouldstillbeequalized.。
《国际经济学》教师手册及课后习题答案(克鲁格曼,第六版)imch10
HAPTER 10TRADE POLICY IN DEVELOPING COUNTRIESChapter OrganizationImport-Substituting IndustrializationThe Infant Industry ArgumentPromoting Manufacturing Through ProtectionismCase Study: The End of Import Substitution in ChileResults of Favoring Manufacturing: Problems of Import-Substituting Industrialization Problems of the Dual EconomyThe Symptoms of DualismCase Study: Economic Dualism in IndiaDual Labor Markets and Trade PolicyTrade Policy as a Cause of Economic DualismExport-Oriented Industrialization: The East Asian MiracleThe Facts of Asian GrowthTrade Policy in the HPAEsIndustrial Policy in the HPAEsBox: China’s BoomOther Factors in GrowthSummaryCHAPTER OVERVIEWThe final two chapters on international trade, Chapters 10 and 11, discuss trade policy considerations in the context of specific issues. Chapter 10 focuses on the use of trade policy in developing countries and Chapter 11 focuses on new controversies in trade policy.While there is great diversity among the developing countries, they share some common policy concerns. These include the development of domestic manufacturing industries, the uneven degree of development within the country, and the desire to foster economic growth and improve livingstandards. This chapter discusses both the successful and unsuccessful trade policy strategies which have been applied by developing countries in attempts to address these concerns.Many developing countries pose the creation of a significant manufacturing sector as a key goal of economic development. One commonly voiced argument for protecting manufacturing industries is the infant industry argument, which states that developing countries have a potential comparative advantage in manufacturing and can realize that potential through an initial period of protection. This argument assumes market failure in the form of imperfect capital markets or the existence of externalities in production: such a market failure makes the social return to production higher than the private return. This implies that a firm will not be able to recapture rents or profits that are in line with the contribution to welfare made by the product or industry establishment of the firm. Without some government support, the argument goes, the amount of investment which will occur in this industry will be less than socially optimal levels.Given these arguments, many nations have attempted import substitution led industrialization. In the 1950s and 1960s the strategy was quite popular and did lead to a dramatic reduction in imports in some countries. The overall result, though, was not a success. The infant industry argument did not always hold, as protection could let young industries survive, but could not make them efficient. By the late 1980s, most countries had shifted away from the strategy, and the chapter includes a case study of Chile’s change from import substitution to a more open strategy.Development often proceeds unevenly and results in a dual economy consisting of a modern sector and a traditional sector. The modern sector typically differs from the traditional sector in that it has a higher value of output per worker, higher wages, higher capital intensity, lower returns to capital, and persistent unemployment. For example, in India less than one percent of the population is employed in the manufacturing sector but this sector produces 15 percent of GNP. Wages in Indian manufacturing are six times those in agriculture.Some argue that the existence of wage differentials in a dual economy demonstrate the failure of labor markets to work well. Society would benefit if workers moved from agriculture to manufacturing. A first best policy addresses the wage differential directly. Protectionism may be a second best solution, but one with the undesirable consequences of inducing both capital and labor into manufacturing. This raises the already too high capital intensity in the manufacturing sector. Further, an increase in the number of urban manufacturing jobs may exacerbate the problems of urban unemployment through migration from the countryside to the cities. This is a key theme of theHarris-Todaro model. Thus, it is possible that the medicine of trade policies worsens the illness of dualism.The East Asian “miracle” of the high-performing Asian economies (HPAEs) provides a striking and controversial example of export-oriented industrialization. While these countries encountered difficulties in the late 1990s (see Chapter 22), this chapter focuses on their spectacular growth from the 1960s to 1990s. It is acknowledged that the growth was extremely impressive; the controversy is over the source of the success in these countries. Some observers argue that although these countries do not practice free trade, they have lower rates of protection (and more outward orientation) than other developing countries. Other observers argue that the interventionist industrial policies pursued by the HPAEs have been the reason for success, and outward orientation is just a by-product of active rather than passive government involvement in industry. Still others argue that high rates of domestic savings and rapid improvements in education are behind the stunning growth performance.ANSWERS TO TEXTBOOK PROBLEMS1. The Japanese example gives pause to those who believe that protectionism is alwaysdisastrous. However, the fact of Japanese success does not demonstrate that protectionist trade policy was responsible for that success. Japan was an exceptional society that had emerged into the ranks of advanced nations before World War II, and was recovering from wartime devastation. It is arguable that economic success would have come anyway, so that the apparent success of protection represents a "pseudo-infant-industry" case of the kind discussed in the text.2. a. The initial high costs of production would justify infant industry protection if the costs to thesociety during the period of protection were less than the future stream of benefits from a mature, low cost industry.b. An individual firm does not have an incentive to bear development costs itself for an entireindustry when these benefits will accrue to other firms. There is a stronger case for infant industry protection in this instance because of the existence of market failure in the form of the appropriability of technology.3. There are larger markets in larger countries like Brazil and industries which benefit fromimport substituting policies could realize economy of scale advantages there which would not be available to industries producing solely for the market of Ghana.4. The value of the marginal product of labor in the production of food is 9 x $10 = $90.a. The wage will be equated in each sector when there are no distortions. This occurs whenthere are 8 workers in manufacturing and 12 in food production. The wage of all workers will be $90. The output of each sector can be found by calculating the area under the marginal product of labor curves. This curve is a horizontal line for food, so output in this sector is 12 x 9 = 108. Summing the area under the MPL curve for manufacturing up to 8 workers results in output of 110.b. Manufacturing output shrinks to 3 workers, and there are 17 workers in the food sector.Food output now equals 153 while manufacturing output equals 54. The cost of the distortion equals the value of output lost, which is $110.c. The probability of being employed is 1 - (n+3/n) = 3/n where n is the number of city workers.Workers will migrate to the city until the wage times the probability of being employed equals the wage offered in the rural area with certainty. There will be 5 workers in manufacturing,15 workers in agriculture, and 2 unemployed workers. The output of the manufacturingsector is 54 and for food is 135.5. Under these circumstances, workers are both "pulled" into the urban, "modern" sector by thelure of high wages and "pushed" from the rural areas due to stagnant conditions in the agricultural sector. To correct this problem of the bias toward the urban-manufacturing sector, explicit attention should be paid to making the agricultural sector more rewarding, In order to retain labor, the agricultural sector might be provided with wage subsidies so that the rural-urban wage gap is reduced. Policies can also be targeted at promoting light rural enterprise and agricultural investment which would increase wages through increasing worker productivity. In addition, development of the rural infrastructure and social services might increase the relative attractiveness of the countryside.6. Import quotas on capital-intensive goods and subsidies for the import of capital equipmentfoster the development of a capital intensive sector, and thus of a dual economy. If the capital-intensive sector pays high wages relative to the traditional sector, the result may be rural-urban migration and the emergence of persistent urban unemployment.FURTHER READINGSJagdish Bhagwati, ed.. The New International Economic Order. Cambridge: MIT Press, 1977.Jagdish Bhagwati and T.N. Srinivasan. "Trade Policy and Development," in Rudiger Dornbusch and Jacob A. Frenkel, eds.. International Economic Policy: Theory and Evidence. Baltimore: Johns Hopkins University Press, 1979, pp. 1-35.W.M. Corden. Trade Policy and Economic Welfare. Oxford: Clarendon Press, 1974.Anne O. Krueger, "Trade Policies in Developing Countries," in Ronald W. Jones and Peter B. Kenen, eds.. Handbook of International Economics. Vol. 1. Amsterdam: North-Holland, 1984. W. Arthur Lewis. The Theory of Economic Development. Homewood, Illinois: Irwin, 1955.I.M.D. Little. Economic Development. New York: Basic Books, 1982.I.M.D. Little, Tibor Scitovsky, and Maurice Scott. Industry and Trade in Some Developing Countries. New York: Oxford University Press, 1970.Dani Rodrik. "Imperfect Competition, Scale Economies and Trade Policies in Developing Countries", in Robert E. Baldwin, ed.. Trade Policy Issues and Empirical Analysis. Chicago: Univ. of Chicago Press, 1988.World Bank. The East Asian Miracle: Economic Growth and Public Policy. Oxford: Oxford University Press, 1993.World Bank. World Development Report 1991: The Challenge of Development. Washington, D.C.: World Bank, 1991.Alwyn Young. “A Tale of Two Cities: Factor Accumulation and Technical Change in Hong Kong and Singapore”, in O.J. Blanchard and S. Fischer, eds. NBER Macroeconomics Annual 1992.. Alwyn Young. “The Tyranny of Numbers: Confronting the Statistical Realities of the East Asian Growth Experience,” Quarterly Journal of Economics 101 (August 1994) pp.641-80.。
大学教材课后习题答案大全
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国际经济学克鲁格曼_教材答案解析
Problems and Answers to Chapter 2Q1: Canada and Australia are (mainly) English-speaking countries with populations that are not too different in size (Canada’s is 60 percent larger). But Canadian trade is twice as large, relative to GDP, as Australia’s. Why should this be the case?加拿大和澳大利亚都是英语国家，两国的人口规模也相当（加拿大多60%），但是相对各自的GDP而言，加拿大的贸易额是澳大利亚的两倍，为什么如此？A1:According to Gravity Model, GDP is not the only factor to explain the volume oftrade between two countries, because distance is also an important factor. Consideringthe distance, the transportation cost of Australia is relatively higher than that ofCanada, so the attractiveness of trade is reduced. However, Canada is close to theUSA which is a large economy while Australia is not close to any large economy,making Canada more open while Australia is more autarky.GDP 不是解释两国贸易量的唯一重要因素，距离也是至关重要的因素之一。
《国际经济学》克鲁格曼(第六版)习题答案imsect2
OVERVIEW OF SECTION II: INTERNATIONAL TRADE POLICYSection II of the text is comprised of four chapters:Chapter 8 The Instruments of Trade PolicyChapter 9 The Political Economy of Trade PolicyChapter 10 Trade Policy in Developing CountriesChapter 11 Strategic Trade Policies in Advanced CountriesSECTION II OVERVIEWTrade policy issues figure prominently in current political debates and public policy discussions. The first two chapters of this section of the text are concerned with the instruments of trade policy and the arguments for free trade and managed trade. The second two chapters consider these concepts in the context of specific sets of countries that face common problems. Throughout, the use of case studies provides the student with real world examples that clearly illustrate the theoretical arguments.Chapter 8 discusses various instruments of trade policy including tariffs, quotas, voluntary export restraints, and local content requirements. The effects of these policies on prices and trade volumes are determined in the context of a partial equilibrium framework. The chapter reviews the analytical tools of consumer and producer surplus, and uses these tools to consider the welfare effects of various protectionist measures. The specific incidents of trade restrictions presented as case studies include import quotas on sugar entering United States markets, voluntary export restraints on Japanese autos, and oil import quotas.Chapter 9 presents the set of ideas known as the political economy of trade theory. These ideas enable you to understand why certain trade restrictions exist, despite the force of general economic arguments which suggest that they reduce aggregate welfare. Possible motivations for trade restrictions are identified as those which increase national welfare, such as the optimum tariff, and those which foster either income redistribution or the preservation of status quo. While sometimes politically popular, these motivations for trade restrictions ignore the possibility of retaliation and usually fail tests based upon basic welfare analysis. Trade agreements of the 1990s are discussed, including the Uruguay Round, and distinctionsare made between Free Trade Areas and Customs Unions as well as between trade creation and trade diversion.Chapter 10 considers the possible uses of trade policies to promote the growth of developing economies. The chapter reviews the relative successes of different development strategies. It examines arguments for and the results of import-substituting industrialization. The phenomenon of economic dualism, referring to the coexistence of capital intensive industrial sectors and low-wage traditional sectors, and of uneven development are considered. The chapter concludes with a discussion of export led growth and the experience of the high performing Asian economies.Chapter 11 considers recent controversies in trade policy. The first part of the chapter considers the notion of strategic trade policy, which first arose in the 1990s. Strategic trade policy refers to the use of trade (and other) tools for channeling resources to sectors targeted for growth by industrial country governments. The chapter presents some commonly voiced arguments for intervention in particular sectors of the economy, and then shows how these arguments are critically flawed. The second part of the chapter introduces more sophisticated arguments for strategic trade policy. The most persuasive of these is the existence of some form of market failure. The second part of the chapter considers the impact of rising trade on workers in developing countries, and more broadly, the debate over globalization. This debate has been argued in academia and policy circles, but also on the streets of Seattle, Genoa, and other cities hosting global economic summits.。
克鲁格曼《国际经济学》(国际金融)习题答案要点
《国际经济学》（国际金融）习题答案要点第12章 国民收入核算与国际收支1、如问题所述，GNP 仅仅包括最终产品和服务的价值是为了避免重复计算的问题。
在国民收入账户中，如果进口的中间品价值从GNP 中减去，出口的中间品价值加到GNP 中，重复计算的问题将不会发生。
例如：美国分别销售钢材给日本的丰田公司和美国的通用汽车公司。
其中出售给通用公司的钢材，作为中间品其价值不被计算到美国的GNP 中。
出售给日本丰田公司的钢材，钢材价值通过丰田公司进入日本的GNP ，而最终没有进入美国的国民收入账户。
所以这部分由美国生产要素创造的中间品价值应该从日本的GNP 中减去，并加入美国的GNP 。
2、（1）等式12-2可以写成()()p CA S I T G =-+-。
美国更高的进口壁垒对私人储蓄、投资和政府赤字有比较小或没有影响。
（2）既然强制性的关税和配额对这些变量没有影响，所以贸易壁垒不能减少经常账户赤字。
不同情况对经常账户产生不同的影响。
例如，关税保护能提高被保护行业的投资，从而使经常账户恶化。
（当然，使幼稚产业有一个设备现代化机会的关税保护是合理的。
）同时，当对投资中间品实行关税保护时，由于受保护行业成本的提高可能使该行业投资下降，从而改善经常项目。
一般地，永久性和临时性的关税保护有不同的效果。
这个问题的要点是：政策影响经常账户方式需要进行一般均衡、宏观分析。
3、（1）、购买德国股票反映在美国金融项目的借方。
相应地，当美国人通过他的瑞士银行账户用支票支付时，因为他对瑞士请求权减少，故记入美国金融项目的贷方。
这是美国用一个外国资产交易另外一种外国资产的案例。
（2）、同样，购买德国股票反映在美国金融项目的借方。
当德国销售商将美国支票存入德国银行并且银行将这笔资金贷给德国进口商（此时，记入美国经常项目的贷方）或贷给个人或公司购买美国资产（此时，记入美国金融项目的贷方）。
最后，银行采取的各项行为将导致记入美国国际收支表的贷方。
国际经济学题库(克鲁格曼版)
《国际贸易》习题库——克鲁格曼版一、名词解释1、绝对优势2、比较优势3、机会成本4、贸易条件5、要素禀赋6、劳动密集型产品7、资本密集型产品8、技术密集型产品9、规模经济 10、产业内贸易 11、代表性需求12、边际物质产品与边际价值产品13、专门生产要素与共同生产要素14产品生命周期理论15、外汇 16、汇率 17、汇率制度 18、即期外汇业务19、远期外汇业务 20、套利业务 21、一价定律22、国际收支 23、马歇尔一勒纳条件 24、货币贬值的J型曲线效应二、判断以下各题的对错，并说明理由。
1、当开放贸易时，所有消费者的境况都会得到改善。
2、根据简单贸易模型，在贸易发生之前，如果各国的某种商品价格相同，这些国家之间就不会有交换该种商品的动机。
·3、如果一国中某生产者通过贸易能使自己的境况得到改善，那么，该国中所有的生产者都会通过贸易来改善自己的境况。
4、在两国间均衡贸易价格条件下，一国对某种商品的过度供给必然与另一国对该商品的过度需求相等。
5、不存在free lunch，但却存在free trade。
6、一国即便在某种商品的生产上具有绝对劣势，它也可以在该商品的生产上具有相对优势。
7、根据H—O理论，一国如果比他国拥有更多英亩的土地，该国便是“土地丰富”的国家。
8、在成本递增的条件下，各国并不一定要完全专业化于一种商品的生产。
9、H—O理论假设各国拥有相同的商品偏好。
10、我们或许可以通过更为细分化的生产要素定义而解决Leontief Paradox。
11、Stolper-Samuelson定理认为，贸易将使丰富要素的所有者得到更低的实际收入，同时使稀缺要素的所有者得到更高的实际收入。
12、如果各国的生产技术相同，贸易便不会使生产要素价格均等化。
13、一国的非技术性工人会比技术性工人更加反对贸易自由化。
14、“大”国可投资发展进口替代产业而不是出口产业，进而改善本国的贸易条件。
15、按照定义，小国的经济增长将不会使贸易条件发生变化。
《国际经济学》教师手册及课后习题答案(克鲁格曼,第六版)imch06
HAPTER 6ECONOMIES OF SCALE, IMPERFECT COMPETITION, AND INTERNATIONAL TRADEChapter OrganizationEconomies of Scale and International Trade: An OverviewEconomies of Scale and Market StructureThe Theory of Imperfect CompetitionMonopoly: A Brief ReviewMonopolistic CompetitionLimitations of the Monopolistic Competition ModelMonopolistic Competition and TradeThe Effects of Increased Market SizeGains from an Integrated Market: A Numerical ExampleEconomies of Scale and Comparative AdvantageThe Significance of Intraindustry TradeWhy Intraindustry Trade MattersCase Study: Intraindustry Trade in Action: The North American Auto Pact DumpingThe Economics of DumpingCase Study: AntiDumping as ProtectionReciprocal DumpingThe Theory of External EconomiesSpecialized SuppliersLabor Market PoolingKnowledge SpilloversExternal Economies and Increasing ReturnsExternal Economies and International TradeExternal Economies and the Pattern of TradeTrade and Welfare with External EconomiesBox: Tinseltown EconomicsDynamic Increasing ReturnsSummaryAppendix: Determining Marginal RevenueCHAPTER OVERVIEWIn previous chapters, trade between nations was motivated by their differences in factor productivity or relative factor endowments. The type of trade which occurred, for example of food for manufactures, is based on comparative advantage and is called interindustry trade. This chapter introduces trade based on economies of scale in production. Such trade in similar productions is called intraindustry trade, and describes, for example, the trading of one type of manufactured good for another type of manufactured good. It is shown that trade can occur when there are no technological or endowment differences, but when there are economies of scale or increasing returns in production.Economies of scale can either take the form of 1) external economies whereby the cost per unit depends on the size of the industry but not necessarily on the size of the firm; or as 2) internal economies, whereby the production cost per unit of output depends on the size of the individual firm but not necessarily on the size of the industry. Internal economies of scale give rise to imperfectly competitive markets, unlike the perfectly competitive market structures that were assumed to exist in earlier chapters. This motivates the review of models of imperfect competition, including monopoly and monopolistic competition. The instructor should spend some time making certain that students understand the equilibrium concepts of these models since they are important for the justification of intraindustry trade.In markets described by monopolistic competition, there are a number of firms in an industry, each of which produces a differentiated product. Demand for its good depends on the number of other similar products available and their prices. This type of model is useful for illustrating that trade improves the trade-off between scale and variety available to a country. In an industry described by monopolistic competition, a larger market -- such as that which arises through international trade -- lowers average price (by increasing production and lowering average costs) and makes available for consumption a greater range of goods. While an integrated markets also supports the existence of a larger number of firms in an industry, the model presented in the text does not make predictions about where these industries will be located.It is also interesting to compare the distributional effects of trade when motivated by comparative advantage with those when trade is motivated by increasing returns to scale inproduction. When countries are similar in their factor endowments, and when scale economies and product differentiation are important, the income distributional effects of trade will be small. You should make clear to the students the sharp contrast between the predictions of the models of monopolistic competition and the specific factors and Heckscher-Ohlin theories of international trade. Without clarification, some students may find the contrasting predictions of these models confusing.Another important issue related to imperfectly competitive markets is the practice of price discrimination, namely charging different customers different prices. One particularly controversial form of price discrimination is dumping, whereby a firm charges lower prices for exported goods than for goods sold domestically. This can occur only when domestic and foreign markets are segmented. While there is no good economic justification for the view that dumping is harmful, it is often viewed as an unfair trade practice.The other type of economies of scale, external economies, has very different economic implications than internal economies. Since external economies of scale occur at the industry level rather than the firm level, it is possible for there to be many small competitors in an industry, in contrast to the structure which develops under internal economies of scale. Under external economies, trade may not be beneficial to all countries and there may be some justification for protectionism. Dynamic scale economies, which arise when unit production costs fall with cumulative production over time, rather than with current levels of production, also provide a potential justification for protectionism.ANSWERS TO TEXTBOOK PROBLEMS1. Cases a and d reflect external economies of scale since concentration of the productionof an industry in a few locations reduces the industry's costs even when the scale of operation of individual firms remains small. External economies need not lead to imperfect competition. The benefits of geographical concentration may include a greater variety of specialized services to support industry operations and larger labor markets or thicker input markets. Cases b and c reflect internal economies of scale and occur at the level of the individual firm. The larger the output of a product by a particular firm, the lower its average costs. This leads to imperfect competition as in petrochemicals, aircraft, and autos.2. The profit maximizing output level of a monopolist occurs where marginal revenueequals marginal cost. Unlike the case of perfectly competitive markets, under monopoly marginal revenue is not equal to price. Marginal revenue is always less than price under imperfectly competitive markets because to sell an extra unit of output the firm must lower the price of all units, not just the marginal one.3. By concentrating the production of each good with economies of scale in one countryrather than spreading the production over several countries, the world economy will use the same amount of labor to produce more output. In the monopolistic competition model, such a concentration of labor benefits the host country, which can also capture some monopoly rents, while it may hurt the rest of the world which could then face higher prices on its consumption goods. In the external economies case, such monopolistic pricing behavior is less likely since imperfectly competitive markets are less likely.4. Although this problem is a bit tricky and the numbers don't work out nicely, a solutiondoes exist. The first step in finding the solution is to determine the equilibrium number of firms in the industry. The equilibrium number of firms is that number, n, at which price equals average cost. We know that AC=F/X + c , where F represents fixed costs of production, X represents the level of sales by each firm, and c represents marginal costs. We also know that P=c+ (1/bn), where P and b represent price and the demand parameter. Also, if all firms follow the same pricing rule, then X=S/n where S equals total industry sales. So, set price equal to average cost, cancel out the c's and replace X by S/n. Rearranging what is left yields the formula n2=S/Fb. Substitute in S=900,000+ 1,600,000+ 3,750,000 =6,250,000, F=750,000,000 and b=1/30,000. The numerical answer is that n=15.8 firms. However, since you will never see .8 firms, there will be15 firms that enter the market, not 16 firms since the last firm knows that it can notmake positive profits. The rest of the solution is straight-forward. Using X=S/n, output per firm is 41,666 units. Using the price equation, and the fact that c=5,000, yields an equilibrium price of $7,000.5. a. The relatively few locations for production suggest external economies of scale inproduction. If these operations are large, there may also be large internal economies of scale in production.b. Since economies of scale are significant in airplane production, it tends to be done by asmall number of (imperfectly competitive) firms at a limited number of locations. One such location is Seattle, where Boeing produces.c. Since external economies of scale are significant in semiconductor production,semiconductor industries tend to be concentrated in certain geographic locations. If, for some historical reason, a semiconductor is established in a specific location, the export of semiconductors by that country is due to economies of scale and not comparative advantage.d. "True" scotch whiskey can only come from Scotland. The production of scotchwhiskey requires a technique known to skilled distillers who are concentrated in the region. Also, soil and climactic conditions are favorable for grains used in local scotch production. This reflects comparative advantage.e. France has a particular blend of climactic conditions and land that is difficult toreproduce elsewhere. This generates a comparative advantage in wine production.6. The Japanese producers are price discriminating across United States and Japanesemarkets, so that the goods sold in the United States are much cheaper than those sold in Japan. It may be profitable for other Japanese to purchase these goods in the United States, incur any tariffs and transportation costs, and resell the goods in Japan. Clearly, the price differential across markets must be non-trivial for this to be profitable.7. a. Suppose two countries that can produce a good are subject to forward-falling supplycurves and are identical countries with identical curves. If one country starts out as a producer of a good, i.e. it has a head start even as a matter of historical accident, then all production will occur in that particular country and it will export to the rest of the world.b. Consumers in both countries will pay a lower price for this good when externaleconomies are maximized through trade and all production is located in a single market. In the present example, no single country has a natural cost advantage or is worse off than it would be under autarky.8. External economies are important for firms as technology changes rapidly and as the“cutting edge” moves quickly with frequent innovations. As this process slows, manufacturing becomes more routine and there is less advantage conferred by external economies. Instead, firms look for low cost production locations. Since externaleconomies are no longer important, firms find little advantage in being clustered and it is likely that locations other than the high-wage original locations are chosen.FURTHER READINGSFrank Graham. "Some Aspects of Protection Further Considered." Quarterly Journal of Economics 36 (1923) pp.199-227.Elhanan Helpman and Paul Krugman.Market Structure and Foreign Trade: Increasing Returns, Imperfect Competition, and the International Economy. Cambridge: MIT Press, 1985.Henryk Kierzkowski, ed. Monopolistic Competition and International Trade. Oxford: Clarendon Press, 1984.Staffan Burenstam Linder. An Essay on Trade and Transformation. New York: John Wiley and Sons, 1961.Michael Porter. The Competitive Advantage of Nations. New York: Free Press, 1990. Annalee Saxenian. Regional Advantage. Cambridge: Harvard University Press, 1994.。
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Standard, 1870-1914 The Interwar Years, 1918-1939 The Bretton Woods System and the International Monetary Fund Internal and External Balance Under the Bretton Woods System Analyzing Policy Options Under the Bretton Woods System
Slide 18-10
International Macroeconomic Policy Under the Gold Standard, 1870-1914
Origins of the Gold Standard
• The gold standard had its origin in the use of gold
Copyright © 2003 Pearson Education, Inc. Slide 18-7
Macroeconomic Policy Goals in an Open Economy
• Problems with Excessive Current Account Deficits:
– They sometimes represent temporarily high consumption resulting from misguided government policies. – They can undermine foreign investors’ confidence and contribute to a lending crisis.
• The U.S. Gold Standard Act of 1900 institutionalized
the dollar-gold link.
Copyright © 2003 Pearson Education, Inc. Slide 18-11
International Macroeconomic Policy Under the Gold Standard, 1870-1914
Copyright © 2003 Pearson Education, Inc.
Slide 18-5
Macroeconomic Policy Goals in an Open Economy
Internal Balance: Full Employment and Price-Level
Stability
the current account.
Copyright © 2003 Pearson Education, Inc. Slicroeconomic Policy Under the Gold Standard, 1870-1914
The Price-Specie-Flow Mechanism
• The most important powerful automatic mechanism
that contributes to the simultaneous achievement of balance of payments equilibrium by all countries
– The flows of gold accompanying deficits and surpluses cause price changes that reduce current account imbalances and return all countries to external balance.
Copyright © 2003 Pearson Education, Inc.
Slide 18-8
Macroeconomic Policy Goals in an Open Economy
• Problems with Excessive Current Account
Surpluses:
– They imply lower investment in domestic plant and equipment. – They can create potential problems for creditors to collect their money. – They may be inconvenient for political reasons.
– Prevent substantial movements in aggregate demand relative to its full-employment level. – Ensure that the domestic money supply does not grow too quickly or too slowly.
– The economy’s particular circumstances – Conditions in the outside world – The institutional arrangements governing its economic relations with foreign countries
Copyright © 2003 Pearson Education, Inc.
Slide 18-6
Macroeconomic Policy Goals in an Open Economy
External Balance: The Optimal Level of the Current
Account
External Balance Under the Gold Standard
• Central banks
– Their primary responsibility was to preserve the official parity between their currency and gold. – They adopted policies that pushed the nonreserve component of the financial account surplus (or deficit) into line with the total current plus capital account deficit (or surplus).
• Internal balance
– It requires the full employment of a country’s resources and domestic price level stability.
• External balance
– It is attained when a country’s current account is neither so deeply in deficit nor so strongly in surplus.
Chapter 18
The International Monetary System,1870-1973
Chapter Organization
Macroeconomic Policy Goals in an Open Economy International Macroeconomic Policy Under the Gold
– A country is in balance of payments equilibrium when the sum of its current, capital, and nonreserve financial accounts equals zero.
• Many governments took a laissez-faire attitude toward
Rates Summary
Copyright © 2003 Pearson Education, Inc.
Slide 18-3
Introduction
The interdependence of open national economies has
made it more difficult for governments to achieve full employment and price stability.
Copyright © 2003 Pearson Education, Inc.
Slide 18-9
Macroeconomic Policy Goals in an Open Economy
– Several factors might lead policymakers to prefer that domestic saving be devoted to higher levels of domestic investment and lower levels of foreign investment:
• Under-and overemployment lead to price level
movements that reduce the economy’s efficiency. • To avoid price-level instability, the government must:
• The channels of interdependence depend on the
monetary and exchange rate arrangements.
This chapter examines the evolution of the
international monetary system and how it influenced macroeconomic policy.