International Trade - Theory and Policy, 2010a

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Welfare-Improving Policies in a Second-Best World An economic rationale for government intervention in the private market arises whenever there are uncorrected market imperfections or distortions. In these circumstances, the economy is characterized by a second-best rather than a first-best equilibrium. In the best of cases, the government policy can correct the distortions completely and the economy would revert back to the state under economic nirvana. If the distortion is not corrected completely, then at least the new equilibrium conditions, altered by the presence of the distortion, can all be satisfied. In either case, an appropriate government policy can act to correct or reduce the detrimental effects of the market imperfection or distortion, raise economic efficiency, and improve national welfare. It is for this reason that many types of trade policies can be shown to improve national welfare. Trade policies, chosen appropriate to the market circumstances, act to correct the imperfections or distortions. This remains true even though the trade policies themselves would act to reduce economic efficiency if applied starting from a state of economic nirvana. What happens is that the policy corrects the distortion or imperfection and thus raises national welfare by more than the loss in welfare arising from the application of the policy. Many different types of policies can be applied, even for the same distortion or imperfection. Governments can apply taxes, subsidies, or quantitative restrictions. They can apply these to production, to consumption, or to factor usage. Sometimes they even apply two or more of these policies simultaneously in the same market. Trade policies, like tariffs or export taxes, are designed to directly affect the flow of goods and services between countries. Domestic policies, like production subsidies or consumption taxes, are directed at a particular activity that occurs within the country but is not targeted directly at trade flows. One prominent area of trade policy research focuses on identifying the optimal policy to be used in a particular second-best equilibrium situation. Invariably, this research has considered multiple policy options in any one situation and has attempted to rank order the potential policies in terms of their efficiency-enhancing capabilities. As with the ranking of equilibria described above, the ranking of policy options is also typically characterized using the first-best and second-best labels. Saylor URL: http://www.saylor.org/books Saylor.org 449
Thus the ideal or optimal policy choice in the presence of a particular market distortion or imperfection is referred to as a first-best policy. The first-best policy will raise national welfare, or enhance aggregate economic efficiency, to the greatest extent possible in a particular situation. Many other policies can often be applied, some of which would improve welfare. If any such policy raises welfare to a lesser degree than a first-best policy, then it would be called a second-best policy. If there are many policy options that are inferior to the first-best policy, then it is common to refer to them all as second-best policies. Only if one can definitively rank three or more policy options would one ever refer to a third-best or fourth-best policy. Since these rankings are often difficult, third-best (and so on) policies are not commonly denoted. Trade Policies in a Second-Best World In a 1971 paper, Jagdish Bhagwati provided a framework for understanding the welfare implications of trade policies in the presence of market distortions. [1] This framework applied the theory of the second best to much of the welfare analysis that had been done in international trade theory up until that point. Bhagwati demonstrated the result that trade policies can improve national welfare if they occur in the presence of a market distortion and if they act to correct the detrimental effects caused by the distortion. However, Bhagwati also showed that in almost all circumstances a trade policy will be a second-best rather than a first-best policy choice. The first-best policy would likely be a purely domestic policy targeted directly at the distortion in the market. One exception to this rule occurs when a country is “large” in international markets and thus can affect international prices with its domestic policies. In this case, as was shown with optimal tariffs, quotas, voluntary export restraints (VERs), and export taxes, a trade policy is the first-best policy. Since Bhagwati’s paper, international trade policy analysis has advanced to include market imperfections such as monopolies, duopolies, and oligopolies. In many of these cases, it has been shown that appropriately chosen trade policies can improve national welfare. The reason trade policies can improve welfare, of course, is that the presence of the market imperfection means that the economy begins at a second-best equilibrium. The trade policy, if properly targeted, can reduce the negative aggregate effects caused by the imperfection and thus raise national welfare. Saylor URL: http://www.saylor.org/books Saylor.org 450
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This text was adapted by The Saylor
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Chapter 1 Introductory Trade Issues
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However, rapid growth in the value
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As of 2009, 153 countries were memb
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International trade is a field in e
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imported, the U.S. government colle
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Kenya 12.7 Ghana 13.1 Generally spe
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Average tariffs can be measured as
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When the bubble bursts, the demand
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missed deadlines are commonplace in
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a well-known “bicycle theory” a
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But at the same time that many deve
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Recent opposition to trade liberali
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ought back to the United States and
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conference attended by the main all
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One of the key principles of the GA
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arriers. [1] The trade remedy laws
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ound tariff rate the country reache
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instead, they are put into place ov
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5. The WTO principle to treat an im
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subsidies. Recall that export subsi
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As a result of Uruguay Round negoti
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Agreement, or TRIPS. The TRIPS inte
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1.7 The World Trade Organization LE
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1. Consultations. The DSB first dem
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countries from choosing more destru
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P, P+ CAFTA-DR FTA PE MA OM R SG U.
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0806.10.20 $1.13/m 3 (Feb. 15-Mar.
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Tariffs vary according to time of e
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1.9 Appendix B: Bound versus Applie
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EXERCISE 1. Jeopardy Questions. As
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2.1 The Reasons for Trade LEARNING
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For example, the Ricardian model of
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2. Learn the major historical figur
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could end up with more of both good
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The primary issue in the analysis o
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Real wages (and incomes) of individ
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he begins planting seeds in the sec
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In this way, we might raise the wel
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2.3 Ricardian Model Assumptions LEA
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Utility Maximization and Demand In
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United States L C + L W = L France
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2. Suppose that the unit labor requ
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KEY TAKEAWAYS The equation aLC QC
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comparative advantage in newspaper
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−aLCaLW⎡⎣⎢hrslbhrsgal=gallb
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KEY TAKEAWAYS Labor productivity i
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2.6 A Ricardian Numerical Example L
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With full employment of labor, prod
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At this point, we can already see a
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The answer to some of these questio
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wC=PCaLC. If production occurs in t
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Thus a good way to think about how
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Similarly, by rearranging the above
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production. But where will they fin
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The focus on real wages allows us t
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Real Wages in Autarky To calculate
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exchange. Thus the real wage of che
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2.11 The Welfare Effects of Free Tr
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Free trade will raise aggregate wel
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Chapter 3 The Pure Exchange Model o
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A Simple Example of Trade Suppose t
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3.2 Determinants of the Terms of Tr
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Persuasion The art of persuasion ca
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KEY TAKEAWAY The terms of trade is
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two individuals make a voluntary ex
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3.4 Three Traders and Redistributio
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is not motivated by profit but inst
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The changes described above assume
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3.6 The Nondiscrimination Argument
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clothing worker. The same applies i
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the page, scroll down to the “Bou
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4.1 Factor Mobility Overview LEARNI
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argument that free trade can only b
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them, but only if the prices are ve
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4.3 Time and Factor Mobility LEARNI
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factor to be moved and become produ
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KEY TAKEAWAY The immobile factor m
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wine workers and cheese workers. Th
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In autarky, the quantity demanded o
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4.7 Depicting a Free Trade Equilibr
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0 the variable does not change A th
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Thus cheese workers are most likely
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Real Wage of Wheat Workers in Terms
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wages. However, these extra profits
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French production and consumption i
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5.1 Chapter Overview LEARNING OBJEC
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less-developed countries have much
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would rise, while the wage rate wou
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Ricardian model, then factor prices
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4. This is by which industries diff
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where KC and KS are the quantities
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Let aLC[labor−hrsrack] represent
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The capital-labor ratio in an indus
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that would employ all the capital i
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The Relationship between Endowments
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Suppose the exogenous variables of
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Adding these two equations vertical
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3. Write the magnification effect f
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tariffs or other government regulat
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If the price of clothing had risen,
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Table 5.6 Numerical Values for Exog
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w∧>PC∧>PS∧>r∧. The effect i
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2. Suppose the price of cheese fall
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this requires a fair amount of adva
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workers per unit of capital in the
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of quantities CS″/CC″. Since CS
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In Figure 5.8 "Free Trade Equilibri
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5.11 National Welfare Effects of Fr
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calculating changes in real income
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who has deposits in a pension plan
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export industry in order to benefit
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Income is redistributed among indiv
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Thus it is always possible to find
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affects the capital-labor ratios in
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1. Describe the pattern of factor f
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assumed to be freely and costlessly
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expansion of output in the export s
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[1] See R. W. Jones, “A Three-Fac
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product line for a representative t
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The total amount of revenue earned
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The horizontal length of Figure 5.1
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Our prime concern, however, is the
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An alternative version of the magni
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8. The magnification effect for pri
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can be used to transport tomatoes o
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esponds to the excess supply of wor
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The effect on workers is, in genera
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Factor Rewards over Time Now let’
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Figure 5.20 Dynamic Import-Capital
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In summary, the models suggest that
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[1] See J. P. Neary, “Short-Run C
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6.1 Chapter Overview LEARNING OBJEC
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6.2 Economies of Scale and Returns
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produced and if the costs of this e
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6.3 Gains from Trade with Economies
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United States aLC = 1 L = 100 Franc
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thirty racks of clothing, then each
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model best describes markets in whi
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2. Each firm produces a product tha
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2. The demand assumption in which e
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Keep in mind that this is the equil
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KEY TAKEAWAYS A market equilibrium
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1. If the product is such that an i
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varieties may increase aggregate we
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7.1 Basic Assumptions of the Partia
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2. The term used to describe a coun
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where XSUS(.) is the export supply
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This implies also that world supply
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1. The price that equalizes one cou
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The price that ultimately prevails
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Surplus", some firm would be willin
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Changes in Producer Surplus Suppose
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2. The term used to describe a meas
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the same price for their product re
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to purchase the Mexican wheat at $1
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The effect on the foreign price is
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The quantity of imports and exports
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the sum of the gains exceeds the su
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indicate the effect of each policy
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7.6 The Optimal Tariff LEARNING OBJ
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zero. Somewhere between a zero tari
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3. The tariff rate that corresponds
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KEY TAKEAWAYS An import tariff wil
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7.8 Import Tariffs: Small Country W
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3. The tariff causes a redistributi
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1. Where on the graph is the level
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We examine the effects of optimal t
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3. Given player one’s optimal pol
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The goal of a cooperative equilibri
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1. Use the information provided in
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7.10 Import Quotas: Large Country P
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An import quota will reduce the qua
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KEY TAKEAWAYS To administer a quot
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demand is equal to the quota level.
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market decreases producer surplus i
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Foreign National Welfare 2. Suppose
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This implies that, in the case of a
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Quota Rents National Welfare + C
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Import Quota (Administered by Givin
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to as tariffication. In this way, f
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Next, consider the effects in this
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In situations where market changes
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where S is the specific export subs
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7.17 Export Subsidies: Large Countr
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the subsidy payments are made, then
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An export subsidy of any size will
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2. Identify the effects of a counte
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Table 7.12 "Welfare Effects of the
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Consumer Surplus − (G + H + I + J
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KEY TAKEAWAYS An antisubsidy law,
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9. What is the change in government
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Notice that a unique set of prices
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in the import country and in the ca
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Figure 7.36 Welfare Effects of a VE
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the quota rents will benefit, but p
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A the variable change is ambiguous
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Page 410 and 411: If a domestic consumption tax is im
Page 412 and 413: Equivalency between Domestic and Tr
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Page 416 and 417: KEY TAKEAWAYS Domestic production
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Page 436 and 437: Chapter 9 Trade Policies with Marke
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Page 440 and 441: EXERCISE 1. Jeopardy Questions. As
Page 442 and 443: firm’s welfare) by restricting su
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Page 446 and 447: Policy-Imposed Distortions Another
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Page 452 and 453: Summary of the Theory of the Second
Page 454 and 455: 9.4 Unemployment and Trade Policy L
Page 456 and 457: Suppose that international market c
Page 458 and 459: 9.2 "Welfare Effects of an Import T
Page 460 and 461: Begin with the same surge of import
Page 462 and 463: eliminate the same unemployment imp
Page 464 and 465: A the variable change is ambiguous
Page 466 and 467: their own production efficiency imp
Page 468 and 469: Suppose that the infant industry ar
Page 470 and 471: This means that in the second perio
Page 472 and 473: The Economic Argument against Infan
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Page 476 and 477: 9.6 The Case of a Foreign Monopoly
Page 478 and 479: Assuming the monopolist maximizes p
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Page 482 and 483: This shows that although a tariff c
Page 484 and 485: 2. Recognize that a trade policy ca
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Page 490 and 491: 9.8 Public Goods and National Secur
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Pollution Effect National Welfare
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Govt. Revenue Pollution Effect + e
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A Source of Controversy For many en
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This statement points out that many
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noneconomists, providing permits th
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[4] World Trade Organization, “Tr
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product categories. This type of tr
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The key question of interest concer
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Figure 9.10 "Harmful Trade Diversio
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Free trade area effects on Country
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We assume that A has a specific tar
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The simple way to do that is to ima
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Chapter 10 Political Economy and In
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do indeed seek to maximize national
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a representative democracy, governm
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3. This type of lobbying does not i
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much larger than the number of firm
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We can now ask whether a household
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Large groups are much less effectiv
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Because the per-producer benefit of
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clearly he or she would vote for th
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10.7 The Lobbying Problem in a Demo
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Chapter 11 Evaluating the Controver
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the results from any one model. Ins
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increase in national welfare. This
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4. The enhancement of this is what
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of the real world. The real world c
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Another way to deflect the concern
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For example, an optimal tariff or o
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Stuart Mill in hisPrinciples of Pol
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11.5 The Economic Case against Sele
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to eliminate some of the inefficien
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effects, it would then need to meas
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to avoid the use of any such policy
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Selected protection requires detail
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11.6 Free Trade as the “Pragmatic
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