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December 1996 For the first time in the economics literature, Panagariya, Shah, and Mishra obtain import demand elasticities for a small country (Bangladesh) that are very large. The elasticities are based on parameters of a utility function that are systematically of the correct sign and statistically significant. Using highly disaggregated data, both own-price and cross-price elasticities are estimated. Most economists are comfortable with the assumption that import demand elasticities facing small countries such as Austria, Belgium, and Denmark are approximately infinite. Yet the actual estimates of import demand elasticities for these and other countries are disturbingly low. Typical estimates range from 1-2, and in rare cases rise to 3. Such estimates seriously undermine the case for unilateral liberalization since they suggest considerable market power on the part of even small economies. They also raise doubts about the ability of exports to serve as an engine of growth. With import demand elasticities lying between 1 and 3, a 20 percent annual expansion in exports would, for example, lead to a substantial deterioration in the terms of trade. Panagariya, Shah, and Mishra analyze the U.S. demand for imports from Bangladesh for the products restricted under the Multifiber Arrangement. Because Bangladesh is only a small supplier of these products and close substitutes are available from many Asian and Latin American countries, they expected the elasticity of demand for Bangladeshi imports to be high. Their estimates of own-price elasticity are consistently high, exceeding 65 in all cases. This finding accords with trade theorists' prejudice that small countries can essentially behave as price takers but conflicts with the view in the empirical literature that demand elasticities rarely exceed 3 and are generally between 1 and 2. The authors' analysis differs from the existing literature in three ways. First, contrary to the general practice of postulating an ad hoc equation that violates trade theory, they derive a set of estimation equations from an explicit, utility-maximization model. They estimate these equations as a system and use the estimated parameters of the utility function to obtain the Marshallian own-price and cross-price elasticities as well as the income elasticity of demand. Second, they take explicit account of U.S. imports from competitors of Bangladesh. Rather than proxy competitors' prices by the prices prevailing in the export market, they rely directly on competitors' prices. Finally, they use highly disaggregated data that make the unit value of exports a far better proxy for price than is the case with the aggregate export data that are commonly used in this literature. This paper is a product of the Country Operations Division, Country Department I, South Asia. The study was funded by the Bank's Research Support Budget under research project Export Competitiveness and the Real Exchange Rate (RPO 679-59).
This paper focuses on the sluggish growth of world trade relative to income growth in recent years. The analysis uses an empirical strategy based on an error correction model to assess whether the global trade slowdown is structural or cyclical. An estimate of the relationship between trade and income in the past four decades reveals that the long-term trade elasticity rose sharply in the 1990s, but declined significantly in the 2000s even before the global financial crisis. These results suggest that trade is growing slowly not only because of slow growth of Gross Domestic Product (GDP), but also because of a structural change in the trade-GDP relationship in recent years. The available evidence suggests that the explanation may lie in the slowing pace of international vertical specialization rather than increasing protection or the changing composition of trade and GDP.
One cannot exaggerate the importance of estimating how international trade responds to changes in income and prices. But there is a tension between whether one should use models that fit the data but that contradict certain aspects of the underlying theory or models that fit the theory but contradict certain aspects of the data. The essays in Estimating Trade Elasticities book offer one practical approach to deal with this tension. The analysis starts with the practical implications of optimising behaviour for estimation and it follows with a re-examination of the puzzling income elasticity for US imports that three decades of studies have not resolved. The analysis then turns to the study of the role of income and prices in determining the expansion in Asian trade, a study largely neglected in fifty years of research. With the new estimates of trade elasticities, the book examines how they assist in restoring the consistency between elasticity estimates and the world trade identity.
In this collection of 17 articles, top scholars synthesize and analyze scholarship on this widely used tool of policy analysis, setting forth its accomplishments, difficulties, and means of implementation. Though CGE modeling does not play a prominent role in top US graduate schools, it is employed universally in the development of economic policy. This collection is particularly important because it presents a history of modeling applications and examines competing points of view. - Presents coherent summaries of CGE theories that inform major model types - Covers the construction of CGE databases, model solving, and computer-assisted interpretation of results - Shows how CGE modeling has made a contribution to economic policy
Trade flows and trade policies need to be properly quantified to describe, compare, or follow the evolution of policies between sectors or countries or over time. This is essential to ensure that policy choices are made with an appropriate knowledge of the real conditions. This practical guide introduces the main techniques of trade and trade policy data analysis. It shows how to develop the main indexes used to analyze trade flows, tariff structures, and non-tariff measures. It presents the databases needed to construct these indexes as well as the challenges faced in collecting and processing these data, such as measurement errors or aggregation bias. Written by experts with practical experience in the field, A Practical Guide to Trade Policy Analysis has been developed to contribute to enhance developing countries' capacity to analyze and implement trade policy. It offers a hands-on introduction on how to estimate the distributional effects of trade policies on welfare, in particular on inequality and poverty. The guide is aimed at government experts engaged in trade negotiations, as well as students and researchers involved in trade-related study or research. An accompanying DVD contains data sets and program command files required for the exercises. Copublished by the WTO and the United Nations Conference on Trade and Development
Changing Patterns of Global Trade outlines the factors underlying important shifts in global trade that have occurred in recent decades. The emergence of global supply chains and their increasing role in trade patterns allowed emerging market economies to boost their inputs in high-technology exports and is associated with increased trade interconnectedness.The analysis points to one important trend taking place over the last decade: the emergence of China as a major systemically important trading hub, reflecting not only the size of trade but also the increase in number of its significant trading partners.
Does what economies export matter for development? If so, can industrial policies improve on the export basket generated by the market? This book approaches these questions from a variety of conceptual and policy viewpoints. Reviewing the theoretical arguments in favor of industrial policies, the authors first ask whether existing indicators allow policy makers to identify growth-promoting sectors with confidence. To this end, they assess, and ultimately cast doubt upon, the reliability of many popular indicators advocated by proponents of industrial policy. Second, and central to their critique, the authors document extraordinary differences in the performance of countries exporting seemingly identical products, be they natural resources or 'high-tech' goods. Further, they argue that globalization has so fragmented the production process that even talking about exported goods as opposed to tasks may be misleading. Reviewing evidence from history and from around the world, the authors conclude that policy makers should focus less on what is produced, and more on how it is produced. They analyze alternative approaches to picking winners but conclude by favoring 'horizontal-ish' policies--for instance, those that build human capital or foment innovation in existing and future products—that only incidentally favor some sectors over others.
Free trade, indeed economic globalization generally, is under siege. The conventional arguments for protectionism have been discredited but not banished. And free trade faces strong new challenges from a variety of groups, including environmentalists and human rights activists as well as traditional lobbies who wrap their agendas in the language of justice and rights. These groups, claiming a general interest and denouncing free trade as a special interest of corporations and other capitalist forces, have organized large and vocal protests in Seattle, Prague, and elsewhere. Based on his acclaimed Stockholm lectures and picking up where his widely influential Protectionism left off, Jagdish Bhagwati applies critical insights from revolutionary developments in commercial policy theory--many his own--to show how the pursuit of social and environmental agendas can be creatively reconciled with the pursuit of free trade. Indeed, he argues that free trade, by raising living standards, can serve these agendas far better than can a descent into trade sanctions and restrictions. After settling the score in favor of free trade, Professor Bhagwati considers alternative ways in which it can be pursued. Chiefly, he argues in support of multilateralism and advances a withering critique of recent bilateral and regional free trade agreements (including NAFTA) as preferential arrangements that introduce growing chaos into the world trading system. He also makes a strong case for "going it alone" on the road to trade liberalization and endorses the reemergence of unilateral liberalization at points around the globe. Forcefully, elegantly, and clearly written for the public by one of the foremost economic thinkers of our day, this volume is not merely accessible but essential reading for anyone interested in economic policy or in the world economy.