International trade theory

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International trade theory is a sub-field of economics which analyzes the patterns of international trade, its origins, and its welfare implications. International trade policy has been highly controversial since the 18th century. International trade theory and economics itself have developed as means to evaluate the effects of trade policies.

Contents

Adam Smith's model

Adam Smith describes trade taking place as a result of countries having absolute advantage in production of particular goods, relative to each other. [1] [2] Within Adam Smith's framework, absolute advantage refers to the instance where one country can produce a unit of a good with less labor than another country.

In Book IV of his major work the Wealth of Nations , Adam Smith, discussing gains from trade, provides a literary model for absolute advantage based upon the example of growing grapes from Scotland. He makes the argument that while it is possible to grow grapes and produce wine in Scotland, the investment in the factors of production would cost thirty times more than the cost of purchasing an equal quantity from a foreign country. [3] The minimization of aggregate real costs and efficient resource allocation through trade without strong consideration for comparative costs form the basis of Adam Smith's model of absolute advantage in international trade. [4]

Ricardian model

The law of comparative advantage was first proposed by David Ricardo. Portrait of David Ricardo by Thomas Phillips.jpg
The law of comparative advantage was first proposed by David Ricardo.

The Ricardian theory of comparative advantage became a basic constituent of neoclassical trade theory. Any undergraduate course in trade theory includes a presentation of Ricardo's example of a two-commodity, two-country model. For the modern development, see Ricardian trade theory extensions

The Ricardian model focuses on comparative advantage, which arises due to differences in technology or natural resources. The Ricardian model does not directly consider factor endowments, such as the relative amounts of labor and capital within a country.

New interpretation

The Ricardian model is often presented as being based on the following assumptions:

This is incomplete, because the Ricardian model can be extended to the situation where many goods can be inputs for a production. See Ricardian trade theory extensions below. Relative ratio of labor input coefficients has a valid meaning only for simple cases such as two-country, many commodity case or many-country, two-commodity case without no intermediate goods. [5]

As for the meanings of four magic numbers, a new interpretation became popular in the 21st century. In 2002, Roy Ruffin pointed the possibility of new reading of Ricardo's explanations. [6] Andrea Maneschi made a detailed account in 2004. [7] Now the new interpretation has become almost as established as Ricardo's text, not only for the first third of Chapter 7 but for all descriptions throughout his book concerning international trade. [8]

Specific factors model

The specific factors model is an extension of the Ricardian model. It was due to Jacob Viner's interest in explaining the migration of workers from the rural to urban areas after the Industrial revolution.

In this model labor mobility among industries is possible while capital is assumed to be immobile in the short run. Thus, this model can be interpreted as a short-run version of the Heckscher-Ohlin model. The "specific factors" name refers to the assumption that in the short run, specific factors of production such as physical capital are not easily transferable between industries. The theory suggests that if there is an increase in the price of a good, the owners of the factor of production specific to that good will profit in real terms

Heckscher–Ohlin model

In the early 1900s, a theory of international trade was developed by two Swedish economists, Eli Heckscher and Bertil Ohlin. This theory has subsequently become known as the Heckscher–Ohlin model (H–O model). The results of the H–O model are that the pattern of international trade is determined by differences in factor endowments. It predicts that countries will export those goods that make intensive use of locally abundant factors and will import goods that make intensive use of factors that are locally scarce.

The H–O model makes the following core assumptions:

Stolper-Samuelson theorem

According to the Stolper-Samuelson theorem, the export of a product which is a relatively cheap, abundant resource makes this resource more scarce in the domestic market. Thus, the increased demand for the abundant resource leads to an increase in its price and an increase in its income. Simultaneously, the income of the resource used intensively in the import-competing product decreases as its demand falls.

Simply put, this theorem indicates that an increase in the price of a product rises the income earned by resources that are used intensively in its production. Conversely, a decrease in the price of a product reduces the income of the resources that it uses intensively. The abundant resource that have comparative advantage realizes an increase in income, and the scarce resource realizes a decrease in its income regardless of industry. This trade theory concludes that some people will suffer losses from free trade even in the long-term. [9]

Empirical Evidence for the Heckscher–Ohlin model

In 1953, Wassily Leontief published a study in which he tested the validity of the Heckscher-Ohlin theory. [10] The study showed that the United States was more abundant in capital compared to other countries, therefore the United States would export capital-intensive goods and import labor-intensive goods. Leontief found out that the United States' exports were less capital intensive than its imports. The result became known as Leontief's paradox.

After the appearance of Leontief's paradox, many researchers[ who? ] tried to save the Heckscher-Ohlin theory, either by new methods of measurement, or by new interpretations.[ citation needed ]

New trade theory

New trade theory tries to explain empirical elements of trade that comparative advantage-based models above have difficulty with. These include the fact that most trade is between countries with similar factor endowment and productivity levels, and the large amount of multinational production (i.e., foreign direct investment) that exists. New trade theories are often based on assumptions such as monopolistic competition and increasing returns to scale. One result of these theories is the home-market effect, which asserts that, if an industry tends to cluster in one location because of returns to scale and if that industry faces high transportation costs, the industry will be located in the country with most of its demand, in order to minimize cost.

New trade theory

New trade theory is a theory of international trade inaugurated by Marc Melitz in 2003. [11] It discovered that efficiency of firms in a country changes much and those firms engaged in international trade have higher productivity than firms which produce only for domestic market. As it is fitted to big data age, the research produced many follows and the trend is now called New new trade theory in comparison to Paul Krugman's new trade theory.

Gravity model

The Gravity model of trade presents a more empirical analysis of trading patterns. The gravity model, in its basic form, predicts trade based on the distance between countries and the interaction of the countries' economic sizes. The model mimics the Newtonian law of gravity which also considers distance and physical size between two objects. The model has been shown to have significant empirical validity. [12]

Ricardian trade theory extensions

According to Eaton and Kortum, [13] in the 21 century, "the Ricardian framework has experienced a revival. Much work in international trade during the last decade has returned to the assumption that countries gain from trade because they have access to different technologies. ... This line of thought has brought Ricardo's theory of comparative advantage back to center stage." The Ricardian trade theory was expanded and generalized multiple times: notably to treat many-country many-product situation and to include intermediate input trade, and choice of production techniques. In Ricardian framework, capital goods (comprising fixed capital) are treated as goods which are produced and consumed in the production.

Many countries, many goods

There were three waves of expansions and generalizations.

First phase: Major general results were obtained by McKenzie [14] [15] and Jones. [16] McKenzie was more interested in the patterns of trade specialisiations (including incomplete specializations), [17] whereas Jones was more interested in the patterns of complete specialization, in which the prices moves freely within a certain limited range. [18] The formula he found is often cited as Jones' inequality [19] or Jones' criterion. [20]

Second phase: Ricardo's idea was even expanded to the case of continuum of goods by Dornbusch, Fischer, and Samuelson (1977) [21] This model is restricted to two country case. It is employed for example by Matsuyama [22] and others. These theories use a special property that is applicable only for the two-country case. They normally assume fixed expenditure coefficients. Eaton and Kortum (2002) [23] inherited Ricardian model with a continuum of goods from Dorbusch, Fischer, and Samuelson (1977). It has succeeded to incorporate trade of intermediate products. Countries have different access to technology. The bundle of inputs is assumed as the same across commodities within a country. This means that all industries of a country consume the same bundle of inputs and there is no distinction between petrol-consuming and iron-consuming industries. This is the major reason why Eaton and Kortum (2002) cannot be used as framework for analyzing global value chains. The paper has gotten a big success as giving theoretical foundation for gravity model.

Third phase: Shiozawa [24] succeeded to construct a Ricardian theory with many-country, many-commodity model which permits choice of production techniques and trade of input goods. All countries have their own set of production techniques. Major difference with H-O model that this Ricardian model assumes different technologies. Wages determined in this model are different according to the productivity of countries. The model is therefore more suitable than H-O models in analyzing relations between developing and developed countries. Shiozawa's theory is now extended as "the new theory of international values." [25]

Traded intermediate goods

Ricardian trade theory ordinarily assumes that the labor is the unique input. This has been thought to be a significant deficiency for Ricardian trade theory since intermediate goods comprise a major part of world international trade. [26] [27]

McKenzie [28] and Jones [29] emphasized the necessity to expand the Ricardian theory to the cases of traded inputs. McKenzie (1954, p. 179) pointed that "A moment's consideration will convince one that Lancashire would be unlikely to produce cotton cloth if the cotton had to be grown in England." [30] Paul Samuelson [31] coined a term Sraffa bonus to name the gains from trade of inputs.

John S. Chipman observed in his survey that McKenzie stumbled upon the questions of intermediate products and postulated that "introduction of trade in intermediate product necessitates a fundamental alteration in classical analysis". [32] It took many years until Shiozawa succeeded in removing this deficiency. The new theory of international values is now the unique theory that can deal with input trade in a general form. [33]

Based on an idea of Takahiro Fujimoto, [34] who is a specialist in automobile industry and a philosopher of the international competitiveness, Fujimoto and Shiozawa developed a discussion in which how the factories of the same multi-national firms compete between them across borders. [35] [36] International intra-firm competition reflects a really new aspect of international competition in the age of so-called global competition.

Global value chains

Revolutionary change in communication and information techniques and drastic downs of transport costs have enabled an historic breakup of production process. Networks of fragmented productions across countries are now called global value chains. [37] The emergence of global production has changed the way we understand the trade and international economy. [38] Still the core of international trade theory continues to be dominated by theories which assume trade of complete goods. As Grossman and Rossi-Hansberg put it, it needs a new paradigm to better understand the implication of these trends. [39] [40] Extended Ricardian trade model provides a new theory that can treat trade of input goods and the emergence of global value chains. Based on the new theory of trade, which he names theory of international values, Shiozawa explained why and how global value chains rapidly spread all over the world at the end of the 20th century. [41]

Unemployment in international trade situations

Unemployment is closely related to international trade. [42] Four generations of trade theories assumed full employment as one of initial conditions and could not treat unemployment. Shiozawa, based on his discovery of a new definition of regular international value, succeeded to construct a new theory that permits unemployment. [36] [41]

See also

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References

  1. ↑ "ABSOLUTE AND COMPARATIVE ADVANTAGE" (PDF). INTERNATIONAL ENCYCLOPEDIA OF THE SOCIAL SCIENCES, 2ND EDITION. pp. 1–2. Archived from the original (PDF) on May 29, 2010. Retrieved May 4, 2009.
  2. ↑ Marrewijk, Charles van (January 18, 2007). "absolute advantage" (PDF). Department of Economics, Erasmus University Rotterdam:world economy. Princeton University Press. Retrieved May 3, 2009.[ permanent dead link ]
  3. ↑ Robbins, Lionel (1998). Medema, Steven G.; Samuels, Warren J. (eds.). A History of Economic Thought : the LSE Lectures . Princeton, NJ: Princeton University Press. pp.  210. ISBN   069101244X. OCLC   50745517.
  4. ↑ Bloomfield, Arthur I. (1994) [1st pub. 1975]. "Adam Smith and the Theory of International Trade". Essays in the history of international trade theory. Aldershot, Hants, England: E. Elgar. ISBN   1852788348. OCLC   28256445.
  5. ↑ Alan V. Deardorff (2005) Ricardian comparative advantage with intermediate inputs. North American Journal of Economics and Finance 16(1): 11-34.
  6. ↑ Roy J. Ruffin (2002) David Ricardo's discovery of comparative advantage. History of Political Economy 34: 727-748.
  7. ↑ Andrea Maneschi (2004) The true meaning of David Ricardo's four magic numbers. Journal of International Economics 62(2): 433-443.
  8. ↑ Gilbert Faccarello (2017) A calm investigation into Mr. Ricardo's principles of international trade. Senga et al. (eds.) Ricardo and International Trade. London and New York: Routledge.
  9. ↑ Carbaugh, Robert J. International Economics. p. 77.
  10. ↑ Leontief, W. W. (1953). "Domestic Production and Foreign Trade: The American Capital Position Re-examined". Proceedings of the American Philosophical Society. 97: 332–349.
  11. ↑ Melitz, Marc J. (2003) The impact of trade on intra-industry reallocations and aggregate industry productivity. Econometrica 71(6): 1695-1725.
  12. ↑ Akman, 2016. "The facilitating role of visa policies on international trade and foreign direct investment"
  13. ↑ Jonathan Eaton and Samuel Kortum (2012) Putting Ricardo to Work. Journal of Economic Perspectives 26(2): 65-89. p.66.
  14. ↑ McKenzie, Lionel W. (1954). "Specialisation and Efficiency in World Production". Review of Economic Studies. 21 (3): 165–180. doi:10.2307/2295770. JSTOR   2295770.
  15. ↑ McKenzie, Lionel W. (1956). "Specialization in Production and the Production Possibility Locus". Review of Economic Studies. 23 (3): 56–64. doi:10.2307/2296152. JSTOR   2296152.
  16. ↑ Jones, Ronald W. (1961). "Comparative Advantage and the theory of Tariffs; A Multi-Country, Multi-commodity Model". Review of Economic Studies. 28 (3): 161–175. doi:10.2307/2295945. JSTOR   2295945.
  17. ↑ McKenzie, Lionel W. (1954). "Specialization and Efficiency in the World Production". Review of Economic Studies. 21 (3): 165–180. doi:10.2307/2295770. JSTOR   2295770.
  18. ↑ Jones, Ronald W. (1961). "Comparative Advantage and the theory of Tariffs; A Multi-Country, Multi-commodity Model". Review of Economic Studies. 28 (3): 161–175. doi:10.2307/2295945. JSTOR   2295945., section 4.
  19. ↑ Chipman, John S. (1965). "A Survey of the Theory of International Trade: Part 1, The Classical Theory". Econometrica. 33 (3): 477–519. doi:10.2307/1911748. JSTOR   1911748., p.508.
  20. ↑ Golub, S. S. (1995) Comparative and absolute advantage in the Asia-Pacific region (No. 95-09). Federal Reserve Bank of San Francisco. p.4
  21. ↑ Dornbusch, R.; Fischer, S.; Samuelson, P. A. (1977). "Comparative Advantage, Trade, and Payments in a Ricardian Model with a Continuum of Goods". The American Economic Review. 67 (5): 823–839.
  22. ↑ Matsuyama, K. (2000). "A Ricardian Model with a Continuum of Goods under Nonhomothetic Preferences: Demand Complementarities, Income Distribution, and North-South Trade" (PDF). Journal of Political Economy. 108 (6): 1093–1120. doi:10.1086/317684. S2CID   154166748.
  23. ↑ J. Eaton and S. Kortum (2002) Technology, Geography, and Trade. Econometrica 70(5): 1741-1779. See p.1745 in particular for the model building.
  24. ↑ Shiozawa, Y (2007). "A New Construction of Ricardian Trade Theory—A Many-country, Many-commodity Case with Intermediate Goods and Choice of Production Techniques—". Evolutionary and Institutional Economics Review. 3 (2): 141–187. doi:10.14441/eier.3.141. S2CID   154021080.
  25. ↑ Shiozawa, Y. (2017) The new theory of international values: an overview. Chapter 1 (pp.3-73) in Shiozawa, Oka and Tabuchi (eds.) A New Construction of Ricardian Theory of International Values: Analytical and Historical Approach Singapore, Springer.
  26. ↑ Yeats, A., 2001, "Just How Big is Global Production Sharing?" in Arndt, S. and H. Kierzkowski　(eds.), 2001, Fragmentation: New Production Patterns in the World Economy, (Oxford University Press, Oxford).
  27. ↑ Bardhan, Ashok Deo, and Jaffee, Dwight (2004), "On Intra-Firm Trade and Multinationals: Foreign Outsourcing and Offshoring in Manufacturing" in Monty Graham and Robert Solow eds., The Role of Foreign Direct Investment and Multinational Corporations in Economic Development.
  28. ↑ McKenzie, Lionel W. 1954 Specialization and Efficiency in the World Production, Review of Economic Studies, 21(3): 165–180. See pp. 177–9.
  29. ↑ Jones, Ronald W. 1961 Comparative Advantage and the theory of Trarrifs; A Multi-Country, Multi-commodity Model, Review of Economic Studies, 28(3): 161–175. See pp. 166–8.
  30. ↑ Equilibrium, Trade, and Growth: Selected Papers of Lionel W. McKenzie, By Lionel W. McKenzie, Tapan Mitra, Kazuo Nishimura, Page 232.
  31. ↑ Samuelson, P. (2001). "A Ricardo-Sraffa Paradigm Comparing Gains from Trade in Inputs and Finished Goods". Journal of Economic Literature. 39 (4): 1204–1214. doi:10.1257/jel.39.4.1204.
  32. ↑ Chipman, John S. (1965). "A Survey of the Theory of International Trade: Part 1, The Classical Theory". Econometrica. 33 (3): 477–519 Section 1.8. doi:10.2307/1911748. JSTOR   1911748.
  33. ↑ Y. Shiozawa 2017 The New Theory of International Values: An Overview. In Shiozawa, Oka and Tabuchi (Eds.) A New Construction of Ricardian Theory of International Values, Springer Science, Singapore. Chap. 1, pp.3-75.
  34. ↑ Fujimoto, T. 2001 The Evolution of a Manufacturing System at Toyota, Productivity Press. Fujimoto, T. 2007 Competing to Be Really, Really Good: The Behind the Scenes Drama of Capability-Building Competition in the Automobile Industry, I-House Press.
  35. ↑ Fujimoto, T.; Shiozawa, Y. (2011). "Inter and Intra Company Competition in the Age of Global Competition: A Micro and Macro Interpretation of Ricardian Trade Theory". Evolutionary and Institutional Economics Review. 8 (1): 1–37. doi:10.14441/eier.8.1. S2CID   154774807. and 8(2): 193–231.
  36. 1 2 Shiozawa, Y. and T. Fujimoto (2018) The nature of international competition among firms. In T. Fujimoto and F. Ikuine (eds.) Industrial Competitiveness and Design Evolution, Tokyo, Springer Japan.
  37. ↑ WTO (2013) Global value chains in a changing world.Edited by Deborah K. Elms and Patrick Low, Geneve, WTO Publications. WTO AND OTHER ORGANIZATIONS (2017) Global Value Chain Development Report.
  38. ↑ Escaith, H., and S. Miroudot (2016) Industry-level competitiveness and inefficiency spillovers in global value chains. 24th International Input-Output Conference 4–8 July 2016, Seoul, Korea, p.2. https://www.iioa.org/conferences/24th/papers/files/2437_20160523071_HESMTiVAandSupplySideSeoul2016finaldraft.pdf
  39. ↑ Grossman, G. and E. Rossi-Hansberg (2006) The Rise of Offshoring: It’s Not Wine for Cloth Anymore. American Economic Review 98(5): 978-97.
  40. ↑ Escaith, H., and S. Miroudot (2016) Industry-level competitiveness and Evolutionary Economics
  41. 1 2 Shiozawa, Y. (2020) A new framework for analyzing technological change. Journal of Evolutionary Economics30: 089-1034.
  42. ↑ David H. Autor, David Dorn, Gordon H. Hanson, Jae Song (2014) Trade Adjustment: Worker-Level Evidence. Quarterly Journal of Economics129(4): 1799–1860. https://doi.org/10.1093/qje/qju026
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