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Together at Last: Trade Costs, Demand Structure, and Welfare

  • Mrázová, Monika
  • Neary, J Peter

We show that relaxing the assumption of CES preferences in monopolistic competition has surprising implications when trade is restricted. Integrated and segmented markets behave very differently, the latter typically implying a form of reciprocal dumping. Globalization and lower trade costs have very different effects: the former reduces spending on all existing varieties, the latter switches spending from home to imported varieties; in the plausible case where demands are less convex than CES, globalization raises firm output whereas lower trade costs reduce it. Finally, calibrating gains from trade is harder. Many more parameters need to be calibrated than in the CES case, while import demand elasticities are likely to overestimate the true elasticities, and so underestimate the gains from trade.

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Paper provided by C.E.P.R. Discussion Papers in its series CEPR Discussion Papers with number 9839.

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Date of creation: Feb 2014
Date of revision:
Handle: RePEc:cpr:ceprdp:9839
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  1. Marc J. Melitz & Stephen J. Redding, 2013. "Firm Heterogeneity and Aggregate Welfare," CEP Discussion Papers dp1200, Centre for Economic Performance, LSE.
  2. ZHELOBODKO, Evgeny & KOKOVIN, Sergey & Parenti, Mathieu & THISSE, Jacques-François, . "Monopolistic competition beyond the constant elasticity of substitution," CORE Discussion Papers RP 2488, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
  3. Dennis Novy, 2010. "International Trade Without CES: Estimating Translog Gravity," CEP Discussion Papers dp1031, Centre for Economic Performance, LSE.
  4. Monika Mrázová & J. Peter Neary, 2012. "Selection effects with heterogeneous firms," LSE Research Online Documents on Economics 51521, London School of Economics and Political Science, LSE Library.
  5. Ina Simonovska, 2011. "Income Differences and Prices of Tradables," Working Papers 1015, University of California, Davis, Department of Economics.
  6. Michael Waugh & Ina Simonovska, 2010. "The Elasticity of Trade: Estimates and Evidence," 2010 Meeting Papers 637, Society for Economic Dynamics.
  7. Arnaud Costinot & Andres Rodriguez-Clare & Costas Arkolakis, 2010. "New Trade Models, Same Old Gains?," 2010 Meeting Papers 433, Society for Economic Dynamics.
  8. Simonovska, Ina; Waugh, Michael E., 2010. "The Elasticity of Trade: Estimates & Evidence," CAGE Online Working Paper Series 13, Competitive Advantage in the Global Economy (CAGE).
  9. Swati Dhingra & John Morrow, 2012. "The Impact of Integration on Productivity and Welfare Distortions Under Monopolistic Competition," CEP Discussion Papers dp1130, Centre for Economic Performance, LSE.
  10. Ina Simonovska, 2010. "Income Differences and Prices of Tradables: Insights from an Online Retailer," NBER Working Papers 16233, National Bureau of Economic Research, Inc.
  11. repec:cor:louvrp:-2488 is not listed on IDEAS
  12. Bertoletti, Paolo & Epifani, Paolo, 2014. "Monopolistic competition: CES redux?," Journal of International Economics, Elsevier, vol. 93(2), pages 227-238.
  13. Krugman, Paul R., 1979. "Increasing returns, monopolistic competition, and international trade," Journal of International Economics, Elsevier, vol. 9(4), pages 469-479, November.
  14. Ralph Ossa, 2012. "Why Trade Matters After All," NBER Working Papers 18113, National Bureau of Economic Research, Inc.
  15. Robert C. Feenstra & David E. Weinstein, 2010. "Globalization, Markups and U.S. Welfare," NBER Working Papers 15749, National Bureau of Economic Research, Inc.
  16. Pollak, Robert A, 1971. "Additive Utility Functions and Linear Engel Curves," Review of Economic Studies, Wiley Blackwell, vol. 38(116), pages 401-14, October.
  17. Krugman, Paul, 1980. "Scale Economies, Product Differentiation, and the Pattern of Trade," American Economic Review, American Economic Association, vol. 70(5), pages 950-59, December.
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