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A note on dummies for policies in gravity models: a Montecarlo experiment

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  • Maria Cipollina
  • Luca Salvatici
  • Luca De Benedictis
  • Claudio Vicarelli

Abstract

The use of the gravity model to evaluate the effect of policies in a cross-country framework is largely predominant in the international economics empirical literature. This literature usually implements importer and exporter fixed effects to account for the theoretical Multilateral Trade Resistances, while preferential trade policies are approximated through the use of dummy variables. Results from a Monte Carlo experiment confirms that the identification of trade policy im pact using a gravity equation including fixed effects is severely limited. Moreover, the consequences of the error in measurement of the policy variable are magnified by the fixed effects control for unobserved heterogeneity.

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Bibliographic Info

Paper provided by Department of Economics - University Roma Tre in its series Departmental Working Papers of Economics - University 'Roma Tre' with number 0180.

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Date of creation: Sep 2013
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Handle: RePEc:rtr:wpaper:0180

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Keywords: Gravity model; Policy evaluation; Monte Carlo A nalysis;

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  1. Keith Head & Thierry Mayer, 2013. "Gravity Equations: Workhorse,Toolkit, and Cookbook," Working Papers 2013-27, CEPII research center.
  2. James E. Anderson & Eric van Wincoop, 2001. "Gravity with Gravitas: A Solution to the Border Puzzle," NBER Working Papers 8079, National Bureau of Economic Research, Inc.
  3. James E. Anderson & Eric van Wincoop, 2004. "Trade Costs," Boston College Working Papers in Economics 593, Boston College Department of Economics.
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  5. Cecília Hornok, 2012. "Gravity or Dummies? The Limits of Identification in Gravity Estimations," CEU Working Papers 2012_11, Department of Economics, Central European University, revised 20 May 2012.
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  7. Maria Cipollina & Luca Salvatici, 2010. "The trade impact of European Union agricultural preferences," Journal of Economic Policy Reform, Taylor and Francis Journals, vol. 13(1), pages 87-106.
  8. Joao Santos Silva & Silvana Tenreyro, 2005. "The log of gravity," LSE Research Online Documents on Economics 3744, London School of Economics and Political Science, LSE Library.
  9. Will Martin & Cong S. Pham, 2008. "Estimating the Gravity Model When Zero Trade Flows are Frequent," Economics Series 2008_03, Deakin University, Faculty of Business and Law, School of Accounting, Economics and Finance.
  10. Marie M. Stack, 2009. "Regional Integration and Trade: Controlling for Varying Degrees of Heterogeneity in the Gravity Model," The World Economy, Wiley Blackwell, vol. 32(5), pages 772-789, 05.
  11. Xiong, Bo & Chen, Sixia, 2012. "Estimating Gravity Equation Models in the Presence of Sample Selection and Heteroskedasticity," 2012 Annual Meeting, August 12-14, 2012, Seattle, Washington 124530, Agricultural and Applied Economics Association.
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