GTAP2016@WB/DC(1): Armington vs. Melitz

• Balistreri, E. J., Tarr, D. (2016) "Comparison of Welfare Results from Trade Liberalization in the Armington, Krugman and Melitz Models: Impacts with Features of Real Economies," Presented at GTAP 2016@WB/DC, June.

Arkolais et al. (2012), Costinot and Rodrigues-Clare(2014)の続き。Armington vs. Melitzの比較

Q. σ=k+1なら厚生効果は同じか? 同じでないなら何が原因か?

Balistreri and Rutherford (2013)とDixon et al. (2016)で簡単に比較したところ、等価ではないことがわかっている(まあ、そうだろうね)。

では、どういう要素が乖離を生み出しているのか?

• 経常収支→ほとんど関係ない


• 1部門か多部門か→重要


• 中間投入の有無→重要


• 付加価値と中間投入財の間のネスト(CD vs. Leontief)→まあ重要

参考文献

• Arkolakis, C., Costinot, A., Rodriguez-Clare, A. (2012) "New Trade Models, Same Old Gains?" American Economic Review 102(1), 94-130.


• Balistreri, E. J., Rutherford, T. F. (2013) "Computing General Equilibrium Theories of Monopolistic Competition and Heterogeneous Firms," in: Dixon, P. B., Jorgenson, D. W., (eds.) Handbook of Computable General Equilibrium Modeling, Chapter 23, Volume 1, Elsevier: 1513-1570.


• Dixon, P., Jerie, M., Rimmer, M. (2016) "Modern Trade Theory for CGE Modelling: The Armington, Krugman and Melitz Models," Journal of Global Economic Analysis 1(1), 1-110.


• Costinot, A., Rodríguez-Clare, A. (2014) "Trade Theory with Numbers: Quantifying the Consequences of Globalization," in: Handbook of International Economics Vol. 4, Ch. 4. 197-261.