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Alonso De Gortari, Princeton University Print
Tuesday, 02 April 2019, 14:00 - 15:15

Alonso De Gortari, Princeton University

Disentangling Global Value Chains

Abstract: The patterns of production underlying the recent rise of global value chains (GVCs) have become increasingly complex. NAFTA supply chains, for example, are now deeply integrated: Using Mexican customs data, I €find that exports to the U.S. use a much higher share of American inputs than exports to other countries. However, the conventional framework used to measure GVCs ignores this heterogeneity since it assumes that all output uses the same input mix. I develop a new framework that combines input-output data with additional information on supply chain linkages in order to construct GVCs reƒflecting the use of inputs observed in the lattŠer. Improving measurement mattŠers quantitatively since it a‚ffects both value-added trade measures and counterfactual experiments: I show that incorporating Mexican customs data raises the estimated share of U.S. value in U.S. imported Mexican manufactures from 17% to 30% and doubles the U.S. welfare cost of a NAFTA trade war. 

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