The WTO Trade Effect
This paper re-examines the GATT/WTO membership effect on bilateral trade flows, using nonparametric methods including pair-matching, permutation tests, and a Rosenbaum (2002) sensitivity analysis. Together, these methods provide an estimation framework that is robust to misspecification bias, allows general forms of heterogeneous membership effects, and addresses potential hidden selection bias. This is in contrast to most conventional parametric studies on this issue. Our results suggest large GATT/WTO trade-promoting effects that are robust to various restricted matching criteria, alternative GATT/WTO indicators, non-random incidence of positive trade flows, inclusion of multilateral resistance terms, and different matching methodologies.
Trade flow, Treatment effect, Matching, Permutation test, Signedrank test, Sensitivity analysis
Journal of International Economics
CHANG, Pao Li and Lee, Myoung-Jae, "The WTO Trade Effect" (2011). Research Collection School of Economics (Open Access). Paper 1373.