Publication: Evaluating the Trade Effect of Developing Regional Trade Agreements : A Semi-parametric Approach
Abstract
Many recent papers have pointed to ambiguous trade effects of developing regional trade agreements, calling for a reassessment of their economic merits. This paper focuses on 22 RTAs involving mostly developing countries and covering all the continents and use trade flows over the period 1962-2006. It proposes a two-step estimation approach to assess their trade impact: first estimate a gravity equation excluding the RTA variables, and then use the trade residuals estimated to run a kernel regression for each of the RTAs. This approach allows capturing the non-monotonic trade effects of the RTAs over time while imposing minimal structure on the model, and is flexible enough to be extended to any new RTA. As existing RTAs are deepened and new ones are being negotiated, ensuring that trade creation dominates trade diversion will be essential, particularly in the post-crisis world where resources will be limited for all countries.
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Publication Evaluating the Trade Effect of Developing Regional Trade Agreements : A Semi-parametric Approach(World Bank, Washington, DC, 2007-05)Many recent papers have pointed to ambiguous trade effects of developing regional trade agreements (RTAs), calling for a reassessment of their economic merits. The author focuses on seven such agreements currently in force in Sub-Saharan Africa (ECOWAS and SADC), Asia (AFTA and SAPTA) and Latin America (CACM, CAN, and MERCOSUR), estimating their impacts on their members' trade flows. Instead of the usual dummy variables for RTAs, he proposes a variable taking into account the number of years of membership. He then combines a gravity model with kernel estimation techniques to capture the non-monotonic trade effects while imposing minimal structure on the model. The results indicate that except for SAPTA, these RTAs have had a positive impact on their members' intra-trade over the estimation period (1960-99). AFTA seems to be the most successful among them, with an estimated positive impact on its members' imports from the rest of the world (hence no trade diversion), but its impact on their exports to the rest of the world is rather limited. During its first 10 years of existence, ECOWAS appears to have had a positive impact on its members' imports from the rest of the world (hence no trade diversion), but this positive impact vanished over time. SAPTA's negative impact on its members' intra-trade is probably an implicit effect of the India-Pakistan tensions over the estimation period.Publication Do Regional Trade Pacts Benefit the Poor? An Illustration from Dominican Republic--Central American Free Trade Agreement in Nicaragua(2009)This paper provides an ex-ante assessment of the poverty and income distribution impacts of the Central American Free Trade Area agreement on Nicaragua. A general equilibrium macro model is used to simulate trade reform scenarios and estimate their price effects, while a micro module maps these price changes into real income changes at the individual household level. The final impact on poverty is not too large, but its dispersion across households is significant and should be considered when designing compensatory policies. A main policy message is that Nicaragua should consider enlarging its own liberalization to countries other than the United States to boost trade-induced poverty reductions.Publication Preferential Trade Agreements and Their Role in World Trade(2010)This paper investigates the effects of preferential trade agreements (PTAs) on bilateral trade using a comprehensive data base of PTAs in force and a detailed matrix of world trade. Total trade between PTA partners is a poor proxy for preferential trade (trade in tariff lines where preferences are likely to matter): while the former was one-third of global trade in 2000-2002, the latter was between one-sixth and one-tenth. Gravity model estimates indicate that using total trade to assess the impacts of PTAs leads to a significant downward bias in the PTA coefficient: the semi-elasticity of trade with respect to PTA membership rises from 87% for total trade to 119% for preferential trade. Product exclusions and long phase-in periods significantly limit preferential trade; the marginal impact of South-South agreements on preferential trade is much higher than North-South PTAs, while the effect of North-North agreements is insignificantly different from zero.Publication East Asian Preferential Trade Agreements in Services : Liberalization Content and WTO Rules(2008)The past seven years have seen a rapid proliferation of preferential trade agreements (PTAs) in the East Asian region. Many of the recently concluded PTAs are comprehensive in their coverage, seeking not only the dismantling of barriers to trade in goods but also the liberalization of trade in services. This paper offers an assessment of this recent wave of services agreements in East Asia, focusing on their liberalization content and their compliance with WTO rules on regional integration. It draws on a database in which the authors recorded the value added of PTA liberalization undertakings relative to pre-existing multilateral services commitments. Among other things, this database is used to empirically assess the effect of the scheduling approach on the depth and breadth of liberalization undertakings.Publication Does Regionalism Affect Trade Liberalization toward Nonmembers?(2008)We examine the effect of regionalism on unilateral trade liberalization using industry-level data on applied most-favored nation (MFN) tariffs and bilateral preferences for ten Latin American countries from 1990 to 2001. We find that preferential tariff reduction in a given sector leads to a reduction in the external (MFN) tariff in that sector. External liberalization is greater if preferences are granted to important suppliers. However, these "complementarity effects" of preferential liberalization on external liberalization do not arise in customs unions. Overall, our results suggest that concerns about a negative effect of preferential liberalization on external trade liberalization are unfounded.
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