Research Handbooks on the WTO series
Edited by Pierre Sauvé and Martin Roy
Chapter 5: Going beyond the 0/1 dummy: Estimating the effect of heterogeneous provisions in services agreements on services trade
The proliferation of preferential trade agreements in services (services PTAs) and the improved availability of data on bilateral services trade flows have resulted in a growing literature on the theoretical and empirical assessment of services trade effects. However, this literature has not considered the different types of provisions found in services PTAs while estimating trade effects. We address this issue by taking into account the heterogeneity of provisions found in services PTAs. Our results suggest that accounting for this heterogeneity reduces the magnitudes of the estimated trade effects. This finding is robust to estimations involving only positive and those incorporating zero trade flows as well as to sample coverage (all, EU, non-EU, North-North, North-South).
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