Interactions between Modes of Supply of Trade in Service: A Econometric Test

According to the GATS, services can be traded through four different modes of supply, and there is much evidence to indicate interdependence across these four modes in services trade. So it is more complicated when constructing policy of trade in service than trade in goods. With service US export data and econometric methods, we take an econometric study to find what the intrinsic relations and quantify of these effects, corresponding policies are also concluded.