Using the gravity equation to differentiate among alternative theories of trade: another look

Author: Siliverstovs Boriss   Schumacher Dieter  

Publisher: Routledge Ltd

ISSN: 1466-4291

Source: Applied Economics Letters, Vol.14, Iss.14, 2007-11, pp. : 1065-1073

Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.

Previous Menu Next

Abstract

This study compares two alternative approaches-the traditional ordinary least square (OLS) and the Poisson Quasi Maximum Likelihood (PQML) procedures-to estimation of the home market effects for the heterogeneous, the reference priced and the homogeneous goods in the gravity model derived in Feenstra et al. (2001). Despite our findings that the PQML estimation results oftentimes (significantly) differ from those obtained by the OLS procedure, both estimation procedures largely lead to the qualitatively similar conclusions on the existence of the home market effect for the different types of goods with several exceptions.