This chapter offers a selective survey of the gravity equation (GE) in international trade. This equation started in the Sixties as a purely empirical proposition to explain bilateral trade flows, without little or no theoretical underpinnings. At the end of the Seventies, the GE was...

We test the relationship between the size of regional trade agreements (RTA) and openness by using a gravity equation with multilateral trade factors. Our sample includes eleven RTAs, seven with constant membership and four with expanding membership. Regional trade bias declines with the size of...

We show that statistically and economically significant heterogeneity exists in the distance elasticity in trade gravity models. Distance elasticities critically depend on whether trading partners belong to the OECD and whether they are Christian or Islam countries

In the gravity equation of international trade, bilateral trade flows are regressed on trading partners' income and the distance that separates them along with other variables. This widely used equation is traditionally estimated by the ordinary least squares method. We employ an alternative...