Gravity equations have been used for more than 50 years to estimate ex post the partial effects of trade costs on international trade flows, and the well-known - and traditionally presumed exogenous - "trade-cost elasticity" plays a central role in computing general equilibrium trade-flow and...

Three years ago, very few economists would have imagined that one of the newest and fastest growing research areas in international trade is the use of quantitative trade models to estimate the economic welfare losses from dissolutions of major countries' economic integration agreements (EIAs)....

Despite widespread anecdotal evidence that lower trade barriers increase international trade, there is little firm quantitative evidence of the ‘trade-cost elasticity’ of trade flows, one of the two key aggregate statistics that have recently been identified as sufficient to quantify the...