"In a recent article in the American Economic Review, Andrew K. Rose (2004) finds that countries belonging to the General Agreement on Tariffs and Trade (GATT) and its successor, the World Trade Organization (WTO), did not trade more than countries that abstained from membership. We show that Rose has overlooked a large proportion of countries to which the agreement applied and mistakenly classified them as nonparticipants, when in fact they had rights and obligations under the agreement." (Quoted from paper)