Market structure and U.S. trade flows

Using samples of input-output table detailed industries, we test the impact of various elements of market structure on U.S. trade flows, at the industry level, holding factor proportions constant. Industry demand characteristics and the extent of scale economies have significant impacts on trade flows. Labor intensity at the industry level has the effects on trade flows which are predicted by the factor proportions theory. Capital intensity increases both import and export flows; this result, together with certain others, suggests the importance of trade among industrialized countries in producer goods.