Whither the terms of trade? An elaboration of the Prebisch-Singer hypothesis

Movements in the prices of primary products and manufacturedgoods are analysed using a model that introduces differencesin wage and price determination between primary production andmanufacturing. Wages and prices in primary production are treatedas competitively determined, while prices and wages in manufacturingare determined by mark-up pricing and union-employer bargaining,respectively. The objective is to capture the influence of structuraldifferences between manufacturing and primary production onthe terms of trade between industrialised and developing worldsas discussed in the seminal contributions to the developmentliterature by Raul Prebisch and Hans Singer. The model is estimatedusing price and wage data from the post-World War II period.Support is found for the Prebisch-Singer hypothesis; however,our estimates suggest that, during periods of particularly rapidmanufacturing growth, there have been intervals of net improvementin the terms of trade of primary producers.