Developing countries are concerned that multilateral tariff reductions will harm their agricultural sectors because of preference erosion. The findings in this report suggest that although this may indeed be a problem for some countries in some sectors, factors other than preferential schemes...

Developing countries are concerned that multilateral tariff reductions will harm their agricultural sectors because of preference erosion. The findings in this report suggest that although this may indeed be a problem for some countries in some sectors, factors other than preferential schemes...

I use the quasi experimental nature of the roll-out of the mobile phone network in Mozambique to estimate the impact of search costs on the dispersion of maize prices and transport costs. The introduction of mobile phone services from 1997 to 2009 explains a 4.5-11% percent reduction in price...