Have Trade Policy Reforms Led to Greater Openness in Developing Countries?

The developing countries that began trading more openly in the 1980s did so incrementally-shock therapy was uncommon. Asian countries led in trade reform and openness, so their export-led growth performance was not surprising. African countries trailed in reform and have still not become as open as other countries. Developing countries experienced a revolution in trade policy in the 1980s and 1990s, but it is unclear how much real openness increased. After all, they had started with multiple, often redundant, trade restrictions. And it is unclear how changes in openness should be measured. The most appropriate measure of openness is based on imports of consumer goods, argue Andriamananjara and Nash, since these imports commonly face the biggest trade barriers. After developing several such measures, including a measure of the change in tariff equivalent protection, they explore the recent evolution of trade policy, using readily available trade data. Openness has developed incrementally rather than overnight. In the early stages of adjustment, barriers to imports tended not to be reduced much. At first, the net reduction of incentives to produce import substitutes was minor, especially when currency depreciation is considered. Recently import barriers have been reduced more substantially, and since there has been little currency depreciation, incentives to produce import substitutes have declined. Shock therapy was uncommon. A few countries moved quickly to eliminate nontariff barriers to imports and to adopt low, fairly uniform tariffs. But most countries tended to peel away redundant layers of trade barriers, one at a time. They usually began with the barriers embodied in rationing and exchange controls, proceeded to nontariff measures, and finally reduced tariffs. Each step may have reduced protection a bit but the big reductions appar...