Actual, and potential competition is a powerful source of discipline on the pricing behavior of firms with market power. The authors develop a simple model that shows that the effects of new entry, and import competition on industry price-cost markups, depend on country size. The authors...

Most goods imported from developing countries, enter Quad markets duty-free, and, average tariffs in Quad markets are very low. But tariffs for some commodities are over one hundred percent. Such"tariff peaks"are often concentrated in products developing countries want to export: agricultural,...