Tariff protection and nontariff barriers are higher in developing countries than in industrial nations. The tendency of protection to decline with a higher level of development can be explained by the role of import taxes in government revenue, by export pessimism, and by differential treatment...

Jan Tinbergen's scientific writings cover six main areas of research. His articles in De Economist represent these areas; in some cases the contributions to De Economist were of a pioneering nature (business cycles, economic models, economic integration); in others De Economist was the first or...