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...

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...