ABSTRACT
Conventionally commodity and geographic concentration are thought to be important factors contributing to the instability in export earnings of the developing countries. Empirical investigations have, however, provided little support for this proposition. Moving away from the customary cross-country methods of measurement, this paper examines the relationship between the forms of concentration and export instability for each country in a sample of 52 developing countries. The results obtained suggest that there are causal relationships for a wide range of countries.
