What is the role of natural resources in economic performance? Are there any special conditions in which natural resources can act as the engine of growth? Are natural resources a curse? In this paper we present a model where natural resources have a positive effect on level of income and a...

Using a large dataset of countries, covering the period 1962-2000, this paper analyzes the main determinants of export diversification (concentration). We explore the role of several factors and we use three different indicators of export concentration. We find robust evidence across...

Research and development (R&D) has been considered a source of growth in productivity starting from Schultz (1953). Since then, significant research has studied this relationship at the firm, industry and country level. However, at the country level, most of the empirical studies assessing the...