For the past ten years or so the economy of Ghana has been under severe strains. The domestic economic scene has been characterised by stagnation of production, by falling real per capita income, by ever growing inflationary pressures and by rising level of unemployment. On the external front,...

Data quality in the Penn World Tables varies systematically across countries that have different growth rates and at different stages of economic development, thus introducing measurement error correlated with variables of economic interest. We explore the seriousness of this problem with three...