Our hypothesis is that Nigeria is going through a process of economic polarization. An analysis of this type is new for Nigeria; the limited availability of comparable data has hindered an investigation that requires data series not too close in time. The present paper tries to overcome this...

This study examines the effects of mining productivity shocks on the formal-informal duality in manufacturing and services. Using firm census data from 2014 for Ghana, we measure the rates of informality along extensive (unregistered firms) and intensive (registered firms hiring labourers 'off...

Two well established stylized facts of economic development are a strong correlation between investment and income, and large differences in investment rates across countries. Construction is the largest component of investment. This paper examines the implications of heterogeneity in...