Pioneer investigations of the economic consequences of ethnic diversity – a ubiquitous feature of African societies – found a strong and negative correlation. The present paper revisits this « diversity burden » conjecture, by using (1) newly available, better-quality data-sets allowing for sub-national estimations and multiple robustness checks, and (2) a new instrument, a pre-colonial measure of ethnic diversity, to explore causality. We find that the impact of ethnic diversity depends on the public good and the specification considered. Overall, completely heterogeneous societies produce 3 percent less public goods than their homogeneous counterparts, a negative but more limited effect than previously found.
Séminaire en présence d'Adam George (SOAS, University of London). Adam George présente un modèle macroéconomique SFC environnemental britannique intégrant émissions de CO2 et investissements verts de tous les agents économiques. Le modèle trimestriel analyse l'impact des politiques énergétiques selon le rapport capital vert/capital conventionnel. Quatre scénarios fiscaux verts sont testés (2022-2035) : taxe carbone, investissement...