1. Léonce Ndikumana, PhD, corresponding author, Distinguished Professor of Economics, and Director of the African Development Policy Program at the Political Economy Research Institute (PERI), University of Massachusetts, Amherst. Email: ndiku@umass.edu;
2. Karmen Naidoo, PhD candidate, Department of Economics, University of Massachusetts, Amherst. Email: knaidoo@umass.edu;
3. Francisco Perez, PhD candidate, Department of Economics, University of Massachusetts, Amherst. Email: fdperez@umass.edu.