Like other fragile sub-Saharan African countries, Côte d'Ivoire, Guinea, Liberia, and Sierra Leone are seeking to harness their natural resource potential in the context of ambitious development strategies. This study investigates options for scaling up public investment and expanding social...

For US postwar data, the paper explains central consumption, labor, investment and output correlations and volatilities along with output growth persistence by including a human capital investment sector and a variable physical capital utilization rate. Strong internal "amplication" results from...