Their study focused on two education levels , college degree and post-graduate degree .
Michelacci and Schivardi are a pair of researchers who believe that identifying and comparing the relationships between an entrepreneur 's earnings and education level would determine the rate and level of success .
researchers ' study focused on two education levels , college degree and post-graduate degree .
Michelacci and Schivardi are a pair of researchers who believe that identifying and comparing the relationships between an entrepreneur 's earnings and education level would determine the rate and level of success .