Khan, Shahrukh R.; Mohammad, Irfan - Volkswirtschaftliche Fakultät, … - 1990
Education is effectively used as a discontinuous variable in studies estimating the rates of return by level of … education. We find that the normal procedure used for estimating the rate of return to broad aggregates such as secondary and …, as expected, that broad aggregations that ignore sub-levels of education result in a loss of important insights about the …