This study employs a four-equation regional growth model to examine the simultaneous relationships among changes in population, employment, per capita income, and environmental regulations for the 420 counties in Appalachia. The results reveal that initial conditions for environmental...

Using data envelopment analysis (DEA), the authors investigate the productivity changes of 42 African countries by computing the Malmquist productivity indices. Subsequently, the measured Malmquist productivity indices become the dependent variables of a pooled truncated regression. The point...