A general theoretical and empirical model of the impact of regulation on supply and demand (prices and quantities) is developed in this paper. The regulation of midwifery services—of certified nurse-midwives (CNMs)—relative to obstetricians (OBs) is analyzed within this framework....

This paper examines empirically the state-level impact of capital punishment on multiple murder rates for the period 1995–1999. In baseline tests—tests employing mixed panel data and using an estimation technique combining aspects of both fixed- and random-effects models—we show that...