This comment makes three observations about Donohue and Levitt's paper on abortion and crime (Quarterly Journal of Economics 119(1) (2001), 249-275). First, there is a coding mistake in the concluding regressions, which identify abortion's effect on crime by comparing the experiences of...

Research using U.S. manufacturing data finds that job destruction fluctuates more over time than job creation, but some new data indicate that this behavior is not shared in growing sectors, where job creation varies more. An explanation for this finding based on the interaction between...