He has also written a number of articles, many with Yale Law Professor Ian Ayres, exploring the impact on crime of laws allowing citizens to carry concealed handguns. A series of papers with economist Justin Wolfers questioned studies that claimed to find a deterrent effect of capital punishment on the rate of murder. Donohue also authored a major study of the operation of the Connecticut death penalty system that was widely cited in the legislative debate that led to the abolition of the death penalty in Connecticut in April 2012. Notes 1953 births Living people Stanford Law School faculty American lawyers Harvard Law School alumni Academic journal editors Yale Graduate School of Arts and Sciences alumni Economists from New York (state) Hamilton College (New York) alumni Fellows of the American Academy of Arts and Sciences 21st-century American economists Law and economics scholars John M. Olin Foundation