To those pro-gun advocates who think that more concealed weapons will reduce crime, please stop embarrassing yourselves and do some research. I’m going to help you along, by providing some studies by very prestigious researchers in the US. I found these while debating a gentleman who thought that John Lott, Jr’s book, More Guns, Less Crime, was so correct and unimpeachable. Interestingly, John Lott, Jr. has a PhD in economics, not social science or other research specialty, and was employed by the American Enterprise Institute, a far-right, conservative think-tank.
Mr. Lott and his methodologies have been highly ridiculed and debunked by prestigious researchers around the country, including the following studies:
- Most of these studies contend that there seems to be little or no effect on crime from the passage of license-to-carry laws. Some, such as Donohue’s 2003 study, find a temporary increase in aggravated assaults.
- Rutgers sociology professor Ted Goertzel stated that “Lott’s massive data set was simply unsuitable for his task”, and that he “compar[ed] trends in Idaho and West Virginia and Mississippi with trends in Washington, D.C. and New York City” without proper statistical controls.
- Goertzel also points out that econometric methods (such as the Lott & Mustard RTC study or the Levitt & Donohue abortion study) are susceptible to misuse and can even become junk science.
- Ian Ayres, Yale Law School, and John Donohue, Stanford Law School, “Shooting Down the More Guns, Less Crime Hypothesis,” Stanford Law Review, 2003. This study found a temporary increase in aggravated assaults.
- Jens Ludwig, Georgetown University, “Concealed-Gun-Carrying Laws and Violent Crime: Evidence from State Panel Data”, International Review of Law and Economics, 1998.
- Dan Black and Daniel Nagin, “Do ‘Right-to-Carry’ Laws Deter Violent Crime?” Journal of Legal Studies, Vol. 27, No. 1, pp. 209–213 (January 1998).
- Mark Duggan, University of Chicago, “More Guns, More Crime,” National Bureau of Economic Research, NBER Working Paper No. W7967, October 2000, later published in Journal of Political Economy.
- Tomislav V. Kovandzic and Thomas B. Marvell, “Right-To-Carry Concealed Firearms and Violent Crime: Crime Control Through Gun Decontrol?” Criminology and Public Policy 2, (2003) pp. 363–396.
- John J. Donahue III, Stanford Law School, ‘The Final Bullet in the Body of the More Guns, Less Crime Hypothesis’, Criminology and Public Policy, 2003.
- John Donohue and Ian Ayres. “More Guns, Less Crime Fails Again: The Latest Evidence from 1977–2006″ Econ Journal Watch 6.2 (2009): 218-238.
These are just a few of the many studies that oppose the Lott junk science approach to research.
In response to the dispute surrounding missing data that Lott referred to, in regard to a study he said he had performed in 1996, Lott created and used “Mary Rosh” as a sock puppet, to defend his own works on Usenet and elsewhere. After investigative work by blogger Julian Sanchez, Lott admitted to use of the “Mary Rosh” persona. Sanchez also pointed out that Lott, posing as “Mary Rosh”, not only praised his own academic writing, but also called himself “the best professor I ever had”.
Many commentators and academics accused Lott of violating academic integrity, noting that he praised himself while posing as one of his former students, and that “Mary Rosh” was used to post a favorable review of More Guns, Less Crime on Amazon.com. Lott has claimed that the “Mary Rosh” review was written by his son and wife. ”I probably shouldn’t have done it—I know I shouldn’t have done it—but it’s hard to think of any big advantage I got except to be able to comment fictitiously,” Lott told the Washington Post in 2003.