In 1997, Lott and Mustard published an important paper which found that right-to-carry concealed weapons laws reduce violent crime. Although Lott and Mustard appear to do all possible variations of the analysis, a closer reading reveals that the study might suffer from several possibly important...

In an article published in 2011, Aneja, Donohue and Zhang found that shall-issue or right-to-carry (RTC) concealed weapons laws have no effect on any crime except for a positive effect on assault. This paper reports a replication of their basic findings and some corresponding robustness checks,...

There are a large number of studies indicating that “shall-issue” laws reduce crime. Only one study, by Ayres and Donohue, implies that these laws lead to an overall increase in crime. We apply an improved version of the Ayres and Donohue methodology to a more complete data set. We find that...