NBER Publications by Alexandria Zhang

For over a decade, there has been a spirited academic debate over the impact on crime of laws that grant citizens the presumptive right to carry concealed handguns in public – so-called right-to-carry (RTC) laws. In 2005, the National Research Council (NRC) offered a critical evaluation of the “More Guns, Less Crime” hypothesis using county-level crime data for the period 1977-2000. 17 of the 18 NRC panel members essentially concluded that the existing research was inadequate to conclude that RTC laws increased or decreased crime. One member of the panel, though, concluded that the NRC's panel data regressions supported the conclusion that RTC laws decreased murder. We evaluate the NRC evidence, and improve and expand on the report’s county data analysis by analyzing an additional six y...