9 The CDC study examined gun and ammunition bans, waiting periods, background checks, lock-up your safety laws, plus much more. The inescapable conclusion was that the "evidence was insufficient" to show that such gun restrictions reduced crime rates. [Centers for Disease Control and Prevention, "First Reports Evaluating the Effectiveness of Strategies for Preventing Violence: Early Childhood Home Visitation and Firearms Laws," Morbidity and Mortality Weekly Report (October 3, 2003), vol. 52(No. RR-14):14-18.] It should be noted that Dr. John’s Lott research—made widely available in More Guns, Less Crime (see supra note 4)—was part of the data examined by the CDC. The agency concluded there was no evidence to support the idea that "shall issue" carry laws reduce crime. Despite the agency’s vote of no confidence in Lott’s data, his research has been verified by other independent works, such as the one published in the Stanford Law Review. [Florenz Plassmann and John Whitley, "Confirming ‘More Guns, Less Crime,’" Stanford Law Review (April 16, 2003), vol. 55:1313.]
This law review article by Plassmann and Whitley cites several other studies showing that concealed carry laws have made a positive impact on crime rates—in some cases, finding benefits much greater than what was reported in Lott’s research. Those studies include the following: William Alan Bartley & Mark A. Cohen, The Effect of Concealed Weapons Laws: An Extreme Bound Analysis, 36 ECON. INQUIRY 258, 258-65 (1998); Stephen G. Bronars and John R. Lott, Jr., Criminal Deterrence, Geographic Spillovers, and Right-to-Carry Laws, AM. ECON. REV., May 1998, at 475-79; John R. Lott, Jr. & John E. Whitley, Safe-Storage Gun Laws: Accidental Deaths, Suicides, and Crime, 44 J.L. & ECON. 659, 659-89 (2001); Tomas B. Marvell, The Impact of Banning Juvenile Gun Possession, 44 J.L. & ECON. 691, 691-714 (2001); Carlisle E. Moody, Testing for the Effects of Concealed Weapons Laws: Specification Errors and Robustness, 44 J.L. & ECON. 799, 799-813 (2001); David B. Mustard, The Impact of Gun Laws on Police Deaths, 44 J.L. & ECON. 635, 635-58 (2001); David E. Olson & Michael D. Maltz, Right-to-Carry Concealed Weapon Laws and Homicide in Large U.S. Counties: The Effect on Weapon Types, Victim Characteristics, and Victim-Offender Relationships, 44 J.L. & ECON. 747, 747-70 (2001); Florenz Plassmann & T. Nicolaus Tideman, Does the Right to Carry Concealed Handguns Deter Countable Crimes? Only a Count Analysis Can Say, 44 J.L. & ECON. 771, 771-98 (2001); Eric Helland & Alexander Tabarrok, Using Placebo Laws to Test "More Guns, Less Crime": A Note (Univ. of Chi. Graduate Sch. of Bus., Working Paper, 2002).