RT Article T1 Deregulation of public civilian gun carrying and violent crimes: a longitudinal analysis 1981–2019 JF Criminology & public policy VO 23 IS 4 SP 833 OP 861 A1 Doucette, Mitchell L. A2 Crifasi, Cassandra A2 McCourt, Alexander D. A2 Ward, Julie A. A2 Fix, Rebecca L. A2 Webster, Daniel W. LA English YR 2024 UL https://krimdok.uni-tuebingen.de/Record/1914427831 AB Research Summary We utilized the synthetic difference-in-difference method to estimate the impact of adopting a permitless concealed carry weapons (CCW) law on rates of assaults, robberies, and homicides committed with a firearm and by other means, as well as weapons arrests, from 1981 to 2019. We stratified permitless CCW laws by whether they previously prohibited violent misdemeanants from obtaining a CCW permit or previously required live firearm training to obtain a permit prior to law adoption. Findings robust to sensitivity analyses suggest that states that lost a training requirement to obtain a CCW permit had 21 additional gun assaults per 100,000 population (SE = 5.2) (32% increase). Policy Implications In the wake of the Supreme Court's decision in New York State Rifle & Pistol Association, Inc. v. Bruen, states should implement CCW permitting law provisions that may reduce the risk of firearm violence. Requiring live firearm training prior to carry a concealed weapon may attenuate negative health impacts of deregulation associated with permitless CCW laws. K1 Firearms K1 Policy Evaluation K1 weapons-related arrests DO 10.1111/1745-9133.12638