Do firearm purchase delay laws reduce aggregate homicide levels? Using quasi-experimentalevidence from a 6-month countrywide gun demand shock starting in late 2012, we showthat U.S. states with legislation preventing immediate handgun purchases experiencedsmaller increases in handgun sales. Our...

We provide the first quasi-experimental estimates of variation in suicide impulsivity by age by examining the impact of firearm purchase delay laws by age. Prior studies of firearm purchase delay laws use traditional two-way-fixed-effects estimation, but we demonstrate that bias due to...