Depictions of Firearm Violence Perpetrators and Support for Firearm Policies: An Experimental Survey Analysis of Mental Illness and Criminal Background

We used an experimental study design with newspaper vignettes to examine how characteristics of gun violence perpetrators including mental illness and previous incarceration influence three categories of firearm policy support in a national sample of U.S. adults ( N = 3,387). Depictions of mass shootings elicit greater support for firearm policies than other types such as suicides, accidents, or street-level homicides. Further, depictions of mental illness and previous incarceration increase support for policies regulating who may legally own, purchase, and possess firearms. Demographic characteristics of perpetrators such as gender and race largely do not affect public policy support, although personal characteristics of respondents themselves are predictive of support.