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In 2013--in the wake of the tragic shooting at Sandy Hook Elementary School--Johns Hopkins University Press published Reducing Gun Violence in America, a collection of essays written by the world's leading experts on gun violence. Updated Evidence and Policy Developments on Reducing Gun Violence in America follows up on the state of American gun violence by analyzing new data, research, and policy developments one year after Sandy Hook. Over the course of ten substantive chapter addendums, contributors bring readers up-to-date on such varied topics as mental illness, domestic violence, background checks, illegal gun sales, and personalized guns. They describe the recent policy measures that have been enacted and suggest additional approaches that may help stem the violence. An essential companion to Reducing Gun Violence in America, the reliable, empirical research and legal analysis in this e-book will help lawmakers, opinion leaders, and concerned citizens identify policy changes to address gun violence, which takes an average of more than 80 lives every day in the United States.

AbstractFirearms increase the risk of lethality in violent intimate relationships. Policies that restrict access to firearms by respondents to civil domestic violence protective orders (DVROs) are associated with reductions in intimate partner homicide, yet there is scant literature about how such prohibitions are implemented. We document how four localities are implementing gun possession prohibitions that result from civil and criminal restraining orders and domestic violence misdemeanor convictions; and assess the findings in the context of Kingdon's agenda setting framework. We identified four jurisdictions where gun dispossession of prohibited domestic violence offenders was underway and collected data through in-depth interviews, site visits, and documents. We coded the data, identified explanatory themes, and compared the findings to Kingdon's framework. The four jurisdictions have policies ranging from no state laws restricting domestic violence offenders' access to guns to comprehensive state laws. We describe implementation initiatives to dispossess prohibited people of their guns in the four jurisdictions, two distinct implementation models through which gun dispossession occurs, and an expanded application of Kingdon's model. In each jurisdiction, we identified one or more individuals who championed implementation. Policies that prohibit domestic violence offenders from possessing guns are promising, and possible in diverse settings and jurisdictions. Here we provide insight into implementation efforts in four jurisdictions, emphasize the role of individuals in prioritizing implementation, and highlight the potential to realize these restrictions across states with different laws. Focusing on implementation is a much-needed paradigm shift that complements the traditional focus on passing domestic violence prevention laws.

Objectives. We examined the effects of key political institutional factors on the advancement of state-level clean indoor air laws.

Cities are increasingly adopting CeaseFire, an evidence-based public health program that uses specialized outreach workers, called violence interrupters (VIs), to mediate potentially violent conflicts before they lead to a shooting. Prior research has linked conflict mediation with program-related reductions in homicides, but the specific conflict mediation practices used by effective programs to prevent imminent gun violence have not been identified. We conducted case studies of CeaseFire programs in two inner cities using qualitative data from focus groups with 24 VIs and interviews with eight program managers. Study sites were purposively sampled to represent programs with more than 1 year of implementation and evidence of program effectiveness. Staff with more than 6 months of job experience were recruited for participation. Successful mediation efforts were built on trust and respect between VIs and the community, especially high-risk individuals. In conflict mediation, immediate priorities included separating the potential shooter from the intended victim and from peers who may encourage violence, followed by persuading the parties to resolve the conflict peacefully. Tactics for brokering peace included arranging the return of stolen property and emphasizing negative consequences of violence such as jail, death, or increased police attention. Utilizing these approaches, VIs are capable of preventing gun violence and interrupting cycles of retaliation.

In 2 recent cases—with important implications for public health practitioners, courts, and researchers—the US Supreme Court changed the landscape for judging the constitutionality of firearm laws under the Constitution's Second Amendment.

We conducted a review of studies on the effects of hospital-based violence intervention programs (HVIPs) on subsequent involvement in violence as a victim or perpetrator that included a nontreated control group. We identified seven randomized controlled trials (RCTs) and six observational studies. Most HVIPs evaluated relied principally on credible messengers to engage potential participants and intensive case management to provide social services. Evidence of linkage of HVIPs to community violence intervention programs was lacking. RCTs of the most robust HVIPs showed some evidence of protective effects, but overall evidence of reduced risks for violence was mixed. RCTs were underpowered, and all but one were vulnerable to selection bias. Stronger interventions and research methods are needed to advance our understanding of the potential for HVIPs to reduce risks for future violence.

Objectives. To examine gun storage practices and factors influencing those practices among gun owners. Methods. We conducted a nationally representative online survey of US gun owners (n = 1444) in 2016 to assess gun storage practices and attitudes, factors influencing storage practices, and groups that might effectively communicate regarding safe storage. We generated descriptive statistics by using cross-tabulations and used logistic regression to estimate characteristics that influenced safe storage practices. Results. Forty-six percent of gun owners reported safely storing all of their guns. Factors associated with higher odds of reporting safe storage were having a child in the home (adjusted odds ratio [AOR] = 1.44; 95% confidence interval [CI] = 1.03, 2.03), only owning handguns (AOR = 1.84; 95% CI = 1.24, 2.73), and reporting that storage decisions were influenced by a gun safety course (AOR = 2.05; 95% CI = 1.54, 2.74) or discussions with family members (AOR = 1.39; 95% CI = 1.05, 1.86). Gun owners ranked law enforcement, hunting or outdoors groups, active-duty military, and the National Rifle Association as most effective in communicating safe storage practices. Conclusions. Public health campaigns to promote safe gun storage should consider partnering with groups that garner respect among gun owners for their experience with safe use of guns.

After the school shooting at Marjory Stoneman Douglas High School in Parkland, Florida in 2018, there was an increase in gun violence prevention-related advocacy. While much of this recent political activity and engagement was led by young adults, little is known about support for specific gun policies within this age group. This study uses data from two nationally representative surveys fielded in 2017 and 2019 to compare public support for gun policies: (1) between young adults age 18–29 years and adults age 30 and older, and (2) between young adults in 2017 and young adults in 2019, before and after the Parkland shooting. Relative to adults age 30 and older, young adults had lower support for 16 of 20 gun violence prevention policies examined. Public support was largely unchanged between 2017 and 2019 among survey respondents ages 18–29; however, support for requiring a safety test for concealed carry decreased significantly among young adults between 2017 and 2019. Despite owning fewer guns and finding gun violence prevention important generally, young adults appear to have lower support for policies that regulate guns compared to older adults.

Gun policy is a prominent topic of debate in the 2020 US election cycle. Tracking evolving public attitudes about gun policy is critical in this context. Using data from the National Survey of Gun Policy fielded in 2013, 2015, 2017, and 2019 by the Johns Hopkins Center for Gun Policy and Research, we examined trends in support for more than two dozen gun policies over time by gun ownership status and political party affiliation, and across states. Most policies that we considered had majority support across the study period. We identified increases in public support over time for licensing and universal background checks of handgun purchasers, stronger regulation of gun dealers, and extreme risk protection orders. Gun owners and non–gun owners were highly supportive of requiring tests to demonstrate safe handling before carrying a concealed weapon, but there were large differences in support for other concealed carry policies by gun ownership status. A new item included in the 2019 survey showed that 84 percent of Americans supported requiring first-time gun purchasers to take a safety course. While gun policy continues to be characterized as highly polemical, large majorities of both gun owners and non–gun owners strongly support a range of measures to strengthen US gun laws.

School shootings tear the fabric of society. In the wake of a school shooting, parents, pediatricians, policymakers, politicians, and the public search for "the" cause of the shooting. But there is no single cause. The causes of school shootings are extremely complex. After the Sandy Hook Elementary School rampage shooting in Newtown, Connecticut, we wrote a report for the National Science Foundation on what is known and not known about youth violence. This article summarizes and updates that report. After distinguishing violent behavior from aggressive behavior, we describe the prevalence of gun violence in the United States and age-related risks for violence. We delineate important differences between violence in the context of rare rampage school shootings, and much more common urban street violence. Acts of violence are influenced by multiple factors, often acting together. We summarize evidence on some major risk factors and protective factors for youth violence, highlighting individual and contextual factors, which often interact. We consider new quantitative "data mining" procedures that can be used to predict youth violence perpetrated by groups and individuals, recognizing critical issues of privacy and ethical concerns that arise in the prediction of violence. We also discuss implications of the current evidence for reducing youth violence, and we offer suggestions for future research. We conclude by arguing that the prevention of youth violence should be a national priority. (PsycINFO Database Record