Abstract:
"This report was commissioned by the U.S. Agency for International Development (USAID) for the Central America Regional Security Initiative (CARSI), a United States government effort primarily executed by both USAID and the U.S. Department of State Bureau of International Narcotics and Law Enforcement Affairs (INL). In preparation for this report, we performed a systematic meta-review of 43 reviews, including over 1,400 studies, to identify what works in reducing community violence. In addition, we supplemented our findings with fieldwork in El Salvador, Guatemala, Honduras, and the United States, visiting over 20 sites and conducting over 50 semi-structured interviews. We found that a few interventions, such as focused deterrence and cognitive behavioral therapy, exhibited moderate to strong effects on crime and violence and were supported by substantial evidence. A few others, such as scared straight and gun buyback programs, clearly demonstrated no or negative effects. The vast majority of programmatic interventions, however, exhibited weak or modest effects. We identified six “elements of effectiveness” shared by the most impactful interventions, including maintaining a specific focus on those most at risk for violence; proactive efforts to prevent violence before it occurs whenever possible; increasing the perceived and actual legitimacy of strategies and institutions; careful attention to program implementation and fidelity; a well-defined and understood theory of change; and active engagement and partnership with critical
stakeholders.Given the modest effects of most interventions, that violence generally clusters around a small number of places, people, and behaviors, and that violence is not displaced from those clusters when they are targeted, we reach the simple yet powerful conclusion that it is advisable to concentrate and coordinate anti-violence efforts where they matter most. We further conclude that increased attention to program implementation and evaluation is necessary. We close with four recommendations to governmental and non-governmental funders with regard to community violence in the Northern Triangle and globally. " (Author Abstract)