Publications
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Group Violence Reduction Strategy Policy Brief
Community Gun Violence is one of the most serious issues facing US cities today. It is not only responsible for thousands of deaths and injuries every month—it hinders education, limits the effectiveness […]
Read this publicationRecent Publications
Group Violence Reduction Strategy Policy Brief
Community Gun Violence is one of the most serious issues facing US cities today. It is not only responsible for thousands of deaths and injuries every month—it hinders education, limits the effectiveness […]
Read this publicationProsecutor Initiatives to Reduce Gun Violence
Prosecutor offices can play a significant role in decreasing gun violence. An increase in gun violence across the United States has left communities and city governments uncertain about how to respond effectively. […]
Read this publicationFocused Deterrence, Strategic Management, and Effective Gun Violence Prevention
The evaluation literature suggests that focused deterrence strategies are effective in reducing gun violence. However, focused deterrence is notoriously difficult to implement and sustain. The history of focused deterrence implementation failure raises […]
Read this publicationKey Actions for Citywide Gun Violence Reduction: A Three-City Case Study
Cities that take a holistic, strategic approach to violence reduction with strong management and accountability practices can drive down violence and keep violence low. To explore this idea in depth, this case […]
Read this publicationAnalyzing the Impact of Baltimore’s Group Violence Reduction Strategy in the Western District
The team’s preliminary estimates are that, in the 18 months after its introduction in January 2022, GVRS was responsible for reducing homicides and shootings in the Western District by roughly a quarter, […]
Read this publicationDisorder Policing to Reduce Crime: An Updated Systematic Review and Meta-Analysis
Research Summary: Broken windows theory suggests that police can prevent serious crime by addressing social and physical disorder in neighborhoods. In many U.S. cities, recent increases in disorder, fear, and crime have […]
Read this publicationStreetwork at the Crossroads: An Evaluation of a Street Gang Outreach Intervention and Holistic Appraisal of the Research Evidence
Spurred by the success of public health violence interventions, and accelerated by policy pressure to reduce violence without exacerbating overpolicing and mass incarceration, streetwork programs—those that provide anti-violence services by neighborhood-based workers […]
Read this publicationPhiladelphia’s Group Violence Intervention (GVI) Strategy – A Policy Brief
In February 2023, the University of Pennsylvania Criminal Justice Police Lab (CJP) released an evaluation of the City of Philadelphia’s Group Violence Intervention (GVI) strategy. The purpose of this brief is to […]
Read this publicationAn Evaluation of the Group Violence Intervention (GVI) in Philadelphia
This evaluation suggests “the current GVI implementation in Philadelphia has been associated with significant reductions in group member involved firearm violence. The continued effectiveness of the implementation will likely depend on a range of factors, including necessary adjustments to evolving group activity and firearm violence.”
Read this publicationCrime Prevention Through Intelligence and Information Sharing: An Evaluation of an Information Intervention at the Philadelphia Police Department
“The evidence on the effectiveness of the phones is mixed. On the one hand, it is clear that a year after the phones were deployed, relatively few officers are using their phones […]
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