Search the Matrix

What strategies can be effective in reducing crime and disorder in policing? The Evidence-Based Policing Matrix is a research-to-practice translation tool that organizes moderate to very rigorous evaluations of police interventions visually, allowing agencies and researchers to view the field of research in this area. The Matrix is updated with all qualifying studies each year.

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Neighborhood – Azrael et al. (2013)

District-level homicide review process led to decrease in monthly homicide counts

Neighborhood – Berk & MacDonald (2010)

Broken windows approach to deal with homeless encampments associated with meaningful reduction in violent, property, and nuisance crimes

Neighborhood – Bynum et al. (2014)

Comprehensive approach to reduce gun violence led to significant success

Neighborhood – Corsaro et al. (2012)

Pulling levers intervention: Identification of drug and violence hot spots followed by notification and resource delivery to individuals convicted of nonviolent nonfelony crimes

Neighborhood – Koper et al. (2016)

Multi-agency partnership focused on enforcement, prosecution, and community improvement associated with reduction in crime and violence

Neighborhood – Krimmel & Mele (1998)

Targeting stolen vehicle dump sites leads to reduced auto theft

Neighborhood – Lancashire Constabulary (2008)

Problem-oriented policing with the SARA model reduced crime and calls for service without displacing crime to adjacent areas

Neighborhood – McGarrell et al. (2001) [Targeted Offender Approach]

Targeted offender approach involving pedestrian and traffic stops of suspicious individuals and home visits led to a reduction in firearm-related violence.

Neighborhood – McGarrell et al. (2015)

Violence reduction task force employing targeted patrol and enforcement at violent gangs and areas led to a significant decline in gun crime in treatment precincts relative to control

Neighborhood – Robin et al. (2020)

Community Safety Partnership (CSP) reduced property crimes, overall crime rates, and calls for service in public housing developments

Neighborhood – Sherman et al. (1995)

Directed patrol to increase gun detection leads to significant increase in gun seizures and decline in gun-related crime.

Neighborhood – Tita et al. (2003)

Violence declined during and after the pulling levers intervention

Neighborhood – Uchida & Swatt (2013) [Chronic Location and Offender Components]

Targeting violent repeat offenders in specific target areas found successful intervention when mixed hot spots patrol with focused offender tactics.

Neighborhood – Johnson et al. (2017)

Target hardening in burglary-hit neighborhoods creates modest prevention effects in some places

Neighborhood – Banerjee et al. (2019)

Rotating sobriety checkpoints led to significant decreases in nighttime traffic crashes and deaths. However, there was some evidence to suggest that daytime crashes increased in these areas as well

Neighborhood – Blair et al. (2022)

A program enhancing coordination among local and state agencies led to significant reductions in unresolved and violent disputes at the community level, but not at the household level.

Neighborhood – Bogliaccini et al. (2022)

Police raids conducted in high-crime neighborhoods did not significantly impact violent crimes and had mixed effects on robberies.

Neighborhood – Josi et al. (2000)

Larceny and burglary drop in beats with increased traffic stops compared to routine patrol

Neighborhood – McCabe (2009)

One of two narcotics enforcement initiatives was successful in reducing crime

Neighborhood – Nunn et al. (2006)

Covert drug trafficking interdiction associated with an overall crime decline in target area, but an increase in drug-related calls for service

Neighborhood – Guseynov (2010)

Initiative that concentrated resources and problem-solving activities on crime-prone areas did not have significant effects on crime.

Neighborhood – Novak et al. (1999)

No decline in burglary or robbery following proactive disorder enforcement

Neighborhood – Pace (2010)

Order maintenance unit had no effect on offenses

Neighborhood – Sviridoff et al. (1992)

Crackdown on crack market, but no change in violent crime rate

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