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John Jay College Research and Evaluation Center

John Jay College Research and Evaluation Center

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    September 1, 2026 JohnJayREC

    Responding to Firearm Possession Charges in New York City

    Public safety outcomes of the Bronx Osborne Gun Accountability and Prevention program (BOGAP)

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  • June 1, 2026 JohnJayREC

    Recidivism: Use with Caution

    Measuring the outcomes of criminal justice interventions should include recidivism, but exclusive reliance on recidivism is ill-advised and potentially reckless.

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  • February 13, 2026 JohnJayREC

    Community-Led Strategies to Reduce Gun Violence

    Building the CVI evidence base for the future will require theoretically informed, intentionally causal evaluation studies.

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  • June 3, 2022 JohnJayREC

    Community Violence Intervention at the Roots (CVI–R)

    Grassroots efforts to reduce violence could be called Community Violence Interventions at the Roots (or CVI-R).

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  • November 9, 2020 JohnJayREC

    Reducing Violence Without Police: A Review of Research Evidence

    JohnJayREC reviewed the evidence for policies and programs that reduce violence without relying on police.

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  • January 1, 2020 JohnJayREC

    Easily Overstated

    The notion that youth confinement fell in response to progressive reforms is merely appealing rhetoric.

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Research Products

September 14, 2024 JohnJayREC

Reimagining Community Safety

The National League of Cities supported local government leaders in five U.S. cities working to reimagine public safety.

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August 1, 2024 JohnJayREC

Ticket Punch: The Consequences of Fare Evasion Enforcement in New York City Subways

Researchers investigated transit fare evasion in New York City subway stations between 2018 and 2023.

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March 18, 2024 JohnJayREC

Color Contrast: Racial and Ethnic Disparities in New York City Law Enforcement

Racial differences in police contacts are not de facto evidence of bias, but monitoring could help guard equity.

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April 28, 2021 JohnJayREC

The Juvenile Justice Response to Violence

Even during periods of relatively low violence, the incidence of violent behavior by and among young people is a prominent issue. Policymakers and communities always need effective methods of addressing violent acts by youth.

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July 17, 2020 JohnJayREC

Reducing Gun Violence in New York City

Causal relationships are difficult to identify in complex and multi-part initiatives, but New York City’s falling rate of gun violence suggests that recent community initiatives may have helped to sustain previous gains.

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November 11, 2019 JohnJayREC

Older Adults Responsible for Total Growth in Drug Arrests

The entire increase in drug crime arrests during the past decade was due to growing numbers of arrests involving adults ages 25 and older. Youth under age 18 and even young adults under age 25 were far less likely to be arrested for drug crimes in 2018 than any time in the past two decades.

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July 27, 2018 JohnJayREC

Good Questions: Building Evaluation Evidence in a Competitive Policy Environment

Policymakers and practitioners in the justice sector should consider evaluation research as a portfolio of strategic investments in knowledge development. Randomized controlled trials are merely one asset in a broader investment strategy.

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May 24, 2018 JohnJayREC

Gun Violence is not an “Urban” Problem

by Jeffrey A. Butts JohnJayREC DataBits 2018-01 (revised Jan 2020) Policy debates

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May 15, 2018 JohnJayREC

Critical Care: The Important Role of Hospital-Based Violence Intervention Programs

Douglas Evans and Anthony Vega In Denormalizing Violence: A Series of Reports

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October 2, 2017 JohnJayREC

Repairing Trust

Young men who express more confidence in law enforcement are less likely to support the use of personal violence to settle disputes and resolve personal conflicts.

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New York City neighborhood
October 2, 2017 JohnJayREC

The Effects of Cure Violence in the South Bronx and East New York, Brooklyn

Promising evidence that the public health approach to violence reduction championed by Cure Violence may be capable of creating safe and healthy communities.

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August 4, 2015 JohnJayREC

Respondent-Driven Sampling: Evaluating the Effects of the Cure Violence Model with Neighborhood Surveys

by Kwan-Lamar Blount-Hill and Jeffrey A. Butts August 2015 Acknowledgements This report

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November 21, 2013 JohnJayREC

WNYC – Brian Lehrer Show

Is the News Media Over-Hyping “The Knockout Game?” November 21, 2013. … “The Knockout Game” is a phenomenon where teens assault strangers

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October 9, 2013 JohnJayREC

Fall 2013 Pinkerton Symposium

RAISE THE AGE, TURN THE PAGE: Reconsidering Juvenile and Criminal Court Jurisdiction in New York A Youth Justice Symposium Generously

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October 3, 2013 JohnJayREC

Violent Youth Crime in U.S. Falls to New 32-Year Low

In 2008, there were approximately 300 violent youth crime arrests for every 100,000 juveniles in the population. Between 2009 and 2012, the rate of violence plummeted nearly 40 percent to fewer than 190 arrests per 100,000 juveniles.

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August 12, 2013 JohnJayREC

Ready for Success

Tomberg, Kathleen A. (2013). Ready for Success: A Profile of YouthBuild Mentoring Participants. New York, NY: Research and Evaluation Center, John Jay College

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August 1, 2013 JohnJayREC

Assessment of New York City Gun Violence Reduction Strategy: Year 1 Report

Delgado, Sheyla, Laura Negredo, Popy Begum, Michelle Cubellis, Alana Henninger, Douglas Evans, Kathy Tomberg, and Jeffrey Butts (2013). NYC Assessment 2013.

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June 15, 2013 JohnJayREC

Current Practice in the Juvenile Justice System

Butts, Jeffrey [committee member] with Simon Singer (2013).  Current Practice in the Juvenile Justice System (Chapter 3, pp. 49-88). In Reforming

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