Arnold Ventures asked the Research and Evaluation Center at John Jay College of Criminal Justice to review and summarize the research evidence for policies and programs that reduce community violence without relying on police.
Surveys of New York City public housing residents suggest that changes in some public safety outcomes might be mediated by gains in community well-being, social cohesion, engagement with government, and citizen trust in the competence of government agencies and actors. As communities become more tightly connected and more supported, they may experience gains in public safety.
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.
A rigorous test of the Mayor’s Action Plan for Neighborhood Safety indicates that New York City’s effort to improve the safety of public housing communities was beginning to show benefits by the end of 2019 and could be considered a promising intervention.
Policymakers, advocates, and even some researchers claim that youth confinement rates across the United States dropped in recent years due to changes in policy and practice. Such claims remain unproven, but voters and elected officials are inclined to accept them as factual because they are offered by reputable agencies and repeated in news media sources. Without reliable evidence, however, the notion that state-level youth confinement rates fall primarily in response to progressive policy reforms is merely appealing rhetoric.
As part of an evaluation of the New York City Mayor’s Action Plan for Neighborhood Safety (MAP), researchers from John Jay College of Criminal Justice collaborated with survey specialists from NORC at the University Chicago to collect data from two probability samples of residents in public housing developments in New York City. One sample of residents came from communities involved in the MAP initiative. A second sample was from statistically matched housing developments not involved in MAP.
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.
Based on the latest statistics compiled by the Federal Bureau of Investigation (FBI), the national violent crime arrest rate declined 38 percent overall between 1988 and 2018, but the steepest declines were observed among youth ages 10 to 14 (–53%) and 15 to 17 (–54%). The arrest rate for 18-20 year-olds dropped 47 percent while the arrest rates for adults ages 21-24 and 25-49 declined 42 percent and 23 percent, respectively.
