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Police stops unintentionally increase criminal behavior in black and Latino youths

April 09, 2019

New York, NY - New research by NYU Steinhardt doctoral candidate Juan Del Toro finds that Black and Latino adolescent boys who are stopped by police report more frequent engagement in delinquent behavior thereafter. The study also demonstrates that police stops have a negative impact on the adolescents' psychological well-being.

"Our findings indicate that the single most common proactive policing strategy - directing officers to make contact with individual boys and young men in 'high crime' areas - may impose a terrible cost on Black and Latino youth across the country," said Juan Del Toro, doctoral candidate in NYU Steinhardt's Department of Applied Psychology. "Police stops are associated with harmful outcomes including subsequent delinquent behavior and psychological distress that may be even more harmful when they occur earlier in boys' lives. These consequences warrant urgent attention from social scientists and policymakers."

This research was published in Proceedings of the National Academy of Sciences of the United States of America (PNAS). The full research article can be viewed at

The Problem with Proactive Policing

Police agencies across the country have sought out to reduce crimes by shifting to what is known as "proactive policing" - proactively deploying officers to places where crime is likely to be reported and to engage with people most likely to be accused of those crimes.

A recent review of research demonstrates that proactive policing is associated with reduced crime, however, the same research also acknowledges that proactive policing can negatively affect the public legitimacy of law enforcement and even push people to avoid law-related officials altogether. The research also ignores the potentially negative effects of proactive policing on racial disparities or youth criminality. The new research by Del Toro addresses the research gap by studying and finding that police stops increase the likelihood that Black and Latino adolescents' will engage in subsequent delinquent behavior.

Why Boys of Color

Boys, and nonwhite boys in particular, were the focus of Del Toro's research because they are far more likely to experience police stops, arrests, or other contact with law enforcement compared to their peers. Del Toro points to New York City notes that in 2016, more than 90 percent of people subjected to police stops were male - out of those 52 percent Black, 29 percent Latino, 10 percent White. Forty-seven percent were juveniles aged 14-24. Of the juveniles who experienced police encounters, only 7.2 percent were female and 7.5 percent were White.

Del Toro and his team recruited boys from six public high schools in high-intensity policing neighborhoods and studied their encounters with law enforcement over two years. The boys in the sample self-identified as Latino (57.5 percent of the sample), Black (23.1 percent of the sample), and other non-White (19.4 percent of the sample). All boys were equally susceptible to police stops and encounters, regardless of their prior engagement with delinquency.

Additional Findings

The research also found that the more often a boy was stopped by the police, the more frequent his engagement with criminal behavior was six, 12, and 18 months later. Past criminal behavior did not predict more police encounters.

Additionally, the relationship between police stops and subsequent delinquency was partially mediated by psychological distress. The younger a boy was the first time he was stopped, the greater the increase in subsequent delinquent behavior six months later.
In addition to Del Toro, the study's co-authors include Tracey Lloyd of the Urban Institute; Kim S. Buchanan, Summer Joi Robins, Meredith Gamson Smiedt, Erin M. Kerrison and Phillip Atiba Goff of the Center for Policing Equity; Kavita S. Reddy of Second Measure; Enrique Rodriguez Pouget of the City University of New York; and Lucy Zhang Bencharit of Stanford University.

About the Steinhardt School of Culture, Education, and Human Development

Located in the heart of New York City's Greenwich Village, NYU's Steinhardt School of Culture, Education and Human Development prepares students for careers in the arts, education, health, media and psychology. Since its founding in 1890, the Steinhardt School's mission has been to expand human capacity through public service, global collaboration, research, scholarship, and practice. To learn more about NYU Steinhardt, visit

New York University

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