Jan 2025
Transforming Criminal Justice Responses to Substance Use: Impacts on Crime, Housing, and Health Outcomes
This paper evaluates the impact of diverting individuals who possess drugs away from arrest and into substance use treatment in Chicago between 2010-2022.
Drug overdose deaths in the U.S. reached a record high of 107,941 in 2022, three quarters of which involved opioids. In response to the scale of the epidemic, hundreds of police departments across the country have begun to divert individuals who possess drugs away from arrest and into substance use treatment. This paper evaluates the impact of this approach using arrest-level variation in diversion eligibility in Chicago between 2010-22 in a triple difference framework. We find that drug arrest diversion primarily reached individuals who used narcotics every day, increased connections with substance use treatment, and reduced subsequent arrests, including arrests for violent offenses, but had no discernible impact on fatal or non-fatal overdose risk.

Agent-Based Model of Combined Community- and Jail-Based Take-Home Naloxone Distribution
This paper outlines the impact and cost-effectiveness of naloxone distribution, particularly for people facing criminal justice involvement.

Empirical Analysis of Prediction Mistakes in New York City Pretrial Data

Brookings Institution Commentary: Making the invisible epidemic visible
Using new data from a large urban trauma center in Chicago, we document substantial under-reporting of domestic violence at the time of receiving medical care.

Video about the Narcotics Arrest Diversion Program
This video provides an overview of the Crime Lab’s evaluation of the Narcotics Arrest Diversion Program, a program implemented by the community behavioral health provider Thresholds.
Latest Updates
How Treating Teens’ Trauma Is Stopping Violence in Chicago
The Tradeoffs Podcast highlights the Crime Lab’s study of Choose to Change, a program that pairs cognitive behavioral therapy with wraparound supports to engage young people who are increasingly disconnected from school and often exposed to high levels of trauma – with the goal of keeping them safe and helping them thrive.

Major Public Safety Associations Participate in Congressional Briefing on Law Enforcement Training Priorities During National Police Week
Alumni of the Crime Lab’s Policing Leadership Academy (PLA) participated in a bipartisan briefing as part of National Police Week, focusing on key law enforcement training priorities.

Book Review: What We Get Wrong About Violent Crime
Malcolm Gladwell pens a review of “Unforgiving Places,” a new book by Crime Lab Pritzker Director Jens Ludwig, that reflects on how the book “challenges our assumptions about why most shootings happen—and what really makes a city safe.”
