Jan 2021

Reducing Crime Through Environmental Design: Evidence from a Randomized Experiment of Street Lighting in New York City

Lucie Parker Aaron Chalfin

This paper offers novel experimental evidence that violent crimes can be successfully reduced by changing the situational environment that potential victims and offenders face. We focus on a ubiquitous but understudied feature of the urban landscape—street lighting—and report the first experimental evidence on the effect of street lighting on crime.

Related Resources
Webinar: Overview of the City of Chicago’s Violence Reduction Dashboard
Webinar

Webinar: Overview of the City of Chicago’s Violence Reduction Dashboard

Jun 2025

The Crime Lab hosted a webinar that explored the City of Chicago’s Violence Reduction Dashboard—a publicly available tool launched to support efforts to reduce gun violence through transparent, real-time data.

Unforgiving Places: The Unexpected Origins of American Gun Violence
Other

Unforgiving Places: The Unexpected Origins of American Gun Violence

Apr 2025

Crime Lab Pritzker Director Jens Ludwig authored a book that argues the lack of progress in reducing gun violence ultimately stems from our having misunderstood the nature of the problem, and that behavioral science gives us a new way to understand – and solve – gun violence in America.

Local Gun Violence Dashboards
Data Tool

Local Gun Violence Dashboards

Jan 2025

Chicago’s Violence Reduction Dashboard, launched by the Crime Lab in 2021, is featured in a toolkit created by Everytown for Gun Safety Support Fund as a part of its Gun Violence Data Fellowship.

Valuing the benefits of reducing firearm violence in the United States
Academic Paper

Valuing the benefits of reducing firearm violence in the United States

Jan 2025

This paper estimates the monetized value of the impact of reducing firearm violence and how that value is distributed across the population.

Latest Updates

Comedy and crime fighting join forces for police learning leadership skills
Media Mention
Associated Press
Jun 2025

Comedy and crime fighting join forces for police learning leadership skills

Claudia Lauer for The Associated Press highlights the Policing Leadership Academy’s partnership with The Second City that uses improv exercises to help police leaders build deeper communication skills and meet their goals of increasing community engagement and creating safer cities.

How Treating Teens’ Trauma Is Stopping Violence in Chicago
Podcast
Tradeoffs
Jun 2025

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
Web Post
Brooks Bawden Moore Blog
Jun 2025

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.