Randomized Controlled Trials
Randomized controlled trials are the gold standard in research, producing causal evidence about the efficacy and impact of policies and programs.
A randomized controlled trial, or RCT, is considered the gold standard in research. A RCT is a rigorous study that randomly assigns participants to either a “treatment group” who are offered the intervention, or a “control group” who have access to all other services except for the intervention. By measuring what would have happened to the treatment group without the intervention, an RCT lets researchers isolate the effect of the intervention itself.
The Crime Lab uses RCTs as our preferred method of project evaluation wherever possible. While RCTs can be time and resource intensive, they generate high-quality results to ensure that our partners and policymakers can make informed decisions about how to best support communities affected by gun violence.
Latest Updates
Chattanooga Police Chief John Chambers Completes University Of Chicago Crime Lab’s Policing Leadership Academy
Chattanooga Police Department Chief John Chambers graduated from the University of Chicago Crime Lab’s Policing Leadership Academy, an education program dedicated to reducing violent crime and improving police effectiveness.

Vice President Kamala Harris Recognizes the CVILA at White House Ceremony

Chicago Police Make an Arrest in Only 20 Percent of Fatal Shootings
The Trace’s Rita Oceguera and Justin Agrelo highlight only 20% of fatal shootings in Chicago result in an arrest. Philip Cook, a professor emeritus of public policy and economics at Duke University, has been working with the University of Chicago’s Crime Lab to examine clearance rates and has noted a sharp decline in homicide clearance rates over the years.
