Quasi-Experimental Comparison Design for Evaluating the Mayor’s Action Plan for Neighborhood Safety

To evaluate the New York City Mayor’s Action Plan for Neighborhood Safety (MAP), an initiative to improve the safety of public housing developments, researchers estimated the counterfactual (no intervention) by selecting a set of comparison housing developments not involved in the initiative. The study relied on the statistical method known as propensity score analysis (PSA) to select the comparison group. Continue reading Quasi-Experimental Comparison Design for Evaluating the Mayor’s Action Plan for Neighborhood Safety

Columbus Dispatch—Why Don’t Local, State and Federal Crime Numbers Add Up?

Jeffrey Butts, director of the Research and Evaluation Center at John Jay College of Criminal Justice in New York, said that in some ways, law enforcement never has been best equipped for crunching the numbers. Go to a police department and ask to be taken to the unit that does the crime reporting. Sometimes, it’s civilians with advanced degrees and computers, he said. “Other places, you walk in and it’s full of uniforms,” he said, pointing out that some departments view crime reporting as a desk job for officers who no longer want to work patrol. At a department such as the New York City Police Department, there are civilian research analysts with doctorates. Continue reading Columbus Dispatch—Why Don’t Local, State and Federal Crime Numbers Add Up?

Discussing Evidence-Based Policy and Practice

The Juvenile Justice Information Exchange (JJIE.org) hosted a Google Hangout (online live chat) between the director of the R&E Center, Jeffrey Butts, and Cynthia Lum from the Center for Evidence-Based Crime Policy at George Mason University. The conversation covered a number of topics, including the nature of evidence-based practices, how programs or practices become evidence-based, and the forces that can make the connections between evidence and practice problematic. Continue reading Discussing Evidence-Based Policy and Practice