Ratcliffe's random ramblings

The particular paper under discussion is: Groff, ER, Ratcliffe, JH, Haberman, CP, Sorg, ET, Joyce, N and Taylor, RB (2015) Does what police do at hot spots matter? The Philadelphia Policing Tactics Experiment, Criminology, 53(1): 23-53. It is open access here: https://onlinelibrary.wiley.com/doi/full/10.1111/1745-9125.12055 There are some more results and details at this site: https://www.jerryratcliffe.net/philadelphia-predictive-polic

The cited study is Nazzari, M., Calaresu, M. & Triventi, M. No sales after midnight: evaluating the impact of a business curfew on drug-related crime in San Francisco’s tenderloin. Security Journal, 39, 5 (2026). https://doi.org/10.1057/s41284-025-00517-w

The cited study is Heflin, J., McCannon, B.C. (2026) The Impact of California’s Zero Dollar Bail Policy On Crime. Am J Crim Just (2026). You can access it here: https://doi.org/10.1007/s12103-025-09880-1

There has been a great deal written about Boston's Operation Ceasefire, but the original evaluation is at BRAGA, A. A., KENNEDY, D. M., WARING, E. J., & PIEHL, A. M. (2001). Problem-Oriented Policing, Deterrence, and Youth Violence: An Evaluation of Boston’s Operation Ceasefire. Journal of Research in Crime and Delinquency , 38 (3), 195-225. It is online here .

The cited paper is Hubbard-Chason, T., Ariel, B., Assaraf, N., & Harinam, V. (2025). Reducing Crime on London Buses: A Randomised Controlled Trial on Moving Hotspots. Police Quarterly . It is open access and available here: https://journals.sagepub.com/doi/10.1177/10986111251392931