Ratcliffe's random ramblings

The study in question is Jackson, J., Kuha, J., Bradford, B., & Hough, M. (2025). Why do people cooperate with the police and criminal courts? A test of procedural justice theory in 30 countries. Criminology, 1–29. It is open access here: https://onlinelibrary.wiley.com/doi/epdf/10.1111/1745-9125.70022

The systematic review is Huff, J., Dunlap, B. & Pearson, R.L. (2026) Does Acoustic Gunshot Detection Technology Reduce Crime? A Systematic Review and Meta-Analysis. Am J Crim Just (2026). https://doi.org/10.1007/s12103-025-09883-y

Susan J. Hoppe, Yan Zhang, Brittany E. Hayes, Matthew A. Bills (2020) Mandatory arrest for domestic violence and repeat offending: A meta-analysis , Aggression and Violent Behavior, 53, 101430.

Probably the best summary is McCord, J., & McCord, W. (1959). A Follow-up Report on the Cambridge-Somerville Youth Study. Annals of the American Academy of Political and Social Science, 322(1), 89-96.

The two cites studies are by Tom Hogan: Hogan, T. P. (2022). De-prosecution and death: A synthetic control analysis of the impact of de-prosecution on homicides. Criminology and Public Policy, 21(3), 489-534. And another larger analysis: Petersen, N., Mitchell, O., & Yan, S. (2024). Do progressive prosecutors increase crime? A quasi-experimental analysis of crime rates in the 100 largest counties, 2000–2020. Criminology & Public Policy, 23, 459–490.

Cited article is Henderson, H., Bourgeois, J. W., Smith, S., Ferguson, C. J., & Barthelemy, J. (2024). Police shootings, violent crime, race and socio-economic factors in municipalities in the United States of America. Criminal Behaviour and Mental Health , 34(3), 296-310. Abstract is available here . Full paper copy: .

Cited study is Rossmo, D. K., Bouchard, M., & Summers, L. (2025). Criminal Investigative Failures: A Network Analysis. Justice Quarterly, 1–30. https://doi.org/10.1080/07418825.2025.2594189 Read it here:

The cited work is: McLean, K., Bussey, T., Nix, J., Rojek, J., & Alpert, G. P. (2026). Police de-escalation training and its effects on communication: Evidence from an experimental evaluation. https://www.sciencedirect.com/science/article/pii/S004723522600005X You can read the CrimRxiv Consortium pre-print of the work publicly available here .

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