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Institute of Criminology



Barak Ariel holds a PhD in Criminology from the Hebrew University of Jerusalem, Israel (supervised by Professor David Weisburd), BA in Psychology from the University of New York, MA in Criminology (Hebrew University), LLB (Academic Centre of Law & Business) and LLM (Hebrew University).

Dr Ariel joined the Institute of Criminology as a postdoctoral fellow (mentored by Professor Lawrence Sherman) in 2008, and has been affiliated with the Jerry Lee Centre of Experimental Criminology and teaching on the MSt in Applied Criminology and Police Management since 2009 (as a Lecturer in Evidence-Based Policing and later as a Lecturer in Experimental Criminology). Dr Ariel has been appointed as a Reader in Experimental Criminology in 2020.

Dr Ariel is involved in evaluation research projects with a large number of criminal justice agencies around the world, specifically on organised crime, crime and place, and technology in policing. He is an advisor to several governments and police departments, including a UK Cross-Whitehall Trial Advice Panel, Several forces in England and Wales, United States, Latin America and Europe. He is the recipient of the Academy of Experimental Criminology Young Experimental Scholar Award, European Society of Criminology Young Criminologist Award and a Fellow of the Division of Experimental Criminology.

Dr Ariel is presently the Chair of the Division of Experimental Criminology (2019-2021).


Barak’s interests lie mainly in policing, especially proactive policing, crime prevention, violence, crime and place, body worn cameras and technology and policing. With an extensive background in impact evaluations, his methodological approach is both quantitative and qualitative, with a focus on experimental designs. 


Key publications: 
  • Ariel, B., Levy-Ariel, Y., and Amram, S. (accepted). Did the number of domestic violence incidents in Tel Aviv increase during the Covid-19 lockdown? Insights from police records. Israeli Sociology: A Journal for the Study of Society in Israel. 
  • Martain, B. R., Harinam, V. & Ariel, B. (accepted).  Linking Body Worn Camera Activation With Complaints And Litigation: The Promise Of Metadata.  Australian and New Zealand Journal of Criminology.
  • Sabo-Brants, H. & Ariel, B. (accepted). Evidence map of school-based violence prevention programs in Israel. International Criminal Justice Review.
  • Sherman, L. W., Neyroud, P., Strang, H., Ariel, B., Bland, Matthew, Tankebe, J., Wright, M., and Neyroud, E. (2020). How to Count Crime: the Cambridge Harm Index Consensus. Cambridge Journal of Evidence-Based Policing, 4, 1-14.
  • Langley, B., Ariel, B., Tankebe, J., Sutherland, A., Beale, M., Factor, R., & Weinborn, C. (2020). A simple checklist, that is all it takes: a cluster randomized controlled field trial on improving the treatment of suspected terrorists by the police. Journal of Experimental Criminology.
  • Ariel, B., Sherman, L. W., & Newton, M. (2020). Testing hot‐spots police patrols against no‐treatment controls: Temporal and spatial deterrence effects in the London Underground experiment. Criminology58(1), 101-128.
  • Ariel, B., Mitchell, R. J., Tankebe, J., Firpo, M. E., Fraiman, R., & Hyatt, J. M. (2020). Using wearable technology to increase police legitimacy in Uruguay: the case of body-worn cameras. Law & Social Inquiry45(1), 52-80.
  • Demir, M., Apel, R., Braga, A. A., Brunson, R. K. & Ariel, B. (2020). Body worn cameras, procedural justice, and police legitimacy: a controlled experimental evaluation of traffic stops. Justice quarterly37(1), 53-84.
  • Ariel, B., Sutherland, A., & Bland, M. (2019). The trick does not work if you have already seen the gorilla: how anticipatory effects contaminate pre-treatment measures in field experiments. Journal of Experimental Criminology, 1-12.
  • Ariel, B., Farrar, W. A., & Sutherland, A. (2019). Correction to: The Effect of Police Body-Worn Cameras on Use of Force and Citizens’ Complaints Against the Police: A Randomized Controlled Trial. Journal of Quantitative Criminology, 1-2.
  • Mills, L. G., Barocas, B., Butters, R. P. & Ariel, B. (2019). A randomized controlled trial of restorative justice-informed treatment for domestic violence crimes. Nature human behaviour, 1-11.
  • Ariel, B., Englefield, A. and Denley, J. (2019). 'I heard it through the grapevine': A randomized controlled trial on the vicarious effect of focused deterrence initiatives in criminal networks. The Journal of Criminal Law and Criminology, 109(4), 819-867.
  • Frydensberg, C., Ariel, B., and Bland, Matthew (2019).  Targeting the most harmful co-offenders in Denmark: a social network analysis approach. Cambridge Journal of Evidence-Based Policing, 1-16.
  • Denley, J. and Ariel, B. (2019). Whom should we target to prevent? Analysis of organized crime in England using intelligence records.  European Journal of Crime, Criminal Law and Criminal Justice, 27(1): 13-44.
  • Rozmann, N. and Ariel, B. (2018).  The Extent and Gender Directionality of Intimate Partner Violence in Different Relationship Types: A Systematic Review and Meta-Analysis. Partner Abuse, 9(4): 335-361.
  • Ariel, B., Newton, M., McEwan, L., Ashbridge, GA, and Sabo-Brants, H. (2019). Reducing assaults against staff using body-worn cameras: Evidence from the United Kingdom train operating companies’ randomized controlled trial. Criminal Justice Review, 44(1): 76-93.
  • Ariel, B., Sutherland, A., & Sherman, L. W. (2018). Preventing treatment spillover contamination in criminological field experiments: the case of body-worn police cameras. Journal of Experimental Criminology, 1-23.
  • Antrobus, E., Thompson, I., and Ariel, B. (2019). Procedural justice training for police recruits: Results of a randomized controlled trial. Journal of Experimental Criminology, 15(1): 29-53.
  • Ariel, B., Lawes, D., Weinborn, C. Henry, R., Chen, C. and Brants-Sabo, H. (2019). The “less-than-lethal weapons effect”—Introducing TASER guns to routine police operations in England and Wales: A randomized controlled trial. Criminal Justice and Behavior, 46(2): 280-300.
  • Macbeth, E., and Ariel, B. (2019). Place-Based Statistical Versus Clinical Predictions of Hotspots Locations in Northern Ireland. Justice Quarterly, 36(1):93-126.
  • Mitchell, RJ, Ariel, B., Tankebe, J., Firpo ME, Fraiman, R., Delcastillo, F., and Hyatt JM (2018). Measuring the effect of body-worn cameras on complaints in Latin America: the case of traffic police in Uruguay. Policing: an International Journal of Police Strategies & Management, 41(4): 510-524.
  • Norton, S., Ariel, B., Weinborn, C., & O’Dwyer, E. (2018). Spatiotemporal patterns and distributions of harm within street segments: The story of the “harmspot”. Policing: An International Journal, 41(3): 352-371.
  • Ariel, B., Sutherland, A., Henstock, D., Young, J., Drover, P., Sykes, J., Megicks, S., and Henderson, R. (2018).  Paradoxical Effects Of Self-Awareness Of Being Observed: Testing The Effect Of Police Body-Worn Cameras On Assaults Against Officers Journal of Experimental Criminology, 14(1): 19-47.
  • Rozmann, N., and Ariel, B. (2018). Quantifying Domestic Violence Prevalence: A Systematic Review. Megamot, 52(2): 44-7 [in Hebrew].

Teaching and Supervisions


- Policing

- Research methods

Professor of Experimental Criminology
Dr Barak  Ariel