Research on body‐worn cameras
What we know, what we need to know
Abstract
Research Summary
In this article, we provide the most comprehensive narrative review to date of the research evidence base for body‐worn cameras (BWCs). Seventy empirical studies of BWCs were examined covering the impact of cameras on officer behavior, officer perceptions, citizen behavior, citizen perceptions, police investigations, and police organizations. Although officers and citizens are generally supportive of BWC use, BWCs have not had statistically significant or consistent effects on most measures of officer and citizen behavior or citizens’ views of police. Expectations and concerns surrounding BWCs among police leaders and citizens have not yet been realized by and large in the ways anticipated by each. Additionally, despite the large growth in BWC research, there continues to be a lacuna of knowledge on the impact that BWCs have on police organizations and police–citizen relationships more generally.
Policy Implications
Regardless of the evidence‐base, BWCs have already rapidly diffused into law enforcement, and many agencies will continue to adopt them. Policy implications from available evidence are not clear‐cut, but most likely BWCs will not be an easy panacea for improving police performance, accountability, and relationships with citizens. To maximize the positive impacts of BWCs, police and researchers will need to give more attention to the ways and contexts (organizational and community) in which BWCs are most beneficial or harmful. They will also need to address how BWCs can be used in police training, management, and internal investigations to achieve more fundamental organizational changes with the long‐term potential to improve police performance, accountability, and legitimacy in the community.
Citing Literature
Number of times cited according to CrossRef: 61
- Kenneth R. Murray, M. R. Haberfeld, Kenneth R. Murray, M. R. Haberfeld, Introduction, Use of Force Training in Law Enforcement, 10.1007/978-3-030-59880-8_1, (1-5), (2021).
- Scott W. Phillips, Dae-Young Kim, Joseph Gramaglia, The impact of general police officer outlooks on their attitudes toward body-worn cameras, Policing: An International Journal, 10.1108/PIJPSM-10-2019-0163, ahead-of-print, ahead-of-print, (2020).
- Jordan C. Pickering, Officers' perceptions regarding the unexpected effects of body-worn cameras, Policing: An International Journal, 10.1108/PIJPSM-09-2019-0153, ahead-of-print, ahead-of-print, (2020).
- Robin S. Engel, Hannah D. McManus, Gabrielle T. Isaza, Moving beyond “Best Practice”: Experiences in Police Reform and a Call for Evidence to Reduce Officer-Involved Shootings, The ANNALS of the American Academy of Political and Social Science, 10.1177/0002716219889328, 687, 1, (146-165), (2020).
- Rémi Boivin, Maurizio D’Elia, Évaluation du projet pilote des caméras corporelles du Service de police de la Ville de MontréalA quantitative assessment of the effects of body-worn camerasEvaluación del proyecto-piloto de las cámaras corporales del Servicio de policía de la ciudad de Montreal, Criminologie, 10.7202/1070513ar, 53, 1, (344), (2020).
- Bill McCarthy, John Hagan, Daniel Herda, Neighborhood climates of legal cynicism and complaints about abuse of police power, Criminology, 10.1111/1745-9125.12246, 58, 3, (510-536), (2020).
- Shannon Dodd, Emma Antrobus, Michelle Sydes, Cameras in Corrections: Exploring the Views of Correctional Officers on the Introduction of Body-Worn Cameras in Prisons, Criminal Justice and Behavior, 10.1177/0093854820942288, 47, 9, (1190-1208), (2020).
- Thomas J. Mrozla, Julia Marin Hellwege, Gender composition and agency decision-making: female officers' effect on body-worn camera acquisition, Policing: An International Journal, 10.1108/PIJPSM-02-2020-0024, ahead-of-print, ahead-of-print, (2020).
- Thomas W. Hughes, Bradley A. Campbell, Brian P. Schaefer, The influence of body‐worn cameras, minority threat, and place on police activity, Journal of Community Psychology, 10.1002/jcop.22299, 48, 1, (68-85), (2020).
- Carrie B. Sanders, Jennifer Lavoie, Boundary objects and technological frames: officer’s’ perceptions and experiences using mental health screeners on the frontline, Policing and Society, 10.1080/10439463.2020.1813140, (1), (2020).
- Cynthia Lum, Christopher S. Koper, David B. Wilson, Megan Stoltz, Michael Goodier, Elizabeth Eggins, Angela Higginson, Lorraine Mazerolle, Body‐worn cameras’ effects on police officers and citizen behavior: A systematic review, Campbell Systematic Reviews, 10.1002/cl2.1112, 16, 3, (2020).
- Alana Saulnier, Ryan Lahay, William P. McCarty, Carrie Sanders, The RIDE study: Effects of body‐worn cameras on public perceptions of police interactions, Criminology & Public Policy, 10.1111/1745-9133.12511, 19, 3, (833-854), (2020).
- Daniel S. Nagin, Cody W. Telep, Procedural justice and legal compliance, Criminology & Public Policy, 10.1111/1745-9133.12499, 19, 3, (761-786), (2020).
- Mustafa Demir, Anthony A. Braga, Robert Apel, Effects of police body‐worn cameras on citizen compliance and cooperation: Findings from a quasi‐randomized controlled trial, Criminology & Public Policy, 10.1111/1745-9133.12505, 19, 3, (855-882), (2020).
- Erik Alda, The Effects of Body-Worn Cameras on Police Efficiency: A Study of Local Police Agencies in the US, SSRN Electronic Journal, 10.2139/ssrn.3722508, (2020).
- Alana Saulnier, Kelly C. Burke, Bette L. Bottoms, The effects of body‐worn camera footage and eyewitness race on jurors' perceptions of police use of force, Behavioral Sciences & the Law, 10.1002/bsl.2443, 37, 6, (732-750), (2020).
- Mustafa Demir, Ahmet Kule, The effect of body-worn cameras on satisfaction and general perceptions of police: Findings from a quasi-randomized controlled trial, European Journal of Criminology, 10.1177/1477370820905105, (147737082090510), (2020).
- Anna Gurinskaya, Predicting citizens’ support for surveillance cameras. Does police legitimacy matter?, International Journal of Comparative and Applied Criminal Justice, 10.1080/01924036.2020.1744027, (1-21), (2020).
- David A. Makin, Dale W. Willits, Rachael Brooks, Systematic social event modeling: a methodology for analyzing body-worn camera footage, International Journal of Social Research Methodology, 10.1080/13645579.2020.1766775, (1-14), (2020).
- Alese Wooditch, Craig D. Uchida, Shellie E. Solomon, Lauren Revier, Christine Connor, Mariel Shutinya, John McCluskey, Marc L. Swatt, Perceptions of Body-Worn Cameras: Findings from a Panel Survey of Two LAPD Divisions, American Journal of Criminal Justice, 10.1007/s12103-020-09517-5, (2020).
- Rylan Simpson, When Police Smile: A Two Sample Test of the Effects of Facial Expressions on Perceptions of Police, Journal of Police and Criminal Psychology, 10.1007/s11896-020-09386-y, (2020).
- Janne E. Gaub, Natalie Todak, Michael D. White, The distribution of police use of force across patrol and specialty units: a case study in BWC impact, Journal of Experimental Criminology, 10.1007/s11292-020-09429-8, (2020).
- Keith J Hayward, Matthijs M Maas, Artificial intelligence and crime: A primer for criminologists, Crime, Media, Culture: An International Journal, 10.1177/1741659020917434, (174165902091743), (2020).
- R. Longridge, B. Chapman, C. Bennell, D. D. Clarke, D Keatley, Behaviour Sequence Analysis of Police Body-Worn Camera Footage, Journal of Police and Criminal Psychology, 10.1007/s11896-020-09393-z, (2020).
- Justin Nix, Natalie Todak, Brandon Tregle, Understanding Body-Worn Camera Diffusion in U.S. Policing, Police Quarterly, 10.1177/1098611120917937, (109861112091793), (2020).
- Jessica Huff, Charles M. Katz, Vincent J. Webb, E. C. Hedberg, Attitudinal Changes Toward Body-Worn Cameras: Perceptions of Cameras, Organizational Justice, and Procedural Justice Among Volunteer and Mandated Officers, Police Quarterly, 10.1177/1098611120928306, (109861112092830), (2020).
- Dae-Young Kim, Scott W. Phillips, Joseph A. Gramaglia, The relationship between general policing attitudes and how officers perceive the potential advantages of body cameras, Journal of Crime and Justice, 10.1080/0735648X.2020.1796758, (1-22), (2020).
- Janne E. Gaub, Michael D. White, Open to Interpretation: Confronting the Challenges of Understanding the Current State of Body-Worn Camera Research, American Journal of Criminal Justice, 10.1007/s12103-020-09518-4, (2020).
- Stephen Douglas, The Effects of Body-Worn Cameras on Violent Police Victimization, Policing: A Journal of Policy and Practice, 10.1093/police/paaa032, (2020).
- Brandon Tregle, Justin Nix, Justin T. Pickett, Body-Worn Cameras and Transparency: Experimental Evidence of Inconsistency in Police Executive Decision-Making, Justice Quarterly, 10.1080/07418825.2020.1821086, (1-23), (2020).
- Sunyoung Pyo, Understanding the Adoption and Implementation of Body-Worn Cameras among U.S. Local Police Departments, Urban Affairs Review, 10.1177/1078087420959722, (107808742095972), (2020).
- Bridget A. Harris, Visualising violence? Capturing and critiquing body-worn video camera evidence of domestic and family violence, Current Issues in Criminal Justice, 10.1080/10345329.2020.1831730, (1-21), (2020).
- Julian R. Murphy, David Estcourt, Surveillance and the state: body-worn cameras, privacy and democratic policing, Current Issues in Criminal Justice, 10.1080/10345329.2020.1813383, (1-11), (2020).
- Bryce E. Peterson, Daniel S. Lawrence, Do the Effects of Police Body-Worn Cameras on Use of Force and Complaints Change Over Time? Results From a Panel Analysis in the Milwaukee Police Department, Criminal Justice and Behavior, 10.1177/0093854820970583, (009385482097058), (2020).
- Janne E Gaub, Carolyn Naoroz, Aili Malm, Police BWCs as ‘Neutral Observers’: Perceptions of public defenders, Policing: A Journal of Policy and Practice, 10.1093/police/paaa067, (2020).
- Melissa Powell-Williams, Todd Powell-Williams, H. David Hunt, Effects of officer perception of race and racial tensions on support for body-worn-cameras, Journal of Ethnicity in Criminal Justice, 10.1080/15377938.2020.1842281, (1-24), (2020).
- Ben R Martain, Vincent Harinam, Barak Ariel, Linking body worn camera activation with complaints: The promise of metadata, Australian & New Zealand Journal of Criminology, 10.1177/0004865820976190, (000486582097619), (2020).
- Aili Malm, Promise of police body‐worn cameras, Criminology & Public Policy, 10.1111/1745-9133.12420, 18, 1, (119-130), (2019).
- Michael D. White, Translating the story on body‐worn cameras, Criminology & Public Policy, 10.1111/1745-9133.12421, 18, 1, (89-91), (2019).
- Christopher S. Koper, Cynthia Lum, Critic, Police Innovation, 10.1017/9781108278423, (517-543), (2019).
- Mitchell Zamoff, Brad Greenwood, Gordon Burtch, Who Watches the Watchmen: Evidence of the Effect of Body-Worn Cameras on New York City Policing, SSRN Electronic Journal, 10.2139/ssrn.3490785, (2019).
- Taeho Kim, The Power of Observation: An Empirical Analysis of the Effects of Body Worn Cameras on Police Use of Force and Productivity, SSRN Electronic Journal, 10.2139/ssrn.3474634, (2019).
- Cynthia Lum, Christopher S. Koper, David B. Wilson, Megan Stoltz, Michael Goodier, Elizabeth Eggins, Angela Higginson, Lorraine Mazerolle, PROTOCOL: Body‐worn cameras’ effects on police officers and citizen behavior: A systematic review, Campbell Systematic Reviews, 10.1002/cl2.1043, 15, 3, (2019).
- Alana Saulnier, Ermus St Louis, William McCarty, Procedural justice concerns and support for BWCs: turning the lens to officer perceptions, Policing: An International Journal, 10.1108/PIJPSM-09-2018-0137, (2019).
- Barak Ariel, Renée J. Mitchell, Justice Tankebe, Maria Emilia Firpo, Ricardo Fraiman, Jordan M. Hyatt, Using Wearable Technology to Increase Police Legitimacy in Uruguay: The Case of Body-Worn Cameras, Law & Social Inquiry, 10.1017/lsi.2019.13, (1-29), (2019).
- Keith Guzik, A. Sesay, O. Oh, R. Ramirez, T. Tong, Making the material routine: a sociomaterial study of the relationship between police body worn cameras (BWCs) and organisational routines, Policing and Society, 10.1080/10439463.2019.1705823, (1-16), (2019).
- Cody W. Telep, Claudia Gross Shader, Creating a ‘what works’ translational tool for police: a researcher-city government partnership, Police Practice and Research, 10.1080/15614263.2019.1657630, (1-14), (2019).
- Callum Christodoulou, Helen Paterson, Richard Kemp, Body-worn cameras: evidence-base and implications, Current Issues in Criminal Justice, 10.1080/10345329.2019.1639590, (1-12), (2019).
- Matthew S. Crow, John Ortiz Smykla, Police Body-Worn Cameras: Research Developments on an Emerging Technology, Criminal Justice Review, 10.1177/0734016819854789, (073401681985478), (2019).
- Wendy M. Koslicki, Accountability or Efficiency? Body-Worn Cameras as Replicative Technology, Criminal Justice Review, 10.1177/0734016819856079, (073401681985607), (2019).
- Emmeline Taylor, Murray Lee, Points of View: Arrestees’ Perspectives on Police Body-Worn Cameras and their Perceived Impact on Police–Citizen Interactions, The British Journal of Criminology, 10.1093/bjc/azz007, (2019).
- Joseph Clare, Darren Henstock, Christine McComb, Roy Newland, Geoffrey C. Barnes, Murray Lee, Emmeline Taylor, Police, Public, and Arrestee Perceptions of Body-Worn Video: A Single Jurisdictional Multiple-Perspective Analysis, Criminal Justice Review, 10.1177/0734016819846236, (073401681984623), (2019).
- Ian Adams, Sharon Mastracci, Police Body-Worn Cameras: Development of the Perceived Intensity of Monitoring Scale, Criminal Justice Review, 10.1177/0734016819846219, (073401681984621), (2019).
- Barak Ariel, Alex Sutherland, Matthew Bland, 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, 10.1007/s11292-019-09399-6, (2019).
- Jordan Nichols, Sean Wire, Xiaoyun Wu, Madeline Sloan, Amber Scherer, Translational criminology and its importance in policing: a review, Police Practice and Research, 10.1080/15614263.2019.1657625, (1-15), (2019).
- Jamie A. Snyder, Matthew S. Crow, John Ortiz Smykla, Police Officer and Supervisor Perceptions of Body-Worn Cameras Pre- and Postimplementation: The Importance of Officer Buy-in, Criminal Justice Review, 10.1177/0734016819846223, (073401681984622), (2019).
- Scott M. Mourtgos, Ian T. Adams, Assessing Public Perceptions of Police Use-of-Force: Legal Reasonableness and Community Standards, Justice Quarterly, 10.1080/07418825.2019.1679864, (1-31), (2019).
- Anthony A. Braga, Lisa M. Barao, Gregory M. Zimmerman, Stephen Douglas, Keller Sheppard, Measuring the Direct and Spillover Effects of Body Worn Cameras on the Civility of Police–Citizen Encounters and Police Work Activities, Journal of Quantitative Criminology, 10.1007/s10940-019-09434-9, (2019).
- Daniel S. Lawrence, Bryce E. Peterson, How do body-worn cameras affect the amount and makeup of police-initiated activities? A randomized controlled trial in Milwaukee, Wisconsin, Journal of Experimental Criminology, 10.1007/s11292-019-09385-y, (2019).
- Elizabeth R. Groff, Cory Haberman, Jennifer D. Wood, The effects of body-worn cameras on police-citizen encounters and police activity: evaluation of a pilot implementation in Philadelphia, PA, Journal of Experimental Criminology, 10.1007/s11292-019-09383-0, (2019).
- Joseph Clare, Darren Henstock, Christine McComb, Roy Newland, Geoffrey C. Barnes, The results of a randomized controlled trial of police body-worn video in Australia, Journal of Experimental Criminology, 10.1007/s11292-019-09387-w, (2019).




