Christopher S. Koper

4.2k total citations · 1 hit paper
81 papers, 2.6k citations indexed

About

Christopher S. Koper is a scholar working on Sociology and Political Science, Health and Political Science and International Relations. According to data from OpenAlex, Christopher S. Koper has authored 81 papers receiving a total of 2.6k indexed citations (citations by other indexed papers that have themselves been cited), including 66 papers in Sociology and Political Science, 35 papers in Health and 32 papers in Political Science and International Relations. Recurrent topics in Christopher S. Koper's work include Crime Patterns and Interventions (64 papers), Gun Ownership and Violence Research (35 papers) and Policing Practices and Perceptions (32 papers). Christopher S. Koper is often cited by papers focused on Crime Patterns and Interventions (64 papers), Gun Ownership and Violence Research (35 papers) and Policing Practices and Perceptions (32 papers). Christopher S. Koper collaborates with scholars based in United States, Slovenia and Australia. Christopher S. Koper's co-authors include Cynthia Lum, Bruce G. Taylor, Cody W. Telep, Megan Stoltz, Daniel J. Woods, Xiaoyun Wu, Sally S. Simpson, J. Amber Scherer, James J. Willis and Denise C. Gottfredson and has published in prestigious journals such as Journal of Consulting and Clinical Psychology, BMC Public Health and Criminology.

In The Last Decade

Christopher S. Koper

76 papers receiving 2.4k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Research on body‐worn cameras

2019 236 citations Cynthia Lum, Megan Stoltz et al. Criminology & Public Policy profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Christopher S. Koper United States	26	2.1k	1.2k	650	374	252	81	2.6k
Cynthia Lum United States	28	3.0k 1.5×	1.5k 1.2×	538 0.8×	364 1.0×	363 1.4×	86	3.6k
Barak Ariel United Kingdom	30	2.4k 1.2×	1.7k 1.4×	760 1.2×	341 0.9×	145 0.6×	113	3.0k
Cody W. Telep United States	23	2.3k 1.1×	1.4k 1.2×	366 0.6×	195 0.5×	297 1.2×	66	2.6k
Edmund F. McGarrell United States	29	2.1k 1.0×	726 0.6×	577 0.9×	432 1.2×	327 1.3×	107	2.7k
Steven M. Chermak United States	29	2.9k 1.4×	918 0.8×	724 1.1×	503 1.3×	155 0.6×	126	3.3k
John E. Eck United States	31	3.6k 1.8×	843 0.7×	399 0.6×	379 1.0×	505 2.0×	90	4.1k
Alex Sutherland United Kingdom	21	1.2k 0.6×	969 0.8×	394 0.6×	224 0.6×	182 0.7×	81	1.9k
Stephen D. Mastrofski United States	34	4.1k 2.0×	3.6k 3.0×	944 1.5×	278 0.7×	193 0.8×	59	4.7k
Joseph Schafer United States	24	1.5k 0.7×	990 0.8×	389 0.6×	223 0.6×	141 0.6×	83	1.9k
Nick Tilley United Kingdom	27	1.8k 0.9×	408 0.3×	235 0.4×	254 0.7×	506 2.0×	119	2.4k

Countries citing papers authored by Christopher S. Koper

Since Specialization

Citations

This map shows the geographic impact of Christopher S. Koper's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Christopher S. Koper with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Christopher S. Koper more than expected).

Fields of papers citing papers by Christopher S. Koper

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Christopher S. Koper. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Christopher S. Koper. The network helps show where Christopher S. Koper may publish in the future.

Co-authorship network of co-authors of Christopher S. Koper

This figure shows the co-authorship network connecting the top 25 collaborators of Christopher S. Koper. A scholar is included among the top collaborators of Christopher S. Koper based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Christopher S. Koper. Christopher S. Koper is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Lum, Cynthia, et al.. (2025). Measuring the Cost-Effectiveness of New Technologies in Policing: The Case of Automatic License Plate Readers (ALPR). 9(1).

Lum, Cynthia, et al.. (2024). Do Community Views of Local Police Agencies Change During “Crises of Legitimacy”? Results of a Multi-wave Random Sample Community Survey in a Large Suburban Jurisdiction. American Journal of Criminal Justice. 50(1). 35–57. 1 indexed citations

Koper, Christopher S., et al.. (2024). Concealed firearm carrying laws and defensive firearm use in public locations of US metropolitan areas, 1986–2004. Injury Prevention. 31(6). ip–2024.

Koper, Christopher S., et al.. (2024). Less-Lethal Weapons and Civilian Injury in Police Use of Force Encounters: A Multi-agency Analysis. Journal of Urban Health. 102(2). 389–399. 1 indexed citations

Dong, Beidi, et al.. (2024). Gun violence research from a micro-place perspective: A scoping review. Aggression and Violent Behavior. 78. 101951–101951.

Wu, Xiaoyun, Christopher S. Koper, & Cynthia Lum. (2021). Measuring the Impacts of Everyday Police Proactive Activities: Tackling the Endogeneity Problem. Journal of Quantitative Criminology. 38(2). 343–363. 4 indexed citations

Lum, Cynthia, Christopher S. Koper, David B. Wilson, et al.. (2020). Body‐worn cameras’ effects on police officers and citizen behavior: A systematic review. Campbell Systematic Reviews. 16(3). e1112–e1112. 121 indexed citations

Koper, Christopher S., et al.. (2020). Proactive policing in the United States: a national survey. Policing An International Journal. 43(5). 861–876. 21 indexed citations

Koper, Christopher S. & Cynthia Lum. (2020). Editorial Introduction to the Special Issue on Policing. Criminology & Public Policy. 19(3). 691–692. 1 indexed citations

10.

Lum, Cynthia, Christopher S. Koper, David B. Wilson, et al.. (2019). PROTOCOL: Body‐worn cameras’ effects on police officers and citizen behavior: A systematic review. Campbell Systematic Reviews. 15(3). e1043–e1043. 3 indexed citations

11.

Willis, James J., Christopher S. Koper, & Cynthia Lum. (2018). Technology use and constituting structures: accounting for the consequences of information technology on police organisational change. Policing & Society. 30(5). 483–501. 19 indexed citations

12.

Koper, Christopher S., Bruce G. Taylor, & Daniel J. Woods. (2013). A randomized test of initial and residual deterrence from directed patrols and use of license plate readers at crime hot spots. Journal of Experimental Criminology. 9(2). 213–244. 41 indexed citations

13.

Koper, Christopher S. & Evan Mayo‐Wilson. (2012). Police Strategies for Reducing Illegal Possession and Carrying of Firearms. Campbell Systematic Reviews. 8(11). 1 indexed citations

14.

Koper, Christopher S. & Evan Mayo‐Wilson. (2012). Police strategies to reduce illegal possession and carrying of firearms: effects on gun crime. Campbell Systematic Reviews. 8(1). 1–53. 28 indexed citations

15.

Wiebe, Douglas J., Robert T. Krafty, Christopher S. Koper, et al.. (2009). Homicide and geographic access to gun dealers in the United States. BMC Public Health. 9(1). 199–199. 34 indexed citations

16.

Koper, Christopher S.. (2007). Crime Gun Risk Factors: Buyer, Seller, Firearm, and Transaction Characteristics Associated with Gun Trafficking and Criminal Gun Use. 7 indexed citations

17.

Koper, Christopher S.. (2003). PROTOCOL: Police Strategies for Reducing Illegal Possession and Carrying of Firearms. Campbell Systematic Reviews. 1(1). 1–23. 3 indexed citations

18.

Koper, Christopher S., et al.. (2003). Impact of handgun types on gun assault outcomes: a comparison of gun assaults involving semiautomatic pistols and revolvers. Injury Prevention. 9(2). 151–155. 21 indexed citations

19.

Koper, Christopher S. & Jeffrey A. Roth. (2001). A Priori Assertions Versus Empirical Inquiry: A Reply to Kleck. Journal of Quantitative Criminology. 17(1). 81–88. 7 indexed citations

20.

Gottfredson, Denise C. & Christopher S. Koper. (1997). Race and sex differences in the measurement of risk for drug use. Journal of Quantitative Criminology. 13(3). 325–347. 10 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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