Publications

This page provides links to our various publications. It is updated every Monday. If you have trouble accessing something, please let us know.

Kyle McLean, Trey Bussey, Justin Nix, Jeff Rojek, Abigail Curran, Vivian Ta-Johnson, Geoffrey P. Alpert (2026). Developing and validating an emotion recognition test for policing. Policing: An International Journal, 49(1), 52-72.

Callie Vitro, Erin Kearns, Isaac J. Moelter (2025). See something, say something? Examining variation in willingness to report suspicious activity to police across racial and ethnic groups. Policing: An International Journal.

Travis Carter, Rachel L. McNealey (2025). Protection motivation and cybersecurity intentions: a visual conjoint experiment. Journal of Experimental Criminology.

Marie Ouellet, Sadaf Hashimi, Jason Gravel, Dean Dabney (2025). The Network Effect: Using Science to Build Better Police Forces. Police Chief Magazine.

Kyle McLean, Trey Bussey, Justin Nix, Jeffrey Rojek, Geoffrey P. Alpert (2025). Police de-escalation training and its effects on communication: Evidence from an experimental evaluation. CrimRxiv.

Teresa Kulig, Sadaf Hashimi, Valeria Torres-Rivera, Kaitlyn Swanberg, Morgan Goslar (2025). An Assessment of Labor Trafficking in Nebraska.

Hunter Boehme, Scott M. Mourtgos, Sohee Jung, Ian T. Adams, Justin Nix (2025). The Unintended Consequences of State-Level Drug Decriminalization Laws: Implications for Arrest and Crime Rates. CrimRxiv.

Sam Clinkinbeard, Rachael Rief, Trisha N. Rhodes, Lexi E. Goodijohn (2025). Navigating Entry: The Role of Exposure and Career Fit Negotiation in Women’s Pathways to Policing in the United States. Justice Quarterly.

Marie Ouellet, Sadaf Hashimi, Jason Gravel, Dean Dabney (2025). The Influence of Workplace Friendships on Police Firearm Use. Justice Quarterly.

Jedidiah L. Knode, Travis Carter, Scott E. Wolfe (2025). Beyond Identification: A Problem-Oriented Approach to Diagnosing Racial Disparities in Policing. Journal of Quantitative Criminology.

Tara N. Richards, Justin Nix, Emily Wright, Caralin Branscum, Bradley A. Campbell (2025). The Minnesota Sexual Assault Kit Initiative (SAKI): Lessons Learned from a Decade of SAKI Evaluations. Justice Evaluation Journal.

Justin Nix (2025). Responding to Kang-Brown (again). CrimRxiv.

Justin Nix, Ian T. Adams, Josh McCrain (2025). Measuring and studying officer-involved shootings in the U.S.: Comparing estimates from multiple open-source registries. Gun violence-Statistical issues, pp. TBD.

Justin Nix, Jessica Huff, Scott Wolfe, David Pyrooz, Scott Mourtgos (2025). When police pull back: Neighborhood-level effects of de-policing on violent and property crime. Criminology, 62(1), 156-171.

DOI Preprint Slides Replication Materials

Sadaf Hashimi (2025). Transforming, Renewing, Achieving, and Connecting (TRAC), a higher education in prison program.

Marie Ouellet, Sadaf Hashimi, Jason Gravel, Dean Dabney (2025). The structure of officer-involved shootings: Investigating the social transmission of firearm use. National Collaborative for Gun Violence Research.

Sarah Al Falatah, Sadaf Hashimi (2025). The implications of the COVID-19 pandemic on attempted suicide trends. University of Nebraska Omaha.

Erin Kearns, Sadaf Hashimi, Jessie Huff, Justin Nix, Natalie Cotton (2025). Screening for insider threats in US law enforcement: A national sample of department policies and practices. State of Practice Guide.

Sadaf Hashimi, Marie Ouellet, Logan Ledford (2025). Partners in Force? Understanding Police Use of Force from a Network Perspective. Journal of Research in Crime and Delinquency.

Sadaf Hashimi, Marie Ouellet (2025). Invite Only: The Prevalence of Subgroups Within a Police Department. Journal of Criminal Justice.

Jedidiah L. Knode, Travis Carter, Scott E. Wolfe (2024). Driving While Broke: The Role of Class Signals in Police Discretion. Justice Quarterly.

Erin Kearns, Casey Delehanty (2024). The Fast & The Furious…Torturous? : Examining the Impact of Torture Scenes in Popular Films on Public Perceptions of Torture Policy. Studies in Conflict & Terrorism.

Isaac J. Moelter, Erin Kearns (2024). How Do Offender Ideology and Offense Severity Impact Punitive Attitudes Toward Politically Motivated Offenders in the U.S.?. Studies in Conflict & Terrorism.

Scott M. Mourtgos, Ian T. Adams, Justin Nix (2024). Staffing Levels are the Most Important Factor Influencing Police Response Times. Policing: A Journal of Policy and Practice, 18, paae002.

Travis Carter, Scott E. Wolfe, Yongjae Nam, Spencer G. Lawson (2023). Front porch roll calls: an innovative approach to community-oriented policing in Saginaw, MI. Policing: An International Journal.

Tara N. Richards, Gillian M. Pinchevsky, Justin Nix (2023). Evidence-Based Practices for Policing Domestic Violence. Handbook of Evidence-Based Criminal Justice Practices, pp. 203-210.

Erin Kearns, Justin Nix (2023). How generalizable are findings from police surveys? A review of multi-agency studies. Police Practice and Research, 24, 597-611.

Ian T. Adams, Scott Mourtgos, Justin Nix (2023). Turnover in Large US Policing Agencies Following the George Floyd Protests. Journal of Criminal Justice, 88(102105), 1-16.

DOI Postprint Replication Materials

Adam Ghazi-Tehrani, Erin Kearns (2023). Biased Coverage of Bias Crime: Examining Differences in Media Coverage of Hate Crimes and Terrorism. Studies in Conflict & Terrorism.

Kyle McLean, Justin Nix, Seth W. Stoughton, Ian T. Adams, Geoffrey P. Alpert (2023). An experimental look at reasonable suspicion and police discretion. Policing: An International Journal, 46(3), 503-520.

DOI Postprint Slides

Michael Sierra-Arévalo, Justin Nix, Scott M. Mourtgos (2023). The "War on Cops," Retaliatory Violence, and the Murder of George Floyd. Criminology, 61(3), 389-420.

DOI Postprint Slides

Travis Carter, Chris Melde (2022). Fear, risk, and local control: Testing the generality of Ferraro’s risk interpretation framework.

Travis Carter, Scott Wolfe (2022). The effect of real-world proactive policing on crime.

Michael Ostermann, Sadaf Hashimi (2022). Recidivism among People Convicted of Gun Offenses: A Call to Better Leverage Reentry Resources to Decrease Gun Violence. Justice Quarterly.

Sadaf Hashimi, David Schaefer (2022). The Co-evolution of Friendship and Power Relations in a Men's Prison Unit. Journal of Quantitative Criminology.

Kyle McLean, Justin Nix (2022). Understanding the Bounds of Legitimacy: Weber’s Facets of Legitimacy and the Police Empowerment Hypothesis. Justice Quarterly, 39(6), 1287-1309.

Justin Pickett, Amanda Graham, Justin Nix, Francis T. Cullen (2022). Officer Diversity May Reduce Black Americans’ Fear of the Police. Criminology, 62(1), 35-63.

DOI Preprint Replication Materials

Marie Ouellet, Sadaf Hashimi, George G. Vega Yon (2022). Officer networks and firearm behaviors: Assessing the social transmission of weapon-use. Journal of Quantitative Criminology.

Michael Sierra-Arévalo, Justin Nix, Bradley O’Guinn (2022). A national analysis of trauma care proximity and firearm assault survival among U.S. police. Police Practice and Research, 23(3), 388-396.

Brandon Tregle, Justin Nix, Justin T. Pickett (2022). Body-Worn Cameras and Transparency: Experimental Evidence of Inconsistency in Police Executive Decision-Making. Justice Quarterly, 39(3), 455-477.

DOI Postprint Replication Materials

Matthew J. Dolliver, Erin Kearns (2022). Is It Terrorism?: Public Perceptions, Media, and Labeling the Las Vegas Shooting. Studies in Conflict & Terrorism.

Erin Kearns, Christopher Federico, Victor Asal, James Igoe Walsh, Allison E. Betus, Anthony F. Lemieux (2022). Intergroup images mediate the relationships between government abuse, sociopolitical orientations, and political action. Dynamics of Asymmetric Conflict.

Justin Nix, John A. Shjarback (2021). Factors associated with police shooting mortality: A focus on race and a plea for more comprehensive data. PLOS ONE, 16(11), e0259024.

DOI Postprint Replication Materials Slides

Justin Nix, Tara N. Richards, Gillian M. Pinchevsky, Emily M. Wright (2021). Are Domestic Incidents Really More Dangerous to Police? Findings from the 2016 National Incident Based Reporting System. Justice Quarterly, 38(7), 1405-1427.

Rachael Rief, Sam Clinkinbeard (2021). Examining police officers’ perceptions of stress: the role of Person−environment fit. Policing: An International Journal.

Sadaf Hashimi, Sara Wakefield, Robert Apel (2021). Sibling transmission of gang involvement. Journal of Research in Crime and Delinquency, 58(5).

Justin Nix, Tara N. Richards (2021). The immediate and long-term effects of COVID-19 stay-at-home orders on domestic violence calls for service across six U.S. jurisdictions. Police Practice and Research, 22(4), 1443-1451.

DOI Postprint Replication Materials

Justin Nix, M. J. Lozada (2021). Police killings of unarmed black Americans: a reassessment of community mental health spillover effects. Police Practice and Research, 22(3), 1330-1339.

DOI Postprint Data

Erin Kearns (2021). When to Take Credit for Terrorism? A Cross-National Examination of Claims and Attributions. Terrorism and Political Violence.

Marie Ouellet, Sadaf Hashimi, Jason Gravel, Dean Dabney (2020). The Promise of a Network Approach for Policing Research. Justice Quarterly, 37(7).

Justin Nix (2020). On the challenges associated with the study of police use of deadly force in the United States: A response to Schwartz & Jahn. PLOS ONE, 15(7), e0236158.

Erin Kearns, Emma Ashooh, Belén Lowrey-Kinberg (2020). Racial Differences in Conceptualizing Legitimacy and Trust in Police. American Journal of Criminal Justice.

Justin Nix, Justin T. Pickett, Renée J. Mitchell (2019). Compliance, noncompliance, and the in-between: causal effects of civilian demeanor on police officers’ cognitions and emotions. Journal of Experimental Criminology, 15, 611-639.

DOI Replication Materials

Justin T. Pickett, Justin Nix (2019). Demeanor and police culture: Theorizing how civilian cooperation influences police officers. Policing: An International Journal, 42(4), 537-555.

Marie Ouellet, Sadaf Hashimi, Jason Gravel, Andrew Papachristos (2019). Network exposure and excessive use of force: Investigating the social transmission of police misconduct. Criminology & Public Policy, 18(3), 675-704.

Justin Nix, Justin T. Pickett, Hyunin Baek, Geoffrey P. Alpert (2019). Police research, officer surveys, and response rates. Policing and Society, 29(5), 530-550.

Justin Nix, Scott E. Wolfe, Brandon Tregle (2018). Police officers’ attitudes toward citizen advisory councils. Policing: An International Journal, 41(4), 418-434.

Justin Nix, Scott E. Wolfe (2018). Management-level officers’ experiences with the Ferguson effect. Policing: An International Journal, 41(2), 262-275.

Justin Nix, Scott E. Wolfe, Bradley A. Campbell (2018). Command-level Police Officers’ Perceptions of the “War on Cops” and De-policing. Justice Quarterly, 35(1), 33-54.

Justin Nix, Justin T. Pickett, Scott E. Wolfe, Bradley A. Campbell (2017). Demeanor, Race, and Police Perceptions of Procedural Justice: Evidence from Two Randomized Experiments. Justice Quarterly, 34(7), 1154-1183.

Edward R. Maguire, Justin Nix, Bradley A. Campbell (2017). A War on Cops? The Effects of Ferguson on the Number of U.S. Police Officers Murdered in the Line of Duty. Justice Quarterly, 34(5), 739-758.

Erin Kearns, Joseph K. Young (2014). Military Tactics in Civil War. Routledge Handbook of Civil Wars.

Sam Clinkinbeard, Tusty Zohra (2011). Expectations, Fears, and Strategies. Youth & Society.

Sam Clinkinbeard, Pete Simi, Mary K. Evans, Amy L. Anderson (2010). Sleep and Delinquency: Does the Amount of Sleep Matter?. Journal of Youth and Adolescence.