Policing
Research

Independent research and evaluation to strengthen safety, accountability, and decision-making.

Directed by John DeCarlo, Ph.D.

Methodologically Rigorous.
Policy-Relevant.

Policing Research provides empirical analysis, evidence synthesis, and applied evaluation for agencies, policymakers, researchers, attorneys, and foundations. All work is grounded in transparent methods, peer-reviewed scholarship, and real-world operational experience.

"All research and analysis are conducted independently, without institutional or partisan affiliation. Our commitment is to the evidence and to the communities that policing serves."

Focus Areas

01

Use of Force & Decision-Making

Empirical analysis of officer decision-making under threat, including the first randomized controlled trial on contagion shooting (2024).

02

Police Training & Evaluation

Assessment of training methodologies and their impact on operational outcomes, including DOJ COPS Office reports on police education.

03

Neuroscience of Policing

fNIRS and EEG research imaging the prefrontal cortex of officers during shooting decisions under threat. NSF grant pending.

04

Eyewitness Identification

Research on interrogation recording effects and eyewitness identification procedures, with Saul Kassin and colleagues.

05

Organizational Accountability

Analysis of police accountability, labor unions, and organizational change — including independent investigations for government agencies.

Featured Research

Experimental2024

An Experimental Test of the Contagious Fire Thesis in Policing

Journal of Criminal Justice, 93

The first empirical test of the contagious fire thesis using a randomized controlled trial, quantifying the phenomenon and offering an explanatory framework.

Book2025

Fundamentals of Police Science (2nd ed.)

Kendall-Hunt

With Jenkins and Dlugolenski — a comprehensive textbook covering the scientific foundations of modern policing, now in its second edition.

Current ResearchPending

Neural Mechanisms of Contagious Action Selection Under Threat

NSF Grant Proposal ($224,957)

Using fNIRS to image the prefrontal cortex of police officers making shooting decisions while under threat. With David Myers.

University campus

John DeCarlo, Ph.D.

Full Professor of Criminal Justice at the University of New Haven and retired chief of police with experience spanning research, practice, and policy. Founder of the Center for Policing, Innovation, and Research.

Director of the Master's Program in Criminal Justice at UNH. Research interests include use of force, police decision-making, neuroscience applications in policing, and organizational accountability.

University of New HavenPh.D., CUNY Graduate CenterFormer Chief of Police
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Research Partnerships & Inquiries

Policing Research responds to inquiries related to research partnerships, grant collaboration, expert consultation, policy analysis, and media inquiries.