A Department of Homeland Security Emeritus Center of Excellence led by the University of Maryland

Lone Actor


Lone Actor

Project Title Investigators Project Period
Global Terrorism Database (GTD) Acceleration Erin Miller January, 2019 to January, 2020
Global Terrorism Database (GTD) Erin Miller, Gary LaFree, Laura Dugan June, 2001 to January, 2020
A Toolkit for Preventing Targeted Violence on College Campuses Gary LaFree July, 2017 to July, 2018
Country Reports on Terrorism - Statistical Annex Gary LaFree, Erin Miller May, 2012 to May, 2018
Radicalization of Momin Khawaja Clark McCauley, Sophia Moskalenko July, 2013 to June, 2015
Project Title Publication Date START Authors Publication Type
A Situated Comparison of Suicide and Non-Suicide Terrorist Plots and Homicides in the United States, 1990-2014 September 2018 Gruenewald, Jeff; Freilich, Joshua; Chermak, Steven; Parkin, William Journal Article
Across the Universe? A Comparative Analysis of Violent Radicalization Across Three Offender Types With Implications for Criminal Justice Training and Education June 2016 Horgan, John Report
Actions Speak Louder than Words: A Behavioral Analysis of 183 Individuals Convicted for Terrorist Offenses in the United States from 1995 to 2012 September 2016 Horgan, John Journal Article
An Army of One: Assessing CBRN Pursuit and Use by Lone Wolves and Autonomous Cells January 2014 Ackerman, Gary; Pinson, Lauren Journal Article
Attitudes Regarding Becoming an Engaged Bystander for Targeted Violence Prevention May 2020 Weine, Stevan Journal Article
Characteristics of Lone-Wolf Violent Offenders: a Comparison of Assassins and School Attackers February 2013 McCauley, Clark; Moskalenko, Sophia Journal Article
Deadlier in the U.S.? On Lone Wolves, Terrorist Groups, and Attack Lethality November 2015 Phillips, Brian Journal Article
Discussion Point: Is Aaron Alexis part of a larger phenomenon of lone-actor grievance-based violence? September 2013 McCauley, Clark Discussion Point
Far-Right Lone Wolf Homicides in the United States November 2013 Gruenewald, Jeff; Freilich, Joshua; Chermak, Steven Journal Article
Gauging the Threat August 2013 Ackerman, Gary; Pinson, Lauren Journal Article
How “Alone” are Lone-Actors? Exploring the Ideological, Signaling, and Support Networks of Lone-Actor Terrorists October 2018 Hofmann, David Journal Article
Lone Wolf Terrorists: What Motivates Them? March 2017 McCauley, Clark; Moskalenko, Sophia Journal Article
Lone-Offender Terrorists July 2013 LaFree, Gary Journal Article
Loners, Colleagues, or Peers? Assessing the Social Organization of Radicalization April 2018 Freilich, Joshua; Chermak, Steven Journal Article
Patterns of Lone Actor Terrorism in the United States: Research Brief October 2014 Smith, Brent; Gruenewald, Jeff; Roberts, Paxton Research Brief
Surveying American State Police Agencies about Lone Wolves, Far-Right Criminality, and Far-Right and Islamic Jihadist Criminal Collaboration January 2010 Freilich, Joshua; Chermak, Steven Journal Article
The Emergence of Lone Wolf Terrorism: Patterns of Behavior and Implications for Intervention September 2015 Smith, Brent; Gruenewald, Jeff; Damphousse, Kelly; Roberts, Paxton Journal Article
The psychology of lone-wolf terrorism July 2011 McCauley, Clark; Moskalenko, Sophia Journal Article
The Situated Contexts of American Terrorism: A Conjunctive Analysis of Case Configurations April 2019 Smith, Brent; Gruenewald, Jeff Journal Article
Toward a Profile of Lone Wolf Terrorists: What Moves an Individual from Radical Opinion to Radical Action January 2014 McCauley, Clark; Moskalenko, Sophia Journal Article
What is lone wolf terrorism? November 2009 LaFree, Gary; Freilich, Joshua; Simi, Peter; Chermak, Steven Book Chapter

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