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

Terrorism Trends


Terrorism Trends

Project Title Investigators Project Period
Developing Academic Partnerships and Collaborative Research on Countering Violent Extremism in Malaysia and Southeast Asia Amy Pate, Barnett S. Koven, William Braniff September, 2018 to September, 2020
Program to Prepare Communities for Complex Coordinated Terrorist Attacks Erin Miller October, 2017 to August, 2020
Two to Tango: Government and Terrorist Group Actions in Colombia Barnett S. Koven March, 2018 to June, 2018
Global Terrorism Database (GTD) Erin Miller, Gary LaFree, Laura Dugan June, 2001 to June, 2018
Country Reports on Terrorism - Statistical Annex Gary LaFree, Erin Miller May, 2012 to May, 2018
Modeling Terrorism Onset and Intensity Dynamics Using the GTD Claudio Cioffi-Revilla, Nina Fefferman July, 2016 to December, 2017
Dynamics of Terrorism and Counterterrorism Campaigns Gary Ackerman, Joseph Young, R. Karl Rethemeyer, Victor Asal July, 2014 to December, 2017
Geospatial and Temporal Patterns of US Terrorism Brent Smith, Kelly Damphousse July, 2012 to December, 2017
Terrorist Attacks on the Homeland Gary LaFree, Laura Dugan, Erin Miller July, 2012 to December, 2017
Shadows of Violence: Empirical Assessments of Threats, Coercion and Gray Zones Amy Pate, Barnett S. Koven July, 2016 to June, 2017
Empirical Assessment of Domestic Radicalization (EADR) Michael Jensen, Gary LaFree January, 2013 to December, 2016
School Emergency Public Information and Warning/Information Sharing Brooke Liu, Holly Roberts October, 2015 to September, 2016
Massive Online Open Course: Understanding Terrorism and the Terrorist Threat Gary LaFree, William Braniff, Katherine Worboys Izsak January, 2014 to March, 2014
The Ecology of Terrorist Organizations Jonathan Wilkenfeld, Victor Asal, Gary LaFree October, 2008 to December, 2012
Radicalization Clusters? Geographic Concentrations of Violent Extremism and Terrorism in the United States Kathleen Smarick October, 2010 to December, 2011
Guerilla Insurgency: The Springboard to Terrorism? Mark Lichbach June, 2008 to August, 2011
Predisposing Root Causes of Terrorism Gary LaFree June, 2005 to June, 2009
Modeling Risk of Future Terrorist Attacks Gary LaFree, Laura Dugan May, 2005 to June, 2009
Distinctive Characteristics of Terrorist Groups Gary LaFree, Laura Dugan January, 2005 to June, 2009
Project Title Publication Date START Authors Publication Type
"Causas del Terrorismo: Politica April 2005 Crenshaw, Martha Journal Article
"Comments on John Mueller, 'Six Rather Unusual Propositions about Terrorism October 2005 Crenshaw, Martha Journal Article
"I'm down for a Jihad": How 100 Years of Gang Research can Inform the Study of Terrorism, Radicalization and Extremism February 2015 Pyrooz, David C.; Decker, Scott H. Journal Article
"I'm down for a Jihad": How 100 Years of Gang Research can Inform the Study of Terrorism, Radicalization and Extremism February 2015 Journal Article
100 Years of Irish Republican Violence April 2016 Horgan, John Journal Article
45 Years of Terrorism: Terrorist Attacks 1970-2015, Concentation and Intensity July 2016 Kammerer, William Map
A Community Level Comparison of Terrorism Movements in the United States July 2016 Smith, Brent; Gruenewald, Jeff; Fitzpatrick, Kevin; Roberts, Paxton Journal Article
A First Look at Domestic and International Global Terrorism Events, 1970-1997 May 2006 LaFree, Gary; Dugan, Laura Conference Paper
A Look at Terrorist Behavior: How They Prepare, Where They Strike July 2008 Smith, Brent Journal Article
A Preliminary Typology Mapping Pathways of Learning and Innovation by Modern Jihadist Groups September 2016 Singh, Rashmi Journal Article
A Supply-Side View of Suicide Terrorism: A Cross-National Study January 2008 Piazza, James A. Journal Article
Across the Divide: Reflections of a Collaborative Class on Terrorism May 2010 Lemieux, Anthony Journal Article
Al-Shabaab Attack on Westgate Mall in Kenya September 2013 Miller, Erin Background Report
Alienation, Religion, Economics and Politics: Testing Theories of Radicalization in Polls of U.S. Muslims January 2009 McCauley, Clark START Reports
American Deaths in Terrorist Attacks October 2015 Miller, Erin; Jensen, Michael Fact Sheet
American Deaths in Terrorist Attacks, 1995 - 2017 September 2018 Miller, Erin; Jensen, Michael Project Fact Sheet
American Deaths in Terrorist Attacks, 1995-2015 September 2016 Miller, Erin; Jensen, Michael Fact Sheet
American Deaths in Terrorist Attacks, 1995-2016 November 2017 Miller, Erin; Jensen, Michael Research Brief
An Evaluation of Displacement and Diffusion Effects on Eco-Terrorist Activities After Police Interventions October 2017 Yang, Sue-Ming Journal Article
An Experimental Investigation of the Choice of Terror and Support for Taking Action January 2008 Lemieux, Anthony; Wilkenfeld, Jonathan; Asal, Victor Research Brief
Analysis of Factors Related to Hate Crime and Terrorism December 2012 Deloughery, Kathleen; Rethemeyer, R. Karl; King, Ryan D.; Asal, Victor START Reports
Annex of Statistical Information: Country Reports on Terrorism 2016 July 2017 Miller, Erin START Reports
Apparent intended lethality: Toward a model of intent to harm in terrorist bomb attacks April 2013 Wilson, Margaret Journal Article
August 2013 Security Threat to Americans Abroad August 2013 Miller, Erin Background Report
Autocracies and Terrorism: Conditioning Effects of Authoritarian Regime-Type on Terrorist Attacks October 2013 Piazza, James A. Journal Article
Black Swans and Burstiness -- Countering Myths about Terrorism December 2012 LaFree, Gary Discussion Point
Boko Haram: An Assessment of Strengths, Vulnerabilities, and Policy Options January 2015 Pate, Amy START Reports
Bombings at the 2013 Boston Marathon April 2013 Miller, Erin; Smarick, Kathleen Background Report
Book Review: Lutz, J. M., & Lutz, B. J. (2005). Terrorism: Origins and Evolution. January 2007 Chenoweth, Erica Book Review
Carrots, Sticks, and Insurgent Targeting of Civilians August 2018 Phillips, Brian; Young, Joseph; Rethemeyer, R. Karl; Asal, Victor Journal Article
Characteristics of Communities where American Terrorists, Lived, Planned, and Conducted their Attacks February 2011 Smith, Brent; Damphousse, Kelly; Fitzpatrick, Kevin; Roberts, Paxton START Reports
Characteristics of Lone-Wolf Violent Offenders: a Comparison of Assassins and School Attackers February 2013 McCauley, Clark; Moskalenko, Sophia Journal Article
Characteristics of Terrorism Hotspots August 2015 Piazza, James A. Journal Article
Citizen Militias November 2007 Freilich, Joshua; Chermak, Steven Book Chapter
Close Cousins or Distance Relatives? The Relationship Between Terrorism and Hate Crime October 2012 Deloughery, Kathleen; King, Ryan; Asal, Victor Journal Article
Community‐Level Indicators of Radicalization: A Data and Methods Task Force February 2010 Fishman, Shira START Reports
Conclusion: Understanding Violent Pluralism November 2009 Arias, Enrique Book Chapter
Constructing Terrorism: From Fear and Coercion to Anger and Jujitsu Politics November 2015 McCauley, Clark Report
Countering Myths about Terrorism: Some Lessons Learned from the Global Terrorism Database November 2011 LaFree, Gary Book Chapter
Countering Terrorism: No Simple Solutions January 2017 LaFree, Gary; Crenshaw, Martha Book
Country Reports on Terrorism 2013: Annex of Statistical Information May 2014 Miller, Erin; LaFree, Gary START Reports
County-level Correlates of Terrorism in the United States, 1990 to 2010 March 2013 Bersani, Bianca; LaFree, Gary START Reports
County-level Correlates of Terrorism in the United States, 1990-2010 May 2014 Bersani, Bianca; LaFree, Gary Research Brief
County-Level Correlates of Terrorist Attacks in the United States November 2014 Bersani, Bianca; LaFree, Gary Journal Article
Crime Pays: Terrorist Group Engagement in Crime and Survival November 2017 Piazza, James A. Journal Article
Criminology Theory and Terrorism: New Applications and Approaches July 2015 LaFree, Gary; Freilich, Joshua Book
Cross-Milieu Terrorist Collaboration: Using Game Theory to Assess the Risk of a Novel Threat April 2016 Ackerman, Gary; Zhuang, Jun Journal Article
Cross-National Patterns of Terrorism: Comparing Trajectories for Total, Attributed and Fatal Attacks, 1970-2006 November 2009 LaFree, Gary; Dugan, Laura Journal Article
Deadlier in the U.S.? On Lone Wolves, Terrorist Groups, and Attack Lethality November 2015 Phillips, Brian Journal Article
Democracy, Foreign Policy, and Terrorism December 2009 Phillips, Brian Journal Article
Democratic Pieces: Democratization and the Origins of Terrorism November 2007 Chenoweth, Erica Book Chapter
Depictions of Children and Youth in the Islamic State's Martyrdom Propaganda, 2015-2016 February 2016 Horgan, John Journal Article
Desistance from Terrorism: What Can We Learn From Criminology? November 2008 Miller, Erin; LaFree, Gary Journal Article
Deterrence, Terrorism, and Psychology July 2009 Crenshaw, Martha Conference Paper
Do 90 Percent of Terrorist Groups Last Less Than a Year? Updating the Conventional Wisdom September 2017 Phillips, Brian Journal Article
Does Legitimacy Matter? Attitudes Towards Anti-American Violence in Eqypt, Morcco, and Indonesia September 2012 LaFree, Gary Journal Article
Does Political Radicalization Depend on Ideology? November 2009 McCauley, Clark Journal Article
Draining the Swamp: Democracy Promotion, State Failure, and Terrorism in 19 Middle Eastern Countries April 2007 Piazza, James A. Journal Article
Early Detection of Terrorism Outbreaks Using Prospective Space–Time Scan Statistics October 2012 Cutter, Susan Journal Article
Efficacy of Counterterrorism Approaches: Examining Northern Ireland October 2006 LaFree, Gary; Dugan, Laura Research Brief
Encouraging and Assessing the Validity of Answers to Questions about Radicalization: The Use of Meta-opinions March 2018 McCauley, Clark; Moskalenko, Sophia White Paper
Enemies with Benefits? Violent Rivalry and Terrorist Group Longevity January 2015 Phillips, Brian Journal Article
Ethnic Groups, Political Exclusion and Domestic Terrorism December 2014 Piazza, James A. Journal Article
Evaluating Counterterrorism Policies: Deterrence and Defiance Models of Violence in Northern Ireland June 2006 LaFree, Gary Conference Paper
Evolution of Global Terrorism: The Growing Lethality of Attacks January 2018 LaFree, Gary; Dugan, Laura Book Chapter
Examining Systematic Crime Reporting Bias Across Three Immigrant Generations: Prevalence, Trends, and Divergence in Self-Reported and Official Reported Arrests July 2016 Bersani, Bianca Journal Article
Explaining Terrorism: Causes, Processes and Consequences September 2013 Crenshaw, Martha Book
Extreme Hatred: Revisiting the Hate Crime and Terrorism Relationship May 2016 Freilich, Joshua; Chermak, Steven Research Brief
Extreme Hatred: Revisiting the Hate Crime and Terrorism Relationship to Determine Whether They Are "Close Cousins" or "Distant Relatives" December 2015 Freilich, Joshua; Chermak, Steven Journal Article
Fear and Anger Elicited by Terrorist Attack: The Power of Jujitsu Politics March 2016 McCauley, Clark; Moskalenko, Sophia White Paper
Forecasting the Use of Violence by Ethno–Political Organizations: Middle Eastern Minorities and the Choice of Violence, V. S. Subrahmanian, ed. November 2012 Wilkenfeld, Jonathan Book Chapter
Foreign (Terrorist) Fighter Estimates: Conceptual and Data Issues October 2015 Schmid, Alex Report
Foreign Military Interventions and Suicide Attacks March 2015 Piazza, James A. Journal Article
From Extremist to Terrorist: Identifying the Characteristics of Communities Where Perpetrators Live and Pre-Incident Activity Occurs April 2013 Smith, Brent; Damphousse, Kelly; Fitzpatrick, Kevin; Roberts, Paxton START Reports
Games Rivals Play: International Terrorism in Rivalries January 2012 Piazza, James A.; Young, Joseph Journal Article
Gangs, Terrorism, and Radicalization October 2011 Pyrooz, David C.; Decker, Scott H. Journal Article
Geospatial Patterns of Precurrsor Behavior among Terrorists June 2011 Smith, Brent; Damphousse, Kelly; Fitzpatrick, Kevin; Roberts, Paxton START Reports
Global Jihadism: Theory and Practice August 2008 Brachman, Jarret Book
Global Terrorism and the Deadliest Groups since 2001 June 2016 LaFree, Gary; Dugan, Laura Book Chapter
Global Terrorism in 2017 August 2018 Miller, Erin Background Report
Global Trends in Terrorism, 1970- 2011 April 2014 LaFree, Gary; Dugan, Laura Book Chapter
Grievance, Social Dominance Orientation, and Authoritarianism in the Choice and Justification of Terror Versus Protest November 2010 Lemieux, Anthony; Asal, Victor Journal Article
Have Motivations for Terrorism Changed? November 2005 Crenshaw, Martha Book Chapter
Heat Map: Global Terrorism Database, Terrorist Attacks 2012, Concentation and Intensity June 2013 Kammerer, William Map
Heat Map: Global Terrorism Database, Terrorist Attacks 2013, Concentation and Intensity June 2014 Kammerer, William Map
Heat Map: Global Terrorism Database, Terrorist Attacks 2014, Concentation and Intensity June 2015 Kammerer, William Map
Heat Map: Global Terrorism Database, Terrorist Attacks 2015, Concentation and Intensity June 2016 Kammerer, William Map
Heat Map: Global Terrorism Database, Terrorist Attacks 2016, Concentation and Intensity July 2017 Kammerer, William Map
Heat Map: Global Terrorism Database, Terrorist Attacks 2017, Concentation and Intensity August 2018 Kammerer, William Map
Historical perspective and future directions in research on psychiatric consequences of terrorism and other disasters November 2005 Pfefferbaum, Betty Book Chapter
How Community Ties Influence Terrorist Targeting of Civilians November 2013 Brooks, Risa Research Brief
Identifying Cross-National Global Terrorist Hot Spots November 2005 LaFree, Gary; Dugan, Laura Book Chapter
Identifying Global Terrorist Hot Spots November 2005 LaFree, Gary; Dugan, Laura Book Chapter
Identity and Framing Theory, Precursor Activity, and the Radicalization Process January 2016 Smith, Brent; Damphousse, Kelly; Fitzpatrick, Kevin; Roberts, Paxton Report
Ideological Motivations of Terrorism in the United States, 1970-2016 November 2017 Miller, Erin Background Report
Incubators of Terror: Do Failed and Failing States Promote Transnational Terrorism? September 2008 Piazza, James A. Journal Article
Infographic: Temporal Sequencing, Incident Sophistication, and Terrorist Outcomes October 2016 Smith, Brent; Gruenewald, Jeff Research Brief
Integrated United States Security Database (IUSSD): Data on the Terrorist Attacks in the United States Homeland, 1970 to 2011 December 2012 Miller, Erin; LaFree, Gary; Dugan, Laura START Reports
International Cooperation, Not Unilateral Policies May Be the Best Counterterrorism Strategy November 2008 LaFree, Gary; Yang, Sue-Ming Book Chapter
Introducing the Special Issue on New Directions in Terrorism Research May 2015 Freilich, Joshua Journal Article
Introductions to Adversary Behavior: Validating the Models April 2016 Zhuang, Jun; Bier, Vicki Journal Article
IUSSD: Data on the Terrorist Attacks in the United States Homeland 1970-2011 November 2012 Miller, Erin; LaFree, Gary; Dugan, Laura START Reports
Leaving Terrorism Behind: Individual and Collective Disengagement February 2009 Horgan, John Conference Paper
Leaving the World of Hate: Life-Course Transitions and Self-Change June 2015 Simi, Peter Journal Article
Lone-Offender Terrorists July 2013 LaFree, Gary Journal Article
Losing your Audience: Desistance from Terrorism in Egypt after Luxor November 2009 McCauley, Clark Journal Article
Lying About Terrorism April 2014 Young, Joseph Journal Article
Making the Wrong Connection: The Determinants of Terrorist Targeting of Airplanes and Airports February 2010 Rethemeyer, R. Karl; Legault, Richard Conference Paper
Mapping and Deterring Violent Extremist Networks in North-West Africa April 2015 Leuprecht, Christian Journal Article
Mass Casualty Explosives Attacks in Iraq and Afghanistan June 2017 Miller, Erin; Distler, Michael Background Report
Mass-Fatality, Coordinated Attacks Worldwide, and Terrorism in France November 2015 Miller, Erin Background Report
Media Effects: Do Terrorist Organizations Launch Foreign Attacks in Response to Levels of Press Freedom or Press Attention? May 2015 Asal, Victor Journal Article
Migration, Culture Conflict, Crime and Terrorism November 2005 Freilich, Joshua Book
Mobilizing on the Extreme Right: Germany, Italy, and the United States January 2012 della Porta, Donatella; Caiani, Manuela Book
MOOC: Understanding Terrorism and the Terrorist Threat 2015 October 2014 Project Fact Sheet
New vs. Old Terrorism: A Critical Appraisal November 2007 Crenshaw, Martha Book Chapter
NGO Interventions: Influences on Terrorist Activity August 2016 Hodwitz, Omi Journal Article
Old and New Terrorism August 2009 Neumann, Peter Book
On Classifying Terrorism: A Potential Contribution of Cluster Analysis for Academics and Policymakers December 2007 Chenoweth, Erica Journal Article
Opening Yourself Up: The Role of External and Internal Transparency in Terrorism Attacks September 2014 Piazza, James A. Journal Article
Overview: Profiles of Individual Radicalization in the United States-Foreign Fighters (PIRUS-FF) April 2016 Tinsley, Herbert; Jensen, Michael; James, Patrick Research Brief
Overview: Terrorism in 2014 August 2015 Miller, Erin Background Report
Overview: Terrorism in 2016 August 2017 Miller, Erin Background Report
Pathways Toward Radicalization October 2008 McCauley, Clark Research Brief
Patterns of Collective Desistance from Terrorism: Fundamental Measurement Challenges October 2016 Miller, Erin Journal Article
Patterns of Intervention in Federal Terrorism Cases August 2011 Smith, Brent; Damphousse, Kelly START Reports
Patterns of Islamic State-Related Terrorism, 2002--2015 August 2016 Miller, Erin Background Report
Patterns of Lone Actor Terrorism in the United States: Research Brief October 2014 Smith, Brent; Gruenewald, Jeff; Roberts, Paxton Research Brief
Patterns of Onset and Decline Among Terrorist Organizations March 2012 Miller, Erin Journal Article
Patterns of Precursor Behaviors in the Life Span of a U.S. Environmental Terrorist Group November 2009 Smith, Brent; Damphousse, Kelly Journal Article
Patterns of Terrorism in the United States, 1970-2013 October 2014 Miller, Erin START Reports
Patterns of Terrorism in the United States, 1970-2014 May 2016 Miller, Erin START Reports
Political Mobilization and Institutions April 2015 Chenoweth, Erica Book Chapter
Poverty and Terrorism: A Hypothesis in Search of Evidence January 2009 Piazza, James A. Book Chapter
Poverty, Minority Economic Discrimination, and Domestic Terrorism March 2011 Piazza, James A. Journal Article
Prisons and Terrorism: Radicalisation and De-radicalisation in 15 Countries July 2010 Neumann, Peter Report
Profiles of Individual Radicalization in the United States-Foreign Fighters: Infographics October 2017 Jensen, Michael; James, Patrick Research Brief
Profiles of Perpetrators of Terrorism in the United States (PPT‐US): Data Collection and Descriptive Analysis September 2011 Miller, Erin; Smarick, Kathleen START Reports
Project Fact Sheet: Terrorism and Extremist Violence in the U.S. Database and Portal May 2014 LaFree, Gary; Braniff, William Project Fact Sheet
Putting Terrorism in Context: Lessons from the Global Terrorism Database (Contemporary Terrorism Studies) January 2015 Miller, Erin; LaFree, Gary; Dugan, Laura Book
Rage, Rage Against the Dying of the Slight March 2015 Ackerman, Gary Discussion Point
Recent U.S. Thinking about Terrorism and Counterterrorism: Babysteps towards a Dynamic View of Asymmetric Conflict September 2010 McCauley, Clark; Moskalenko, Sophia Journal Article
Regime Age and Terrorism: Are New Democracies Prone to Terrorism? January 2013 Piazza, James A. Journal Article
Regime Type and Terrorist Attacks May 2015 Chenoweth, Erica Book Chapter
Regime Types and Terrorism June 2017 Piazza, James A. Journal Article
Religion, Government Coalitions, and Terrorism February 2013 Birnir, Johanna; Satana, Nil Journal Article
Religious Fundamentalism among Young Muslims in Egypt and Saudi Arabia January 2008 Moaddel, Mansoor Journal Article
Repression and Terrorism: A Cross-National Empirical Analysis of Types of Repression and Domestic Terrorism February 2015 Piazza, James A. Journal Article
Research Highlight: Identifying the Characteristics of Communities Where Perpetrators Live and Pre-Incident Activity Occurs May 2013 Smith, Brent; Damphousse, Kelly; Fitzpatrick, Kevin; Roberts, Paxton Research Brief
Research Highlight: U.S. Attitudes toward Terrorism and Counterterrorism March 2013 Adamczyk, Amy; LaFree, Gary; Tourangeau, Roger; Presser, Stanley Research Brief
Research Highlight: Understanding Lone-actor Terrorism -- A Comparative Analysis with Violent Hate Crimes and Group-based Terrorism October 2013 Deloughery, Kathleen; King, Ryan; Asal, Victor Research Brief
Responding to Terrorism? Human Rights Organization Shaming and Terrorist Attacks September 2015 Deloughery, Kathleen; Asal, Victor Journal Article
Say Terrorist, Think Insurgent: Labeling and Analyzing Contemporary Terrorist Actors October 2014 Moghadam, Assaf Journal Article
Secure in their Beliefs: Personal Security, the Quest for Personal Significance, and the Psychology of Extremism April 2015 Kruglanski, Arie Book Chapter
Spatial Analysis of U.S. Terrorism Incidents November 2017 Smith, Brent Research Brief
Spatial Distribution of Minority Communities and Terrorism July 2016 Arva, Bryan; Piazza, James A. Journal Article
Springtime for Jihadis May 2011 Gallo, Alex Journal Article
START Annual Meeting 2016: Quick-Fire Presentation - Terrorism and Radicalization October 2016 Lemieux, Anthony; Koven, Barnett S.; Ackerman, Gary; LaFree, Gary; Ligon, Gina Scott; Horgan, John; Satana, Nil; James, Patrick; Simi, Peter; Breiger, Ronald; Chermak, Steven Presentation
State Capacity and Terrorism: A Two-Dimensional Approach May 2014 Young, Joseph Journal Article
Structural Differences of Violent Extremist Offenders in Correctional Settings June 2015 Leuprecht, Christian Journal Article
Sudden Desistance from Terrorism: The Armenian Secret Army for the Liberation of Armenia and the Justice Comandos of the Armenian Genocide November 2008 McCauley, Clark; LaFree, Gary; Dugan, Laura Journal Article
Suicide Terrorism April 2018 Moghadam, Assaf Book Chapter
Syria Barometer Survey: Opinions about War in Syria and about Radical Action June 2016 McCauley, Clark; Moskalenko, Sophia START Reports
Terrorism January 2009 Dugan, Laura Book Chapter
Terrorism and Democracy May 2013 Chenoweth, Erica Journal Article
Terrorism and Party Systems in the States of India February 2010 Piazza, James A. Journal Article
Terrorism and State Repression: Strategic Choice and the Domestic Normative Context June 2018 Foley, Frank Book Chapter
Terrorism and the Olympics July 2012 Miller, Erin Background Report
Terrorism and the Olympics: Sochi, Russia 2014 January 2014 Miller, Erin Background Report
Terrorism in Belgium and Western Europe; Attacks against Transportation Targets; Coordinated Terrorist Attacks March 2016 Miller, Erin Background Report
Terrorism in Mali November 2015 Miller, Erin Fact Sheet
Terrorism Research: Current Issues and Debates September 2017 Wilson, Margaret Book Chapter
Terrorism Research: The Record July 2014 Crenshaw, Martha Journal Article
Terrorism Studies: A Reader November 2010 Horgan, John Book
Terrorism Trends with a Focus on Energy and Mining June 2015 Pate, Amy Research Brief
Terrorist Attacks in the U.S. between 1970 and 2012: Data from the Global Terrorism Database (GTD) January 2014 Miller, Erin Research Brief
Terrorist Attacks in the U.S. between 1970 and 2013: Data from the Global Terrorism Database (GTD) November 2014 Miller, Erin Research Brief
Terrorist Attacks on Educational Institutions December 2014 Miller, Erin Background Report
Terrorist Attacks Show Biggest Decline in a Decade; But Let's Wait Before Celebrating June 2016 Miller, Erin; LaFree, Gary; Jensen, Michael Discussion Point
Terrorist Attacks Targeting Critical Infrastructure in the United States, 1970-2015 June 2016 Miller, Erin START Reports
Terrorist Group Cooperation and Longevity June 2014 Phillips, Brian Journal Article
Terrorist Group Survival as a Measure of Effectiveness June 2018 Phillips, Brian Book Chapter
Terrorist Hostage-taking April 2018 Wilson, Margaret Book Chapter
The Audacity of Hype: Why International Cooperation will Easily Defeat Piracy in Southeast Asia July 2015 Tippin, Garett; Stevenson, John Discussion Point
The Canadian Way of Counterterrorism: Introducing the GATE-Canada Data Set May 2016 Chenoweth, Erica; Dugan, Laura Journal Article
The Cost of Living and Terror: Does Consumer Price Volatility Fuel Terrorism? April 2013 Piazza, James A. Journal Article
The Curious Incident of the Bench in the Daylight April 2018 Quigley, Jillian; Binder, Markus; Earnhardt, Rebecca (Becca) Journal Article
The Curse of Cain: Why Fratricidal Jihadis Fail to Learn from Their Mistakes November 2017 Hafez, Mohammed Journal Article
The Debate over "New" vs. "Old" Terrorism August 2007 Crenshaw, Martha Conference Paper
The Determinants of Domestic Right-Wing Terrorism in the USA: Economic Grievance, Societal Change and Political Resentment March 2015 Piazza, James A. Journal Article
The Differential Risk of Retaliation by Relational Distance: A More General Model of Violent Victimization March 2005 Dugan, Laura Journal Article
The Dog that Doesn't Bark January 2013 Asal, Victor Discussion Point
The Economic Impact of Terrorist Incidents on the Italian Hospitality Industry January 2006 Journal Article
The Effectiveness of Counterterrorism in Spain: A New Approach February 2010 Chenoweth, Erica Conference Paper
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 Empirical Study of Terrorism: Social and Legal Research August 2009 Ackerman, Gary; LaFree, Gary Journal Article
The Geography of U.S. Terrorist Incidents, 1970-2004 July 2009 Cutter, Susan Journal Article
The Global Terrorism Database (GTD): Accomplishments and Challenges March 2010 LaFree, Gary Journal Article
The Global Terrorism Database, 1970–2010 January 2013 LaFree, Gary; Dugan, Laura Book Chapter
The Globalization of Martyrdom: Al Qaeda, Salafi Jihad, and the Diffusion of Suicide Attacks July 2008 Moghadam, Assaf Book
The Growing Importance of Criminology in the Study of Terrorism November 2007 LaFree, Gary Journal Article
The Handbook of the Criminology of Terrorism November 2016 LaFree, Gary; Freilich, Joshua Book
The Inadvertent Effects of Democracy on Terrorist Group Emergence April 2006 Chenoweth, Erica Conference Paper
The Influence of External and Internal Correlates on the Organizational Death of Domestic Far-Right Extremist Groups May 2015 Freilich, Joshua; Chermak, Steven Journal Article
The Intersection of Homicide, Terrorism, and Violent Extremism January 2018 LaFree, Gary; Gruenewald, Jeff Journal Article
The Opium Trade and Patterns of Terrorism in the Provinces of Afghanistan: An Empirical Analysis March 2012 Piazza, James A. Journal Article
The Organization of Terrorism November 2006 Crenshaw, Martha Book Chapter
The Oxford Handbook of Social Movements October 2015 della Porta, Donatella Book
The Paradox of Legitimacy: Resilience, Successes and the Multiple Identities of the Kurdistan Workers' Party in Turkey May 2015 Journal Article
The Paris Fidayin Attacks: Eight Years in the Making? October 2015 Tinsley, Herbert Discussion Point
The Reemergence of the Shining Path February 2010 Koven, Barnett S. Journal Article
The Social Psychological Makings of a Terrorist February 2018 Kruglanski, Arie Journal Article
The State of Al-Qaeda its Affiliates, and Associated Groups: Views from Outside Experts February 2014 Braniff, William Congressional Testimony
The Strategic Logic of Terrorism June 2017 Crenshaw, Martha Book Chapter
The Strategy of Terrorism: How it Works, and Why it Fails (Contemporary Terrorism Studies) September 2008 Neumann, Peter Book
The Strategy of Terrorism: The Framework and Its Fallacies January 2007 Neumann, Peter Journal Article
The True Meaning of Terrorism and Response to Terrorism November 2017 Zhuang, Jun Journal Article
To Bribe or to Bomb: Do Corruption and Terrorism Go Together? October 2009 Chenoweth, Erica Book Chapter
Tracking Global Terrorism, 1970-2004 November 2008 LaFree, Gary; Dugan, Laura Book Chapter
Trajectories of Terrorism: An Analysis of Major Groups that have Targeted the United States, 1970 to 2004 January 2008 LaFree, Gary; Crenshaw, Martha; Yang, Sue-Ming Journal Article
Transnational Jihadism & Civil Wars September 2017 Crenshaw, Martha Journal Article
Trends in Global Terrorism, 1970-2007 November 2008 Book Chapter
Twenty-First Century Jihad: Law, Society and Military Action April 2015 Book
Types of Minority Discrimination and Terrorism November 2012 Piazza, James A. Journal Article
U.S. Attitudes toward Terrorism and Counterterrorism: Research Highlight October 2014 Adamczyk, Amy; LaFree, Gary; Tourangeau, Roger; Presser, Stanley Research Brief
Under What Conditions Does Ethnic Conflict Result in Armed Violence? January 2017 McCauley, Clark Book Chapter
Understanding Al-Qa’ida’s Business Model January 2011 Gallo, Alex Journal Article
Understanding Lone-actor Terrorism: A Comparative Analysis with Violent Hate Crimes and Group-based Terrorism September 2013 Deloughery, Kathleen; King, Ryan D.; Asal, Victor START Reports
Understanding Terrorism and Counter-Terrorism November 2017 Singh, Rashmi Book
Update on Geospatial Patterns of Antecedent Behavior among Perpetrators in the American Terrorism Study (ATS) October 2013 Smith, Brent; Damphousse, Kelly; Roberts, Paxton START Reports
Update on Geospatial Patterns of Precurrsor Behavior among Terrorists October 2012 Smith, Brent; Damphousse, Kelly; Roberts, Paxton START Reports
Urban Centers Exhibit Differential Vulnerability to Terrorism April 2008 Cutter, Susan Journal Article
Use of Firearms in Terrorist Attacks in the United States 1970-2014 July 2015 Miller, Erin Background Report
Using open source data to track worldwide terrorism patterns July 2017 LaFree, Gary Book Chapter
Veto Players and Terror November 2010 Young, Joseph; Dugan, Laura Book Review
Walking Away from Terrorism: Accounts of Disengagement from Radical and Extremist Movements November 2008 Horgan, John Book
Western Muslims Volunteering to fight in Syria and Iraq: Why do they go, and what should we do? July 2015 McCauley, Clark; Moskalenko, Sophia Journal Article
What Are the Social, Economic, Psychological and Environmental Risk Factors That Lead to Radicalization and Recruitment to Terrorism? September 2017 Weisburd, David Report
What is the State of Islamic Extremism: Key Trends, Challenges and Implications for U.S. Policy February 2015 Braniff, William Congressional Testimony
What Makes Terrorist Tick June 2009 Chenoweth, Erica Journal Article
When Terrorism Works: Explaining Success and Failure Across Varying Targets and Objectives June 2018 Krause, Peter Book Chapter
When Terrorists Go Bad: Analyzing Terrorist Organizations' Involvement in Drug Smuggling November 2014 Milward, H. Brinton; Asal, Victor Journal Article
When terrorists target schools: An exploratory analysis of attacks on educational institutions June 2013 Wilson, Margaret Journal Article
Why the United States is Targeted by Terrorism October 2010 Crenshaw, Martha Conference Paper
With Friends Like These…Why Terrorist Organizations Ally January 2016 Ackerman, Gary; Rethemeyer, R. Karl; Asal, Victor Journal Article
Yes, no and maybe in the world of terrorism research: Reflections on the commentaries January 2009 Kruglanski, Arie; Fishman, Shira Journal Article
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START launches Terrorism 360 podcast
Terrorist violence decreases worldwide in 2017, but remains historically high
Tricia Bacon discusses the history and future of alliances in the global terrorism community
Proportion of terrorist attacks by religious and right-wing extremists on the rise in United States
Terrorist attack deaths increase in Iraq, the West, despite decrease worldwide
START launches new training course on understanding and preventing radicalization to violence and violent extremism
Center of Excellence collaboration examines critical infrastructure
More plot participants, greater rate of attack success
New study examines FARC’s development of narco-submarines
Designing Danger: Complex Engineering by Violent Non-State Actors
Intern team authors peer-reviewed journal article on Hamas
Terrorism in Belgium and Western Europe; Attacks against Transportation Targets; Coordinated Terrorist Attacks
START launches online course on terror-crime nexus and CBRN
Fact Sheet: American Deaths in Terrorist Attacks
Terrorist attacks involving firearms more likely to be lethal than other types of attacks
Research Brief: Terrorism Trends with a Focus on Energy and Mining
2014 GTD data available now
Patterns of Lone Actor Terrorism in the U.S.
New project explores the relationship between belief and action of terrorist groups
Majority of 2013 terrorist attacks occurred in just a few countries
New brief analyzes terrorist groups in the United States
START launches infographic series with War on the Rocks
The evolution of the Islamic State of Iraq and the Levant (ISIL)
Research improves understanding of geographic clustering of terrorist attacks
START provides 2013 statistical annex for Country Reports on Terrorism
Discussion Point: Why isn't anyone calling this terrorism, still?
START executive director to testify before Congress on the state of al-Qaida
Terrorism and the Olympics: Sochi, Russia 2014
A closer look at the 2,600 terrorist attacks in US, 1970-2012
Preliminary findings on Profiles of Individual Radicalization in the US
Despite fewer attacks in Western world, global terrorism increasing
START Newsletter: Global terrorism increasing; GTD 2012 dataset released; New cyber research
FTO Designation: Boko Haram and Ansaru
White Paper: Perspectives on Terrorism and Responses to It
START seeking 2014 Outstanding Article Award nominations
START Newsletter: Violent hate crimes and lone-actor terrorism; Cultural values and terrorism; Al-Shabaab
START to offer Massive Open Online Course
Corn Husker contributes to START internship program with State Department
New study examines terrorism in Indonesia, the Philippines and Thailand
White Paper: A Multi-Layer Assessment of Terrorism in its Current and Future Manifestation
Lone-actors fueled by grievance, personal crises, weapons use
START study assesses attacks by environmental and animal rights extremists
START provides statistical annex for Country Reports on Terrorism
New START study examines communities where terrorists lived, planned and prepared
Researcher Spotlight: Erik Dahl
Assessing the likelihood of Hate Crime in wake of Boston Attacks
Research Highlight: Al-Qa'ida-Related Terrorism - Violent Incidents and Foiled Plots
New report examines relationship between county characteristics and incidents of terrorism
START researchers present work on transnational criminal organizations, terrorism and radiological/nuclear (RN) smuggling
START researcher explores how terrorism affects democracy, compares Turkey and US
Database Spotlight: Update on Profiles of Perpetrators of Terrorism in the US
Trends in terrorism in the U.S.: New report analyzes terrorist attack data 1970-2011
Border Crossings and Terrorist Attacks in the US
Discussion Point: Black Swans and Burstiness—Countering Myths about Terrorism
Study shows hate crimes more likely to occur after terrorist attacks
Database Spotlight: Police Response to Terrorism - Lessons from the Israeli Police
First-of-its-kind index ranks countries for impact of terrorism
Research Roundtable details the patterns of terrorism worldwide
State Department contracts START to provide terrorism data and analysis
START director addresses common myths of terrorism
New data reveals al-Qaida-linked groups among most active terrorist groups in the world
Discussion Point: The End of Radicalization?
John Cohen's keynote address at START Annual Meeting
START director to lecture on contrasting nature of terrorism
Black Swans and Burstiness: Oct. 4 Lecture
Policing Terrorism
Terrorism Studies Minor information sessions
Far-right Violence in the United States: 1990-2010
Olympics and Terrorism
Response to mischaracterization of the Hot Spots Report
START research examines history of terrorism and the Olympic Games
Student researches ties between terrorism and the Olympics
Database spotlight: Big Allied and Dangerous (BAAD)
Database spotlight: Profiles of Perpetrators of Terrorism in the United States (PPT-US)
Al-Qaida's fatal terrorism under Osama bin Laden
Earn a graduate certificate through START
Top-ranked criminology journal features START research
START researcher to publish book on suicide bombings
Terrorism studies minor now accepting applications
Urban U.S. counties hot spots of terror, but rural areas are not exempt
Terrorism studies graduate certificate application deadline is quickly approaching
START researcher invited to discuss terrorists' motivations
DHS renews support for START terrorism research for next five years
Violent extremism in the U.S.
START Investigators Present Research at National Conference
LaFree Discusses Terrorism Myths and Realities
Fahey discusses political instability, state capacity and terrorism
START Researchers Participate in Session on Psychology of Terrorism
START Investigators Participate in 2011 American Sociological Association Annual Conference
START Director Gary LaFree Comments on Terrorism Research Before and After 9/11
New START Project to Focus on Extremist Violence in U.S. Counties
START Response to Death of bin Laden
Summer Course Offerings
2011-2012 Background Report Undergraduate Terrorism Analysis Training (UTAT) Program Application Deadline Extended
***Background Info: Moscow Subway Bombing***
Now Hiring: Faculty Researcher/Post-Doc
***Background on Terrorism and Public Opinion in Indonesia***
Applications Now Being Accepted from UMaryland Undergraduates for Terrorism Studies Minor Program
START's Clark McCauley to Serve as Editor of New Journal on Asymmetric Conflict
"Peace and Conflict" Features Research from START Investigators
START Releases Report on Public Opinion in Muslim Countries
Summer Opportunities for Undergrads at UMD
START Announces 2007-08 Fellowship Awards
START Visiting Fellow featured in NYTimes Magazine
START Announces Fellowships for 2005-06
Image Title Job Title Institution
Photo of Barnett Koven Barnett S. Koven

Senior Researcher, START

Affiliated Scholar, The Jack D. Gordon Institute for Public Policy at Florida International University

University of Maryland
Benjamin Evans

Faculty Research Assistant, Global Terrorism Database, START

University of Maryland
Bidisha Biswas

Professor

Western Washington University
Brandon Behlendorf Brandon Behlendorf

Assistant Professor, College of Emergency Preparedness, Homeland Security and Cybersecurity, SUNY Albany

University at Albany, State University of New York
Brian Phillips Brian Phillips

Assistant Professor

Center for Research and Teaching in Economics (CIDE), Mexico City
Christian Leuprecht

Professor

Royal Military College
Daniella Fridl Daniella Fridl

Former Assistant Research Director, START

University of Maryland
Devin Ellis

Policy & Research Program Director, ICONS Project

University of Maryland
Emmanuel Karagiannis Emmanuel Karagiannis

Senior Lecturer of International Relations

King's College
Erica Chenoweth Erica Chenoweth

Associate Professor of International Studies

University of Denver
Erin MIller Erin Miller

GTD Program Manager, START

University of Maryland
Gary Ackerman Gary Ackerman

Associate Professor, SUNY Albany

University at Albany, State University of New York
Hamid Mohtadi

Professor of Economics

University of Wisconsin - Milwaukee
Jacob Loewner

Graduate Research Assistant, START

University of Maryland
James Halverson

Researcher, START

University of Maryland
Jeff Gruenewald

Associate Professor

Indiana University - Purdue University Indianapolis
Jeffrey Bale

Director of Monterey Terrorism Research and Education Program / Associate Professor of International Policy Studies

Monterey Institute of International Studies
Jeremy Backstrom

Assistant Professor, Department of Political Science and International Relations

Widener University
Joseph Oudin

Senior Faculty Specialist, Global Terrorism Database, START

University of Maryland
Joseph Young Joseph Young

Associate Professor of Public Affairs

American University
Kelly Damphousse Kelly Damphousse

Dean of the College of Arts and Science

University of Oklahoma
Kieran Quinlan

Data Scientist & Senior Consultant, Booz Allen Hamilton

None
Laura Dugan Laura Dugan

Professor of Criminology and Criminal Justice

University of Maryland
Lyubov Mincheva

Executive Director, Graduate Program in International Relations and Security Studies

University of Sofia, Bulgaria
Marcus A. Boyd

Senior Researcher, GIS, START

University of Maryland
Michael Distler

Senior Researcher, START

University of Maryland
Michael Jensen

Senior Researcher, START

University of Maryland
Michelle Jacome Michelle Jacome

Operations Officer, World Bank

None
Mila Jonns Mila Johns

Researcher

None
Nil Satana

Visiting Associate Professor

University of Maryland
Obie Clayton

Researcher of Sociology

Morehouse College
Omi Hodwitz

Assistant Professor

University of Idaho
START Researcher Patrick James Patrick James

Project Manager/Researcher, START

University of Maryland
Roberta Belli

Security Information Analyst, United Nations Department of Safety and Security

United Nations Department of Safety and Security (UNDSS)
Ronald Breiger Ronald Breiger

Professor of Sociology

University of Arizona
Salma Bouziani

Project Manager/Researcher, START

University of Maryland
Sue-Ming Yang Sue-Ming Yang

Associate Professor, Department of Criminology, Law and Society

George Mason University
Victor Asal

Associate Professor of Political Science and Chair of Public Administration

University at Albany, State University of New York
Will Kammerer William Kammerer

Senior Faculty Specialist, START

University of Maryland
Image Abbreviation Title Direct Link
GTD Global Terrorism Database (GTD)
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