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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Political Science 42 430 386 240 205 134 9666

John Horgan publications per year

The chart shows the history of publications by John Horgan between 1968 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. John Horgan published across 58 years, from 1968 to 2025, averaging 4.5 papers a year. Output peaked at 16 publications in 1993. 4 of the 260 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 1968 to 2025. Vertical axis: number of publications, 0 to 16. Peak 16 publications in 1993. 1968: 1 publication 1969: 0 publications 1970: 0 publications 1971: 0 publications 1972: 0 publications 1973: 0 publications 1974: 0 publications 1975: 0 publications 1976: 0 publications 1977: 0 publications 1978: 0 publications 1979: 0 publications 1980: 0 publications 1981: 0 publications 1982: 0 publications 1983: 0 publications 1984: 0 publications 1985: 0 publications 1986: 1 publication 1987: 4 publications 1988: 7 publications 1989: 8 publications 1990: 10 publications 1991: 9 publications 1992: 11 publications 1993: 16 publications 1994: 15 publications 1995: 13 publications 1996: 8 publications 1997: 9 publications 1998: 0 publications 1999: 2 publications 2000: 0 publications 2001: 3 publications 2002: 1 publication 2003: 5 publications 2004: 3 publications 2005: 4 publications 2006: 2 publications 2007: 2 publications 2008: 9 publications 2009: 11 publications 2010: 8 publications 2011: 4 publications 2012: 8 publications 2013: 13 publications 2014: 9 publications 2015: 6 publications 2016: 11 publications 2017: 12 publications 2018: 5 publications 2019: 6 publications 2020: 8 publications 2021: 9 publications 2022: 3 publications 2023: 0 publications 2024: 2 publications 2025: 2 publications
1968 2025

260 publications in total across all disciplines

View publications per year as a table
John Horgan: publications per year, 1968 to 2025
Year Publications
1968 1
1969 0
1970 0
1971 0
1972 0
1973 0
1974 0
1975 0
1976 0
1977 0
1978 0
1979 0
1980 0
1981 0
1982 0
1983 0
1984 0
1985 0
1986 1
1987 4
1988 7
1989 8
1990 10
1991 9
1992 11
1993 16
1994 15
1995 13
1996 8
1997 9
1998 0
1999 2
2000 0
2001 3
2002 1
2003 5
2004 3
2005 4
2006 2
2007 2
2008 9
2009 11
2010 8
2011 4
2012 8
2013 13
2014 9
2015 6
2016 11
2017 12
2018 5
2019 6
2020 8
2021 9
2022 3
2023 0
2024 2
2025 2
Total 260
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John Horgan publication distribution in Political Science in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Political Science in 2026. The highlighted bar marks where John Horgan sits on this spectrum.

No. of scientists
20 40 60 80
Bar chart with 61 bars. Horizontal axis: publications, 36–40 to 333+. Vertical axis: number of scientists, 0 to 97. Most scientists, 97, have 333+ publications. The last bar groups every scientist with 333 publications or more. The highlighted bar, 131–135 publications, is where this scientist sits. 36–40 publications: 10 scientists 41–45 publications: 11 scientists 46–50 publications: 25 scientists 51–55 publications: 27 scientists 56–60 publications: 44 scientists 61–65 publications: 52 scientists 66–70 publications: 62 scientists 71–75 publications: 62 scientists 76–80 publications: 79 scientists 81–85 publications: 71 scientists 86–90 publications: 82 scientists 91–95 publications: 65 scientists 96–100 publications: 85 scientists 101–105 publications: 76 scientists 106–110 publications: 66 scientists 111–115 publications: 78 scientists 116–120 publications: 67 scientists 121–125 publications: 73 scientists 126–130 publications: 73 scientists 131–135 publications: 64 scientists 136–140 publications: 45 scientists 141–145 publications: 53 scientists 146–150 publications: 44 scientists 151–155 publications: 45 scientists 156–160 publications: 33 scientists 161–165 publications: 32 scientists 166–170 publications: 28 scientists 171–175 publications: 31 scientists 176–180 publications: 29 scientists 181–185 publications: 27 scientists 186–190 publications: 36 scientists 191–195 publications: 27 scientists 196–200 publications: 24 scientists 201–205 publications: 16 scientists 206–210 publications: 16 scientists 211–215 publications: 19 scientists 216–220 publications: 16 scientists 221–225 publications: 17 scientists 226–230 publications: 18 scientists 231–235 publications: 23 scientists 236–240 publications: 17 scientists 241–245 publications: 13 scientists 246–250 publications: 17 scientists 251–255 publications: 9 scientists 256–260 publications: 13 scientists 261–265 publications: 8 scientists 266–270 publications: 12 scientists 271–275 publications: 8 scientists 276–280 publications: 10 scientists 281–285 publications: 13 scientists 286–290 publications: 13 scientists 291–295 publications: 5 scientists 296–300 publications: 6 scientists 301–305 publications: 11 scientists 306–310 publications: 9 scientists 311–315 publications: 6 scientists 316–320 publications: 4 scientists 321–325 publications: 4 scientists 326–330 publications: 2 scientists 331–332 publications: 5 scientists 333+ publications: 97 scientists
36–40 publications 333+

This scientist: 134 publications — 57th percentile

57% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 333 publications or more.

View publications distribution as a table
Number of Political Science scientists by publication count, Research.com 2026 ranking edition. Based on 2,033 ranked scientists.
Publications Scientists This scientist
36–40 10
41–45 11
46–50 25
51–55 27
56–60 44
61–65 52
66–70 62
71–75 62
76–80 79
81–85 71
86–90 82
91–95 65
96–100 85
101–105 76
106–110 66
111–115 78
116–120 67
121–125 73
126–130 73
131–135 64 134
136–140 45
141–145 53
146–150 44
151–155 45
156–160 33
161–165 32
166–170 28
171–175 31
176–180 29
181–185 27
186–190 36
191–195 27
196–200 24
201–205 16
206–210 16
211–215 19
216–220 16
221–225 17
226–230 18
231–235 23
236–240 17
241–245 13
246–250 17
251–255 9
256–260 13
261–265 8
266–270 12
271–275 8
276–280 10
281–285 13
286–290 13
291–295 5
296–300 6
301–305 11
306–310 9
311–315 6
316–320 4
321–325 4
326–330 2
331–332 5
333+ 97
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John Horgan D-index placement in Political Science in 2026

The chart shows the D-index (discipline H-index) distribution of Political Science scientists ranked by Research.com in 2026. The highlighted bar marks where John Horgan sits on this spectrum.

No. of scientists
25 50 75 100
Bar chart with 43 bars. Horizontal axis: D-Index, 20 to 62+. Vertical axis: number of scientists, 0 to 100. Most scientists, 100, have 62+ D-Index. The last bar groups every scientist with 62 D-Index or more. The highlighted bar, 42 D-Index, is where this scientist sits. 20 D-Index: 76 scientists 21 D-Index: 79 scientists 22 D-Index: 84 scientists 23 D-Index: 68 scientists 24 D-Index: 88 scientists 25 D-Index: 82 scientists 26 D-Index: 76 scientists 27 D-Index: 75 scientists 28 D-Index: 99 scientists 29 D-Index: 96 scientists 30 D-Index: 96 scientists 31 D-Index: 81 scientists 32 D-Index: 86 scientists 33 D-Index: 81 scientists 34 D-Index: 84 scientists 35 D-Index: 72 scientists 36 D-Index: 58 scientists 37 D-Index: 53 scientists 38 D-Index: 48 scientists 39 D-Index: 40 scientists 40 D-Index: 40 scientists 41 D-Index: 32 scientists 42 D-Index: 26 scientists 43 D-Index: 25 scientists 44 D-Index: 33 scientists 45 D-Index: 33 scientists 46 D-Index: 17 scientists 47 D-Index: 21 scientists 48 D-Index: 22 scientists 49 D-Index: 18 scientists 50 D-Index: 19 scientists 51 D-Index: 19 scientists 52 D-Index: 15 scientists 53 D-Index: 14 scientists 54 D-Index: 10 scientists 55 D-Index: 13 scientists 56 D-Index: 9 scientists 57 D-Index: 11 scientists 58 D-Index: 12 scientists 59 D-Index: 10 scientists 60 D-Index: 5 scientists 61 D-Index: 7 scientists 62+ D-Index: 100 scientists
20 D-Index 62+

This scientist: 42 D-Index — 80th percentile

80% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 62 D-Index or more.

View D-Index distribution as a table
Number of Political Science scientists by D-index, Research.com 2026 ranking edition. Based on 2,033 ranked scientists.
D-Index Scientists This scientist
20 76
21 79
22 84
23 68
24 88
25 82
26 76
27 75
28 99
29 96
30 96
31 81
32 86
33 81
34 84
35 72
36 58
37 53
38 48
39 40
40 40
41 32
42 26 42
43 25
44 33
45 33
46 17
47 21
48 22
49 18
50 19
51 19
52 15
53 14
54 10
55 13
56 9
57 11
58 12
59 10
60 5
61 7
62+ 100
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Overview

John Horgan is affiliated with Georgia State University in the United States. Their research primarily spans the social sciences, with a focus on sociology, political science, and health-related topics. Their work encompasses various subfields, including sociology and political science, social psychology, political science and international relations, and artificial intelligence.

Their main research topics involve a detailed examination of terrorism, counterterrorism, and political violence. They have also explored areas related to gun ownership and violence research, religion and spirituality within psychological and societal contexts, bullying and aggression, political conflict and governance, as well as crime patterns and interventions.

Research publications by John Horgan include:

  • Picking Up and Defending the Faith: Activism and Radicalism Among Muslim Converts in the United States (2020, Political Psychology)
  • Disaggregating Lone-actor Grievance-fuelled Violence: Comparing Lone-actor Terrorists and Mass Murderers (2020, Terrorism and Political Violence)
  • Terrorist Transformations: The Link between Terrorist Roles and Terrorist Disengagement (2020, Studies in Conflict and Terrorism)
  • Similar crimes, similar behaviors? Comparing lone-actor terrorists and public mass murderers (2021, Journal of Forensic Sciences)
  • Impact of Perceived Peer Attitudes and Social Network Diversity on Violent Extremist Intentions (2020, Terrorism and Political Violence)

Their frequent coauthors include Daniel W. Snook, Ari Fodeman, Paul Gill, Noemié Bouhana, and James Silver.

John Horgan's research has been published predominantly in the journal Terrorism and Political Violence, followed by contributions to Behavioral Sciences of Terrorism and Political Aggression, Journal of School Psychology, Political Psychology, and Review of General Psychology.

Best Publications

  • The Psychology of Terrorism

    John G. Horgan

  • Walking Away from Terrorism: Accounts of Disengagement from Radical and Extremist Movements

    John G. Horgan

  • Leaving Terrorism Behind: Individual and Collective Disengagement

    Tore Bjorgo;John G. Horgan

  • Bombing Alone: Tracing the Motivations and Antecedent Behaviors of Lone-Actor Terrorists,,

    Paul Gill;John Horgan;A.B.D. Paige Deckert M.S.

  • Rehabilitating the Terrorists?: Challenges in Assessing the Effectiveness of De-radicalization Programs

    John Horgan;Kurt Braddock

  • A Conceptual Framework for Addressing Psychological Process in the Development of the Terrorist

    Max Taylor;John Horgan

  • The search for the terrorist personality.

    John Horgan

  • Towards a Guide for Constructing and Disseminating Counternarratives to Reduce Support for Terrorism

    Kurt Braddock;John Horgan

  • Turning away from terrorism Lessons from psychology, sociology, and criminology

    Mary Beth Altier;Christian N Thoroughgood;John G Horgan

  • Terrorist Use of the Internet by the Numbers: Quantifying Behaviors, Patterns and Processes

    Paul Gill;Emily Corner;Maura Conway;Amy Thornton

  • Playing the ‘Green Card’ – Financing the Provisional IRA: Part 1

    John Horgan;Max Taylor

  • The provisional Irish republican army: Command and functional structure

    John Horgan;Max. Taylor

  • Malevolent Creativity in Terrorist Organizations

    Paul Gill;John Horgan;Samuel T. Hunter;Lily D. Cushenbery

  • Individual Disengagement: A Psychological Analysis

    John Horgan

  • Deradicalization or disengagement? A process in need of clarity and a counterterrorism initiative in need of evaluation

    John Horgan

  • From Cubs to Lions: A Six Stage Model of Child Socialization into the Islamic State

    John G. Horgan;Max Taylor;Mia Bloom;Charlie Winter

  • A case against ‘Critical Terrorism Studies’

    John Horgan;Michael J. Boyle

  • Why They Leave: An Analysis of Terrorist Disengagement Events from Eighty-seven Autobiographical Accounts

    Mary Beth Altier;Emma Leonard Boyle;Neil D. Shortland;John G. Horgan

  • The Psychological and Behavioural Bases of Islamic Fundamentalism

    M. Taylor;J. Horgan

  • Interviewing the terrorists: reflections on fieldwork and implications for psychological research

    John Horgan

  • Who Were the Volunteers? 1 The Shifting Sociological and Operational Profile of 1240 Provisional Irish Republican Army Members

    Paul Gill;John Horgan

  • Walking away: the disengagement and de-radicalization of a violent right-wing extremist

    John Horgan;Mary Beth Altier;Neil Shortland;Max Taylor

  • The critical role of friends in networks for countering violent extremism: toward a theory of vicarious help-seeking

    Michael J. Williams;John G. Horgan;William P. Evans

  • Navigating ISIS’s Preferred Platform: Telegram1

    Mia Bloom;Hicham Tiflati;John Horgan

  • Rationales for terrorist violence in homegrown jihadist groups: A case study from the Netherlands

    Bart Schuurman;John G. Horgan

  • Relation of psychosocial factors to diverse behaviors and attitudes among Somali refugees.

    B. Heidi Ellis;Saida M. Abdi;Vanja Lazarevic;Matthew T. White

  • The Attitudes-Behaviors Corrective (ABC) Model of Violent Extremism

    James Khalil;John Horgan;Martine Zeuthen

  • In Their Own Words? Methodological Considerations in the Analysis of Terrorist Autobiographies

    Mary Beth Altier;John Horgan;Christian Thoroughgood

  • Risk assessment and the terrorist

    Karl Roberts;John Horgan

  • Psychology of terrorism: Introduction to the special issue.

    John G. Horgan

  • Trauma and Openness to Legal and Illegal Activism Among Somali Refugees

    B. Heidi Ellis;Saida M. Abdi;John G. Horgan;Alisa B. Miller

Frequent Co-Authors

Paul Gill
Paul Gill University College London
Mia Bloom
Mia Bloom Georgia State University
Jocelyn J. Bélanger
Jocelyn J. Bélanger New York University
Kathleen M. Carley
Kathleen M. Carley Carnegie Mellon University
Maura Conway
Maura Conway Dublin City University
James A. Piazza
James A. Piazza Pennsylvania State University
Daniel S. Messinger
Daniel S. Messinger University of Miami
Victor Asal
Victor Asal University at Albany, State University of New York
William H. Fisher
William H. Fisher University of Massachusetts Lowell
Myriam Denov
Myriam Denov McGill University

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