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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Social Sciences and Humanities 40 5255 4875 21 20 124 9009

Ian Kelleher publications per year

The chart shows the history of publications by Ian Kelleher between 2007 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Ian Kelleher published across 19 years, from 2007 to 2025, averaging 8.5 papers a year. Output peaked at 22 publications in 2025. 31 of the 162 publications appeared in the last two years.

No. of publications
5 10 15 20
Bar chart. Horizontal axis: year, 2007 to 2025. Vertical axis: number of publications, 0 to 22. Peak 22 publications in 2025. 2007: 1 publication 2008: 3 publications 2009: 2 publications 2010: 9 publications 2011: 5 publications 2012: 12 publications 2013: 9 publications 2014: 12 publications 2015: 6 publications 2016: 5 publications 2017: 8 publications 2018: 11 publications 2019: 7 publications 2020: 8 publications 2021: 9 publications 2022: 15 publications 2023: 9 publications 2024: 9 publications 2025: 22 publications
2007 2025

162 publications in total across all disciplines

View publications per year as a table
Ian Kelleher: publications per year, 2007 to 2025
Year Publications
2007 1
2008 3
2009 2
2010 9
2011 5
2012 12
2013 9
2014 12
2015 6
2016 5
2017 8
2018 11
2019 7
2020 8
2021 9
2022 15
2023 9
2024 9
2025 22
Total 162
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Ian Kelleher publication distribution in Social Sciences and Humanities in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Social Sciences and Humanities in 2026. The highlighted bar marks where Ian Kelleher sits on this spectrum.

No. of scientists
100 200 300 400
Bar chart with 54 bars. Horizontal axis: publications, 44–53 to 570+. Vertical axis: number of scientists, 0 to 474. Most scientists, 474, have 114–123 publications. The last bar groups every scientist with 570 publications or more. The highlighted bar, 124–133 publications, is where this scientist sits. 44–53 publications: 28 scientists 54–63 publications: 61 scientists 64–73 publications: 161 scientists 74–83 publications: 225 scientists 84–93 publications: 301 scientists 94–103 publications: 390 scientists 104–113 publications: 406 scientists 114–123 publications: 474 scientists 124–133 publications: 453 scientists 134–143 publications: 434 scientists 144–153 publications: 407 scientists 154–163 publications: 411 scientists 164–173 publications: 391 scientists 174–183 publications: 313 scientists 184–193 publications: 319 scientists 194–203 publications: 304 scientists 204–213 publications: 285 scientists 214–223 publications: 246 scientists 224–233 publications: 213 scientists 234–243 publications: 170 scientists 244–253 publications: 167 scientists 254–263 publications: 162 scientists 264–273 publications: 138 scientists 274–283 publications: 138 scientists 284–293 publications: 113 scientists 294–303 publications: 106 scientists 304–313 publications: 95 scientists 314–323 publications: 101 scientists 324–333 publications: 81 scientists 334–343 publications: 69 scientists 344–353 publications: 56 scientists 354–363 publications: 36 scientists 364–373 publications: 42 scientists 374–383 publications: 41 scientists 384–393 publications: 44 scientists 394–403 publications: 27 scientists 404–413 publications: 30 scientists 414–423 publications: 20 scientists 424–433 publications: 29 scientists 434–443 publications: 29 scientists 444–453 publications: 25 scientists 454–463 publications: 19 scientists 464–473 publications: 21 scientists 474–483 publications: 11 scientists 484–493 publications: 17 scientists 494–503 publications: 7 scientists 504–513 publications: 6 scientists 514–523 publications: 12 scientists 524–533 publications: 10 scientists 534–543 publications: 7 scientists 544–553 publications: 6 scientists 554–563 publications: 12 scientists 564–569 publications: 8 scientists 570+ publications: 100 scientists
44–53 publications 570+

This scientist: 124 publications — 27th percentile

27% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 570 publications or more.

View publications distribution as a table
Number of Social Sciences and Humanities scientists by publication count, Research.com 2026 ranking edition. Based on 7,777 ranked scientists.
Publications Scientists This scientist
44–53 28
54–63 61
64–73 161
74–83 225
84–93 301
94–103 390
104–113 406
114–123 474
124–133 453 124
134–143 434
144–153 407
154–163 411
164–173 391
174–183 313
184–193 319
194–203 304
204–213 285
214–223 246
224–233 213
234–243 170
244–253 167
254–263 162
264–273 138
274–283 138
284–293 113
294–303 106
304–313 95
314–323 101
324–333 81
334–343 69
344–353 56
354–363 36
364–373 42
374–383 41
384–393 44
394–403 27
404–413 30
414–423 20
424–433 29
434–443 29
444–453 25
454–463 19
464–473 21
474–483 11
484–493 17
494–503 7
504–513 6
514–523 12
524–533 10
534–543 7
544–553 6
554–563 12
564–569 8
570+ 100
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Ian Kelleher D-index placement in Social Sciences and Humanities in 2026

The chart shows the D-index (discipline H-index) distribution of Social Sciences and Humanities scientists ranked by Research.com in 2026. The highlighted bar marks where Ian Kelleher sits on this spectrum.

No. of scientists
100 200 300
Bar chart with 71 bars. Horizontal axis: D-Index, 30 to 100+. Vertical axis: number of scientists, 0 to 313. Most scientists, 313, have 42 D-Index. The last bar groups every scientist with 100 D-Index or more. The highlighted bar, 40 D-Index, is where this scientist sits. 30 D-Index: 177 scientists 31 D-Index: 210 scientists 32 D-Index: 222 scientists 33 D-Index: 188 scientists 34 D-Index: 181 scientists 35 D-Index: 243 scientists 36 D-Index: 261 scientists 37 D-Index: 272 scientists 38 D-Index: 278 scientists 39 D-Index: 300 scientists 40 D-Index: 297 scientists 41 D-Index: 308 scientists 42 D-Index: 313 scientists 43 D-Index: 300 scientists 44 D-Index: 269 scientists 45 D-Index: 260 scientists 46 D-Index: 228 scientists 47 D-Index: 251 scientists 48 D-Index: 203 scientists 49 D-Index: 186 scientists 50 D-Index: 187 scientists 51 D-Index: 166 scientists 52 D-Index: 138 scientists 53 D-Index: 141 scientists 54 D-Index: 131 scientists 55 D-Index: 137 scientists 56 D-Index: 109 scientists 57 D-Index: 129 scientists 58 D-Index: 95 scientists 59 D-Index: 105 scientists 60 D-Index: 106 scientists 61 D-Index: 86 scientists 62 D-Index: 94 scientists 63 D-Index: 77 scientists 64 D-Index: 79 scientists 65 D-Index: 59 scientists 66 D-Index: 68 scientists 67 D-Index: 51 scientists 68 D-Index: 49 scientists 69 D-Index: 40 scientists 70 D-Index: 43 scientists 71 D-Index: 40 scientists 72 D-Index: 50 scientists 73 D-Index: 46 scientists 74 D-Index: 43 scientists 75 D-Index: 45 scientists 76 D-Index: 45 scientists 77 D-Index: 30 scientists 78 D-Index: 25 scientists 79 D-Index: 31 scientists 80 D-Index: 29 scientists 81 D-Index: 18 scientists 82 D-Index: 21 scientists 83 D-Index: 26 scientists 84 D-Index: 15 scientists 85 D-Index: 15 scientists 86 D-Index: 19 scientists 87 D-Index: 19 scientists 88 D-Index: 12 scientists 89 D-Index: 7 scientists 90 D-Index: 19 scientists 91 D-Index: 20 scientists 92 D-Index: 13 scientists 93 D-Index: 9 scientists 94 D-Index: 13 scientists 95 D-Index: 8 scientists 96 D-Index: 7 scientists 97 D-Index: 6 scientists 98 D-Index: 6 scientists 99 D-Index: 6 scientists 100+ D-Index: 97 scientists
30 D-Index 100+

This scientist: 40 D-Index — 34th percentile

34% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 100 D-Index or more.

View D-Index distribution as a table
Number of Social Sciences and Humanities scientists by D-index, Research.com 2026 ranking edition. Based on 7,777 ranked scientists.
D-Index Scientists This scientist
30 177
31 210
32 222
33 188
34 181
35 243
36 261
37 272
38 278
39 300
40 297 40
41 308
42 313
43 300
44 269
45 260
46 228
47 251
48 203
49 186
50 187
51 166
52 138
53 141
54 131
55 137
56 109
57 129
58 95
59 105
60 106
61 86
62 94
63 77
64 79
65 59
66 68
67 51
68 49
69 40
70 43
71 40
72 50
73 46
74 43
75 45
76 45
77 30
78 25
79 31
80 29
81 18
82 21
83 26
84 15
85 15
86 19
87 19
88 12
89 7
90 19
91 20
92 13
93 9
94 13
95 8
96 7
97 6
98 6
99 6
100+ 97
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Overview

Ian Kelleher is affiliated with the Royal College of Surgeons in Ireland and contributes extensively to research in the fields of medicine and psychology. Their work primarily focuses on psychiatry and mental health, with significant contributions in clinical psychology and related subfields.

Kelleher has published research across several topics including:

  • Schizophrenia research and treatment
  • Child and Adolescent Psychosocial and Emotional Development
  • Bipolar Disorder and Treatment
  • Adolescent and Pediatric Healthcare
  • Mental Health Research Topics
  • Mental Health Treatment and Access
  • Psychosomatic Disorders and Their Treatments

The scientist's publications frequently appear in notable venues such as:

  • Psychological Medicine
  • Schizophrenia Bulletin
  • The British Journal of Psychiatry
  • Journal of the American Academy of Child & Adolescent Psychiatry
  • European Psychiatry

Some of their recent papers include:

  • "Referral patterns for specialist child and adolescent mental health services in the Republic of Ireland during the COVID-19 pandemic compared with 2019 and 2018" (2021), published in BJPsych Open
  • "Psychotic experiences in the general population, a review; definition, risk factors, outcomes and interventions" (2022), published in Psychological Medicine
  • "Incidence and Persistence of Psychotic Experiences in the General Population: Systematic Review and Meta-Analysis" (2023), published in Schizophrenia Bulletin
  • "Trauma-informed care for adult survivors of developmental trauma with psychotic and dissociative symptoms: a systematic review of intervention studies" (2020), published in The Lancet Psychiatry
  • "Potential for prediction of psychosis and bipolar disorder in Child and Adolescent Mental Health Services: a longitudinal register study of all people born in Finland in 1987" (2022), published in World Psychiatry

Kelleher collaborates regularly with a group of frequent co-authors, including:

  • Mary Cannon
  • Colm Healy
  • Ulla Lång
  • Mary Clarke
  • David Cotter

Their scholarly activity encompasses a range of disciplines tied to mental health, with a focused research trajectory that spans child and adolescent development as well as severe psychiatric conditions like schizophrenia and bipolar disorder.

Best Publications

  • Prevalence of psychotic symptoms in childhood and adolescence: a systematic review and meta-analysis of population-based studies.

    Ian Kelleher;Dearbhla Connor;Mary C. Clarke;Nina Devlin

  • School-based suicide prevention programmes: the SEYLE cluster-randomised, controlled trial

    Danuta Wasserman;Christina W. Hoven;Camilla Wasserman;Camilla Wasserman;Melanie Wall

  • Psychotic-like experiences in the general population: characterizing a high-risk group for psychosis.

    Ian Kelleher;Mary Cannon

  • Clinicopathological significance of psychotic experiences in non-psychotic young people: evidence from four population-based studies

    Ian Kelleher;Helen Keeley;Paul Corcoran;Fionnuala Lynch

  • Childhood trauma and psychosis in a prospective cohort study: cause, effect, and directionality

    Ian Kelleher;Helen Keeley;Paul Corcoran;Hugh Ramsay

  • Are Screening Instruments Valid for Psychotic-Like Experiences? A Validation Study of Screening Questions for Psychotic-Like Experiences Using In-Depth Clinical Interview

    Ian Kelleher;Michelle Harley;Michelle Harley;Aileen Murtagh;Mary Cannon

  • Associations between childhood trauma, bullying and psychotic symptoms among a school-based adolescent sample

    Ian Kelleher;Michelle Harley;Fionnuala Lynch;Louise Arseneault

  • Psychotic Symptoms and Population Risk for Suicide Attempt A Prospective Cohort Study

    Ian Kelleher;Paul Corcoran;Helen Keeley;Johanna T. W. Wigman

  • Association of Psychotic Experiences With Subsequent Risk of Suicidal Ideation, Suicide Attempts, and Suicide Deaths: A Systematic Review and Meta-analysis of Longitudinal Population Studies.

    Kathryn Yates;Ulla Lång;Martin Cederlöf;Fiona Boland

  • Childhood and adolescent psychotic experiences and risk of mental disorder: a systematic review and meta-analysis.

    Colm Healy;Ross Brannigan;Niamh Dooley;Helen Coughlan

  • Cannabis use and childhood trauma interact additively to increase the risk of psychotic symptoms in adolescence.

    Michelle Harley;Ian Kelleher;Mary C Clarke;Fionnuala Lynch

  • Psychotic Symptoms in Adolescence Index Risk for Suicidal Behavior: Findings From 2 Population-Based Case-Control Clinical Interview Studies

    Ian Kelleher;Fionnuala Lynch;Michelle Harley;Charlene Molloy

  • Psychotic experiences in a mental health clinic sample: implications for suicidality, multimorbidity and functioning

    Ian Kelleher;Nina Devlin;Johanna Tw Wigman;Anne Kehoe

  • Identification and Characterization of Prodromal Risk Syndromes in Young Adolescents in the Community: A Population-Based Clinical Interview Study

    Ian Kelleher;Aileen Murtagh;Charlene Molloy;Sarah Roddy

  • Structural and functional brain correlates of subclinical psychotic symptoms in 11–13 year old schoolchildren

    Sarah Jacobson;Ian Kelleher;Michelle Harley;Aileen Murtagh

  • Psychotic experiences in the general population, a review; definition, risk factors, outcomes and interventions

    Unknown

  • Psychotic experiences in the population: Association with functioning and mental distress

    Ian Kelleher;Johanna T.W. Wigman;Michelle Harley;Michelle Harley;Erik O'Hanlon

  • Association of Urbanicity With Psychosis in Low- and Middle-Income Countries.

    Jordan E DeVylder;Ian Kelleher;Monique Lalane;Hans Oh

  • Neurocognition in the Extended Psychosis Phenotype: Performance of a Community Sample of Adolescents With Psychotic Symptoms on the MATRICS Neurocognitive Battery

    Ian Kelleher;Mary C. Clarke;Caroline Rawdon;Jennifer Murphy

  • PSYCHOTIC EXPERIENCES AS A PREDICTOR OF THE NATURAL COURSE OF, SUICIDAL IDEATION: A SWEDISH COHORT STUDY

    Ian Kelleher;Martin Cederlöf;Paul Lichtenstein

Frequent Co-Authors

Mary Cannon
Mary Cannon Royal College of Surgeons in Ireland
Jordan E. DeVylder
Jordan E. DeVylder Fordham University
Thomas Frodl
Thomas Frodl Otto-von-Guericke University Magdeburg
Ai Koyanagi
Ai Koyanagi University of Barcelona
Marco Sarchiapone
Marco Sarchiapone University of Molise
Mika Gissler
Mika Gissler Finnish Institute for Health and Welfare
Christina W. Hoven
Christina W. Hoven Columbia University
Paul Corcoran
Paul Corcoran University College Cork
Hugh Garavan
Hugh Garavan University of Vermont
Danuta Wasserman
Danuta Wasserman Karolinska Institute

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