World's Best Scientists 2026 revealed!

D-Index & Metrics

Psychology

D-Index
37
Citations
7100
World Ranking
9118
National Ranking
27

Fiona McNicholas publication distribution in Psychology in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Psychology in 2026. The highlighted bar marks where Fiona McNicholas sits on this spectrum.

31–40 publications: 6 scientists 41–50 publications: 52 scientists 51–60 publications: 138 scientists 61–70 publications: 299 scientists 71–80 publications: 461 scientists 81–90 publications: 605 scientists 91–100 publications: 713 scientists 101–110 publications: 736 scientists 111–120 publications: 686 scientists 121–130 publications: 670 scientists 131–140 publications: 644 scientists 141–150 publications: 597 scientists 151–160 publications: 576 scientists 161–170 publications: 477 scientists 171–180 publications: 450 scientists 181–190 publications: 397 scientists 191–200 publications: 343 scientists 201–210 publications: 328 scientists 211–220 publications: 313 scientists 221–230 publications: 283 scientists 231–240 publications: 226 scientists 241–250 publications: 196 scientists 251–260 publications: 201 scientists 261–270 publications: 171 scientists 271–280 publications: 151 scientists 281–290 publications: 139 scientists 291–300 publications: 113 scientists 301–310 publications: 102 scientists 311–320 publications: 100 scientists 321–330 publications: 76 scientists 331–340 publications: 92 scientists 341–350 publications: 85 scientists 351–360 publications: 69 scientists 361–370 publications: 71 scientists 371–380 publications: 63 scientists 381–390 publications: 58 scientists 391–400 publications: 57 scientists 401–410 publications: 43 scientists 411–420 publications: 33 scientists 421–430 publications: 50 scientists 431–440 publications: 41 scientists 441–450 publications: 32 scientists 451–460 publications: 27 scientists 461–470 publications: 28 scientists 471–480 publications: 25 scientists 481–490 publications: 28 scientists 491–500 publications: 20 scientists 501–510 publications: 23 scientists 511–520 publications: 26 scientists 521–530 publications: 17 scientists 531–540 publications: 21 scientists 541–550 publications: 14 scientists 551–560 publications: 16 scientists 561–570 publications: 10 scientists 571–580 publications: 22 scientists 581–590 publications: 9 scientists 591–600 publications: 14 scientists 601–610 publications: 9 scientists 611–620 publications: 11 scientists 621–630 publications: 4 scientists 631–640 publications: 7 scientists 641–650 publications: 5 scientists 651–660 publications: 10 scientists 661–670 publications: 8 scientists 671–680 publications: 8 scientists 681–690 publications: 4 scientists 691–700 publications: 3 scientists 701–704 publications: 4 scientists 705+ publications: 100 scientists
31 publications 705+

This scientist: 236 publications — 78th percentile

78% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 705 publications or more.

Fiona McNicholas D-index placement in Psychology in 2026

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

30–31 D-Index: 398 scientists 32–33 D-Index: 702 scientists 34–35 D-Index: 671 scientists 36–37 D-Index: 659 scientists 38–39 D-Index: 641 scientists 40–41 D-Index: 671 scientists 42–43 D-Index: 617 scientists 44–45 D-Index: 558 scientists 46–47 D-Index: 495 scientists 48–49 D-Index: 487 scientists 50–51 D-Index: 445 scientists 52–53 D-Index: 390 scientists 54–55 D-Index: 408 scientists 56–57 D-Index: 345 scientists 58–59 D-Index: 325 scientists 60–61 D-Index: 321 scientists 62–63 D-Index: 248 scientists 64–65 D-Index: 290 scientists 66–67 D-Index: 218 scientists 68–69 D-Index: 219 scientists 70–71 D-Index: 215 scientists 72–73 D-Index: 183 scientists 74–75 D-Index: 169 scientists 76–77 D-Index: 132 scientists 78–79 D-Index: 137 scientists 80–81 D-Index: 120 scientists 82–83 D-Index: 112 scientists 84–85 D-Index: 86 scientists 86–87 D-Index: 101 scientists 88–89 D-Index: 83 scientists 90–91 D-Index: 77 scientists 92–93 D-Index: 70 scientists 94–95 D-Index: 78 scientists 96–97 D-Index: 58 scientists 98–99 D-Index: 53 scientists 100–101 D-Index: 57 scientists 102–103 D-Index: 48 scientists 104–105 D-Index: 53 scientists 106–107 D-Index: 46 scientists 108–109 D-Index: 24 scientists 110–111 D-Index: 35 scientists 112–113 D-Index: 27 scientists 114–115 D-Index: 32 scientists 116–117 D-Index: 31 scientists 118–119 D-Index: 22 scientists 120–121 D-Index: 16 scientists 122–123 D-Index: 24 scientists 124–125 D-Index: 18 scientists 126–127 D-Index: 11 scientists 128–129 D-Index: 19 scientists 130–131 D-Index: 10 scientists 132–133 D-Index: 16 scientists 134–135 D-Index: 10 scientists 136–137 D-Index: 12 scientists 138–139 D-Index: 8 scientists 140–141 D-Index: 5 scientists 142–143 D-Index: 12 scientists 144+ D-Index: 98 scientists
30 D-Index 144+

This scientist: 37 D-Index — 21st percentile

21% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 144 D-Index or more.

Overview

Fiona McNicholas is affiliated with University College Dublin in Ireland and has contributed extensively to research in Psychology, Medicine, and Health Professions. Their work addresses significant topics within clinical psychology, psychiatry, and general health professions, with a particular focus on mental health during the COVID-19 pandemic and child and adolescent healthcare.

The main fields of study include:

  • Psychology
  • Medicine
  • Health Professions

Key subfields associated with their research are:

  • Clinical Psychology
  • General Health Professions
  • Psychiatry and Mental Health
  • Speech and Hearing
  • Social Psychology

McNicholas has concentrated research efforts on topics such as:

  • COVID-19 and Mental Health
  • Child and Adolescent Psychosocial and Emotional Development
  • Attention Deficit Hyperactivity Disorder
  • Adolescent and Pediatric Healthcare
  • Healthcare Professionals' Stress and Burnout
  • Eating Disorders and Behaviors
  • Suicide and Self-Harm Studies

The scientist has published numerous articles in well-known venues, with frequent contributions to:

  • Irish Journal of Psychological Medicine
  • Irish Journal of Medical Science (1971 -)
  • BJPsych Open
  • European Child & Adolescent Psychiatry
  • HRB Open Research

Among the recent published papers authored or coauthored by McNicholas are:

  • 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, BJPsych Open
  • Medical students and COVID-19: the need for pandemic preparedness, 2020, Journal of Medical Ethics
  • Mental health and the COVID-19 pandemic, 2020, Irish Journal of Psychological Medicine
  • The use of telepsychiatry during COVID-19 and beyond, 2020, Irish Journal of Psychological Medicine
  • Levels of stress in medical students due to COVID-19, 2021, Journal of Medical Ethics

Frequent collaborators include:

  • Blánaid Gavin
  • Dimitrios Adamis
  • Tomislav Franić
  • Helena Tuomainen
  • Ulrike Schulze

Best Publications

  • Risk factors for childhood overweight: A prospective study from birth to 9.5 years

    W.Stewart Agras;Lawrence D. Hammer;Fiona McNicholas;Helena C. Kraemer

  • Updated European Consensus Statement on Diagnosis and Treatment of Adult ADHD

    J.J.S. Kooij;D. Bijlenga;L. Salerno;R. Jaeschke

  • 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

  • A prospective study of the influence of eating-disordered mothers on their children

    Stewart Agras;Lawrence Hammer;Fiona McNicholas

  • Medical students and COVID-19: the need for pandemic preparedness.

    Lorcan O'Byrne;Blánaid Gavin;Fiona McNicholas

  • Increasing rates of self-harm among children, adolescents and young adults: a 10-year national registry study 2007–2016

    Eve Griffin;Elaine M. McMahon;Fiona McNicholas;Fiona McNicholas;Paul Corcoran

  • 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.

    Fiona McNicholas;Ian Kelleher;Elma Hedderman;Fionnuala Lynch

  • Mental health and the COVID-19 pandemic.

    Blánaid Gavin;John Lyne;John Lyne;Fiona McNicholas

  • Architecture and functioning of child and adolescent mental health services: a 28-country survey in Europe

    Giulia Signorini;Swaran P. Singh;Vlatka Boricevic-Marsanic;Gwen Dieleman

  • Caring for the Psychological Well-Being of Healthcare Professionals in the Covid-19 Pandemic Crisis.

    B. Gavin;J. Hayden;D. Adamis;Fiona McNicholas

  • The use of telepsychiatry during COVID-19 and beyond.

    M O'Brien;F McNicholas;F McNicholas

  • What do general practitioners know about ADHD? Attitudes and knowledge among first-contact gatekeepers: systematic narrative review.

    Mimi Tatlow-Golden;Lucia Prihodova;Blanaid Gavin;Walter Cullen

  • The interface between child/adolescent and adult mental health services: results from a European 28-country survey

    Giulia Signorini;Swaran P. Singh;Vlatka Boricevic Marsanic;Gwen Dieleman

  • Levels of stress in medical students due to COVID-19.

    Lorcan O'Byrne;Blánaid Gavin;Dimitrios Adamis;You Xin Lim

  • COVID-19, mental health and psychological first aid.

    Elisha Minihan;Blánaid Gavin;Brendan D. Kelly;Fiona McNicholas

  • Pandemic-related emergency psychiatric presentations for self-harm of children and adolescents in 10 countries (PREP-kids): a retrospective international cohort study.

    Dennis Ougrin;Ben Hoi-Ching Wong;Mehrak Vaezinejad;Paul L Plener;Paul L Plener

  • COVID-19 related occupational stress in teachers in Ireland

    Unknown

  • Burnout in consultants in child and adolescent mental health services (CAMHS) in Ireland: a cross-sectional study.

    Fiona McNicholas;Sonita Sharma;Cliodhna Oconnor;Elizabeth Barrett;Elizabeth Barrett

  • How does psychiatric diagnosis affect young people's self-concept and social identity? A systematic review and synthesis of the qualitative literature

    Cliodhna O'Connor;Irini Kadianaki;Kristen Maunder;Fiona McNicholas

  • Efficacy and safety of extended-release guanfacine hydrochloride in children and adolescents with attention-deficit/hyperactivity disorder: a randomized, controlled, phase III trial.

    Amaia Hervas;Michael Huss;Mats Johnson;Fiona McNicholas

  • Transition from child and adolescent to adult mental health services in the Republic of Ireland: an investigation of process and operational practice.

    Niamh McNamara;Fiona McNicholas;Tamsin Ford;Moli Paul

  • Dissociation in Response to Methylphenidate on Response Variability in a Group of Medication Naive Children with ADHD.

    Katherine A Johnson;Edwina Barry;Mark Andrew Bellgrove;Mark Andrew Bellgrove;Marie Cox

  • Pandemic-Related Emergency Psychiatric Presentations for Self-Harm of Children and Adolescents in 10 Countries (PREP-Kids): A Retrospective International Cohort Study

    Dennis Ougrin;Hoi Ching Wong;Mehrak Vaezinejad;Paul L. Plener

Frequent Co-Authors

Frank C. Verhulst
Frank C. Verhulst Erasmus University Rotterdam
Mark A. Bellgrove
Mark A. Bellgrove Monash University
Tamsin Ford
Tamsin Ford University of Cambridge
Michael Fitzgerald
Michael Fitzgerald Trinity College Dublin
Dieter Wolke
Dieter Wolke University of Warwick
Patrick D. McGorry
Patrick D. McGorry University of Melbourne
Giovanni de Girolamo
Giovanni de Girolamo Centro San Giovanni di Dio Fatebenefratelli
Michael Gill
Michael Gill Trinity College Dublin
Lena Sanci
Lena Sanci University of Melbourne
Thomas Frodl
Thomas Frodl Otto-von-Guericke University Magdeburg

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