World's Best Scientists 2026 revealed!

D-Index & Metrics

Psychology

D-Index
56
Citations
12670
World Ranking
4199
National Ranking
201

Mark van der Gaag 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 Mark van der Gaag 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: 296 publications — 87th percentile

87% of scientists in this discipline score the same or lower.

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

Mark van der Gaag 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 Mark van der Gaag 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: 56 D-Index — 64th percentile

64% of scientists in this discipline score the same or lower.

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

Overview

Mark van der Gaag is affiliated with Vrije Universiteit Amsterdam in the Netherlands, focusing on research primarily at the intersection of psychology and medicine. Their work spans multiple subfields including psychiatry and mental health, clinical psychology, experimental and cognitive psychology, social psychology, and philosophy.

The scientist's research topics cover a range of mental health-related areas, notably:

  • Schizophrenia research and treatment
  • Mental health research topics
  • Mental health and psychiatry
  • Mental health treatment and access
  • Child and adolescent psychosocial and emotional development
  • Tryptophan and brain disorders
  • Psychosomatic disorders and their treatments

Mark van der Gaag has published articles in various prominent journals, with frequent contributions to:

  • Schizophrenia Bulletin
  • Frontiers in Psychiatry
  • Trials
  • Psychological Medicine
  • Schizophrenia Research

Significant recent papers illustrating the scope and focus of their research include:

  • "Preventive interventions for individuals at ultra high risk for psychosis: An updated and extended meta-analysis", 2021, Clinical Psychology Review
  • "Development of Proteomic Prediction Models for Transition to Psychotic Disorder in the Clinical High-Risk State and Psychotic Experiences in Adolescence", 2020, JAMA Psychiatry
  • "Cost-Effectiveness of Virtual Reality Cognitive Behavioral Therapy for Psychosis: Health-Economic Evaluation Within a Randomized Controlled Trial", 2020, Journal of Medical Internet Research
  • "Dysregulated Lipid Metabolism Precedes Onset of Psychosis", 2020, Biological Psychiatry
  • "What Constitutes Sufficient Evidence for Case Formulation-Driven CBT for Psychosis? Cumulative Meta-analysis of the Effect on Hallucinations and Delusions", 2020, Schizophrenia Bulletin

The scientist collaborates frequently with other researchers in the field. Key co-authors include:

  • Lieuwe de Haan
  • Lucia Valmaggia
  • Matthew J. Kempton
  • Barnaby Nelson
  • Stephan Ruhrmann

Best Publications

  • The five-factor model of the Positive and Negative Syndrome Scale - II: A ten-fold cross-validation of a revised model

    Mark van der Gaag;Tonko Hoffman;Mila Remijsen;Ron Hijman

  • The Validity of the 16-Item Version of the Prodromal Questionnaire (PQ-16) to Screen for Ultra High Risk of Developing Psychosis in the General Help-Seeking Population

    Helga K. Ising;Wim Veling;Rachel L. Loewy;Marleen W. Rietveld

  • Preventing a first episode of psychosis: Meta-analysis of randomized controlled prevention trials of 12 month and longer-term follow-ups

    Mark van der Gaag;Filip Smit;Andreas Bechdolf;Paul French

  • Psychological Interventions for Psychosis: A Meta-Analysis of Comparative Outcome Studies

    David Trevor Turner;Mark van der Gaag;Eirini Karyotaki;Pim Cuijpers

  • CRITICAL ANALYSIS OF THE CURRENT TREATMENT GUIDELINES FOR COMPLEX PTSD IN ADULTS.

    Ad De Jongh;Ad De Jongh;Patricia A. Resick;Lori A. Zoellner;Agnes van Minnen

  • Prolonged Exposure vs Eye Movement Desensitization and Reprocessing vs Waiting List for Posttraumatic Stress Disorder in Patients With a Psychotic Disorder: A Randomized Clinical Trial

    David P. G. van den Berg;Paul A. J. M. de Bont;Berber M. van der Vleugel;Carlijn de Roos

  • The effects of individually tailored formulation-based cognitive behavioural therapy in auditory hallucinations and delusions: a meta-analysis.

    Mark van der Gaag;Lucia R. Valmaggia;Lucia R. Valmaggia;Filip Smit

  • Identifying Gene-Environment Interactions in Schizophrenia: Contemporary Challenges for Integrated, Large-scale Investigations

    Jim van Os;Jim van Os;Bart P. Rutten;Inez Myin-Germeys;Philippe Delespaul

  • Psychological Therapies for Auditory Hallucinations (Voices): Current Status and Key Directions for Future Research

    Neil Thomas;Mark Hayward;Mark Hayward;Emmanuelle Peters;Emmanuelle Peters;Mark van der Gaag

  • Cognitive Behavioral Therapy for Subjects at Ultrahigh Risk for Developing Psychosis: A Randomized Controlled Clinical Trial

    Mark van der Gaag;Dorien H. Nieman;Judith Rietdijk;Sara Dragt

  • The Treatment of Hallucinations in Schizophrenia Spectrum Disorders

    Iris E. C. Sommer;Christina W. Slotema;Zafiris J. Daskalakis;Eske M. Derks

  • IS IT TIME TO DEVELOP A NEW COGNITIVE THERAPY FOR PSYCHOSIS—COGNITIVE REMEDIATION THERAPY (CRT)?

    Til Wykes;Mark van der Gaag

  • A Meta-Analysis of Social Skills Training and Related Interventions for Psychosis.

    David T Turner;Edel McGlanaghy;Pim Cuijpers;Mark van der Gaag

  • Two subdomains of negative symptoms in psychotic disorders: Established and confirmed in two large cohorts

    Edith Liemburg;Stynke Castelein;Roy Stewart;Mark van der Gaag

  • Virtual-reality-based cognitive behavioural therapy versus waiting list control for paranoid ideation and social avoidance in patients with psychotic disorders: a single-blind randomised controlled trial

    Roos M C A Pot-Kolder;Chris N W Geraets;Wim Veling;Marije van Beilen

  • Trauma and recent life events in individuals at ultra high risk for psychosis: review and meta-analysis.

    Tamar Kraan;Eva Velthorst;Eva Velthorst;Filip Smit;Filip Smit;Lieuwe de Haan

  • Treating trauma in psychosis with EMDR: a pilot study.

    David P.G. van den Berg;Mark van der Gaag

  • The five-factor model of the Positive and Negative Syndrome Scale I: confirmatory factor analysis fails to confirm 25 published five-factor solutions.

    Mark van der Gaag;Anke Cuijpers;Tonko Hoffman;Mila Remijsen

  • Cognitive-behavioural therapy for refractory psychotic symptoms of schizophrenia resistant to atypical antipsychotic medication. Randomised controlled trial.

    Lucia R Valmaggia;Mark van der Gaag;Nicholas Tarrier;Marieke Pijnenborg

  • A Controlled Trial of Cognitive Remediation in Schizophrenia

    Mark van der Gaag;Robert S Kern;Robert J van den Bosch;Robert P Liberman

Frequent Co-Authors

Jim van Os
Jim van Os University Medical Center Utrecht
Lucia Valmaggia
Lucia Valmaggia King's College London
Philip McGuire
Philip McGuire University of Oxford
Stephan Ruhrmann
Stephan Ruhrmann University of Cologne
Dorien H. Nieman
Dorien H. Nieman University of Amsterdam
David Van Den Berg
David Van Den Berg University of Southern California
Filip Smit
Filip Smit Rutgers, The State University of New Jersey
Barnaby Nelson
Barnaby Nelson University of Melbourne
Anita Riecher-Rössler
Anita Riecher-Rössler University of Basel
Eva Velthorst
Eva Velthorst Icahn School of Medicine at Mount Sinai

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Related Online Degrees & Career Pathways

Considering a degree in Psychology opens doors to a range of online programs and rewarding careers in counseling and mental health. Aspiring professionals often aim to become Licensed Professional Counselors (LPC), a career pathway with specific educational and licensure requirements in each state.

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By exploring online psychology degrees and understanding local licensure requirements, you can make informed decisions and set a strong foundation for your counseling career.

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