World's Best Scientists 2026 revealed!
Ger P. J. Keijsers

Ger P. J. Keijsers

D-Index & Metrics

Psychology

D-Index
36
Citations
6363
World Ranking
9460
National Ranking
413

Ger P. J. Keijsers 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 Ger P. J. Keijsers 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: 147 publications — 47th percentile

47% of scientists in this discipline score the same or lower.

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

Ger P. J. Keijsers 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 Ger P. J. Keijsers 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: 36 D-Index — 19th percentile

19% of scientists in this discipline score the same or lower.

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

Overview

Ger P. J. Keijsers is affiliated with Radboud University in the Netherlands. Their research spans primarily the fields of Psychology and Medicine, with a strong emphasis on Clinical Psychology, Psychiatry and Mental Health, and Experimental and Cognitive Psychology. Applied Psychology and Cognitive Neuroscience also feature in their areas of study.

The main topics that characterize their research include:

  • Anxiety, Depression, Psychometrics, Treatment, Cognitive Processes
  • Bipolar Disorder and Treatment
  • Psychosomatic Disorders and Their Treatments
  • Behavioral Health and Interventions
  • Eating Disorders and Behaviors
  • Schizophrenia research and treatment
  • Child and Adolescent Psychosocial and Emotional Development

Keijsers has published extensively, with a notable focus on psychological treatments and mood disorders. Selected recent publications include:

  • Comparing the effectiveness of imagery focussed cognitive therapy to group psychoeducation for patients with bipolar disorder: A randomised trial (2022, Journal of Affective Disorders)
  • Image qualities and mood variability: Evaluating the utility of an imagery survey for bipolar disorder (2020, Journal of Affective Disorders)
  • Patients' perceived lack of goal clarity in psychological treatments: Scale development and negative correlates (2020, Clinical Psychology & Psychotherapy)
  • Should cognitive restructuring precede imagery rescripting? An experimental pilot study (2022, Journal of Behavior Therapy and Experimental Psychiatry)
  • Exploring aspects of self-reported emotional mental imagery in patients with bipolar disorder (2023, Journal of Behavior Therapy and Experimental Psychiatry)

Frequent coauthors include:

  • K.C. van den Berg
  • Marisol J. Voncken
  • Andrew Hendrickson
  • Jorg Tanis
  • Carolien Martijn

Keijsers' work has appeared in several specialized publication venues multiple times, including:

  • Clinical Psychology & Psychotherapy
  • Journal of Affective Disorders
  • Journal of Behavior Therapy and Experimental Psychiatry
  • Journal of Social and Clinical Psychology
  • Behaviour Research and Therapy

Best Publications

  • Prolonged exposure in patients with chronic PTSD: predictors of treatment outcome and dropout.

    A. van Minnen;A.R. Arntz;G.P.J. Keijsers

  • Work stress and attentional difficulties: An initial study on burnout and cognitive failures

    Dimitri Van Der Linden;Ger P.J. Keijsers;Paul Eling;Rachel Van Schaijk

  • The Impact of Interpersonal Patient and Therapist Behavior on Outcome in Cognitive-Behavior Therapy: A Review of Empirical Studies

    G.P.J. Keijsers;C.P.D.R. Schaap;C.A.L. Hoogduin

  • Childhood abuse in patients with conversion disorder

    Karin Roelofs;Ger P. J. Keijsers;Kees A. L. Hoogduin;Gérard W. B. Näring

  • Exposure with response prevention versus habit reversal in Tourettes's syndrome: a controlled study.

    Cara W.J Verdellen;Ger P.J Keijsers;Danielle C Cath;Cees A.L Hoogduin

  • Behavior Therapy Versus Clomipramine for the Treatment of Obsessive-Compulsive Disorder in Children and Adolescents

    Else De Haan;Kees A.L. Hoogduin;Jan K. Buitelaar;Ger P.J. Keijsers

  • Treatment of Trichotillomania With Behavioral Therapy or Fluoxetine A Randomized, Waiting-List Controlled Study

    Agnes van Minnen;Kees A. L. Hoogduin;Ger P. J. Keijsers;Inge Hellenbrand

  • Predictors of treatment outcome in the behavioural treatment of obsessive-compulsive disorder.

    Ger P. J. Keijsers;Cees A. L. Hoogduin;Cas P. D. R. Schaap

  • Cognitive-behavioural therapy for late-life anxiety disorders: a systematic review and meta-analysis.

    G.J. Hendriks;G.J. Hendriks;R.C. Oude Voshaar;G.P.J. Keijsers;C.A.L. Hoogduin

  • Psychometric properties of a Dutch version of the Maslach Burnout Inventory General Survey (MBI‐DV) in individuals with and without clinical burnout

    Jeffrey Roelofs;Marc Verbraak;Ger P. J. Keijsers;Marieke B. N. de Bruin

  • Performance and burnout in intensive care units

    Ger J. Keijsers;Wilmar B. Schaufeli;Pascale M. Le Blanc;Carmen Zwerts

  • The emotional Stroop: a comparison of panic disorder patients, obsessive-compulsive patients, and normal controls, in two experiments.

    Mirjam Kampman;Ger P.J Keijsers;Marc J.P.M Verbraak;Gérard Näring

  • The effects of brief cognitive-behaviour therapy for pathological skin picking: A randomized comparison to wait-list control.

    Kathrin Schuck;Ger P.J. Keijsers;Mike Rinck

  • Habituation of Premonitory Sensations During Exposure and Response Prevention Treatment in Tourette's Syndrome

    Cara W. J. Verdellen;Cees A. L. Hoogduin;Bernet S. Kato;Ger P. J. Keijsers

  • Cortisol deviations in people with burnout before and after psychotherapy: a pilot study.

    Paula M. C. Mommersteeg;Ger P. J. Keijsers;Cobi J. Heijnen;Marc J. P. M. Verbraak

  • Addition of cognitive-behaviour therapy for obsessive-compulsive disorder patients non-responding to fluoxetine

    M. Kampman;G. P. J. Keijsers;C. A. L. Hoogduin;M. J. P. M. Verbraak

  • Dropout prediction in cognitive behavior therapy for panic disorder

    Ger P.J. Keijsers;Mirjam Kampman;Cees A.L. Hoogduin

  • A randomized, double-blind, placebo-controlled study of the effects of adjunctive paroxetine in panic disorder patients unsuccessfully treated with cognitive-behavioral therapy alone.

    Mirjam Kampman;Ger P J Keijsers;Cees A L Hoogduin;Gert-Jan Hendriks

  • Social anxiety and evaluation of social crowds: explicit and implicit measures.

    Wolf-Gero Lange;Ger Keijsers;Eni S. Becker;Mike Rinck

  • Prognostic factors in the behavioral treatment of panic disorder with and without agoraphobia

    Ger P.J. Keijsers;Cees A.L. Hoogduin;Cas P.D.R. Schaap

  • Hypnotic susceptibility in patients with conversion disorder

    Karin Roelofs;Kees A. L. Hoogduin;Ger P. J. Keijsers;Gérard W. B. Näring

Frequent Co-Authors

Eni S. Becker
Eni S. Becker Radboud University
Agnes van Minnen
Agnes van Minnen Radboud University
Karin Roelofs
Karin Roelofs Radboud University
Richard C. Oude Voshaar
Richard C. Oude Voshaar University Medical Center Groningen
Johan C. Karremans
Johan C. Karremans Radboud University
Paul M. G. Emmelkamp
Paul M. G. Emmelkamp University of Amsterdam
Anton J. L. M. van Balkom
Anton J. L. M. van Balkom University of Amsterdam
Peter J. de Jong
Peter J. de Jong University of Groningen
Danielle C. Cath
Danielle C. Cath Utrecht University
Mike Rinck
Mike Rinck Radboud University

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