World's Best Scientists 2026 revealed!

D-Index & Metrics

Psychology

D-Index
92
Citations
38733
World Ranking
870
National Ranking
47

Gerjo Kok 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 Gerjo Kok 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: 515 publications — 97th percentile

97% of scientists in this discipline score the same or lower.

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

Gerjo Kok 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 Gerjo Kok 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: 92 D-Index — 93rd percentile

93% of scientists in this discipline score the same or lower.

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

Overview

Gerjo Kok is affiliated with Maastricht University in the Netherlands. Their research spans multiple disciplines with a primary focus on psychology, medicine, and health professions. Within these areas, specific subfields include general health professions, applied psychology, clinical psychology, cardiology and cardiovascular medicine, and broader health studies.

Their work covers a range of topics, prominently behavioral health and interventions, COVID-19 and mental health, blood pressure and hypertension studies, early childhood education and development, child and adolescent psychosocial and emotional development, environmental education and sustainability, and vaccine coverage and hesitancy.

Gerjo Kok has contributed to multiple papers, including the following notable recent publications:

  • A Systematic Literature Review of Concepts and Factors Related to Pro-Environmental Consumer Behaviour in Relation to Waste Management Through an Interdisciplinary Approach (2020, Sustainability)
  • Understanding the Social Stigma of Fetal Alcohol Spectrum Disorders: From Theory to Interventions (2020, Foundations of Science)
  • Recycling Behaviour: Mapping Knowledge Domain Through Bibliometrics and Text Mining (2021, Journal of Environmental Management)
  • Prevalence of Hypertension in Ghanaian Society: A Systematic Review, Meta-Analysis, and GRADE Assessment (2021, Systematic Reviews)
  • COVID-19 Vaccine Hesitancy: The Role of Information Sources and Beliefs in Dutch Adults (2022, International Journal of Environmental Research and Public Health)

Frequent co-authors in Gerjo Kok's work include Gill A. ten Hoor, Robert A. C. Ruiter, Karlijn Massar, Fidelis Atibila, and Emmanuel Timmy Donkoh. Collaborative efforts with these researchers are evident across numerous publications.

Gerjo Kok's research has appeared in several publication venues multiple times. The most prominent among these are Health Psychology Bulletin, Eye, Frontiers in Public Health, Vaccines, and International Journal of Behavioral Medicine.

Best Publications

  • The theory of planned behavior: a review of its applications to health-related behaviors.

    Gaston Godin;Gerjo Kok

  • Planning Health Promotion Programs: An Intervention Mapping Approach

    L.K. Bartholomew;G.S. Parcel;G. Kok;N.H. Gottlieb

  • Intervention Mapping: A Process for Developing Theory and Evidence-Based Health Education Programs:

    L K Bartholomew;G S Parcel;G Kok

  • A taxonomy of behaviour change methods: an Intervention Mapping approach.

    Gerjo Kok;Nell H Gottlieb;Gjalt-Jorn Y Peters;Patricia Dolan Mullen

  • Scary warnings and rational precautions: A review of the psychology of fear appeals.

    Robert A.C. Ruiter;Charles Abraham;Gerjo Kok

  • Implementation Mapping: Using Intervention Mapping to Develop Implementation Strategies.

    Maria E. Fernandez;Gill A. ten Hoor;Sanne van Lieshout;Serena A. Rodriguez

  • Intervention mapping : designing theory- and evidence-based health promotion programs

    Gerjo Kok;Guy S. Parcel

  • Threatening communication: a critical re-analysis and a revised meta-analytic test of fear appeal theory

    Gjalt-Jorn Ygram Peters;Robert A.C. Ruiter;Gerjo Kok

  • Correlates of Exercise Compliance in Physical Therapy

    E M Sluijs;G J Kok;J van der Zee

  • Sixty years of fear appeal research: Current state of the evidence

    Robert A. C. Ruiter;Loes T. E. Kessels;Gjalt-Jorn Y. Peters;Gjalt-Jorn Y. Peters;Gerjo Kok

  • Perceived risk, anxiety, and behavioural responses of the general public during the early phase of the Influenza A (H1N1) pandemic in the Netherlands: results of three consecutive online surveys

    Marloes Bults;Desirée Jma Beaujean;Onno de Zwart;Gerjo Kok

  • Goal Setting as a Strategy for Health Behavior Change

    Victor J. Strecher;Gerard H. Seijts;Gerjo J. Kok;Gary P. Latham

  • Intervention mapping: protocol for applying health psychology theory to prevention programmes

    Gerjo Kok;Herman Schaalma;Robert A. C. Ruiter;Pepijn Van Empelen

  • The impact of social influences in the context of attitude, self-efficacy, intention, and previous behavior as predictors of smoking onset

    Hein De Vries;Esther Backbier;Gerjo Kok;Margo Dijkstra

  • Intervention Mapping: Theory- and Evidence-Based Health Promotion Program Planning: Perspective and Examples

    Maria E. Fernandez;Robert A.C. Ruiter;Christine Margaret Markham;Gerjo Kok

  • The Impact of Computer-Tailored Feedback and Iterative Feedback on Fat, Fruit, and Vegetable Intake:

    J. Brug;K. Glanz;P. Van Assema;G. Kok

  • Worldwide Prevalence of Fetal Alcohol Spectrum Disorders: A Systematic Literature Review Including Meta-Analysis

    Sylvia Roozen;Sylvia Roozen;Gjalt-Jorn Y. Peters;Gjalt-Jorn Y. Peters;Gerjo Kok;Gerjo Kok;David Townend;David Townend

  • Food and values: an examination of values underlying attitudes toward genetically modified- and organically grown food products

    Ellen Dreezens;Carolien Martijn;Petra Tenbült;Gerjo Kok

  • School programs targeting stress management in children and adolescents: a meta-analysis

    Gerda Kraag;Maurice P. Zeegers;Maurice P. Zeegers;Gerjo Kok;Clemens Hosman;Clemens Hosman

  • Designing a quality improvement intervention: a systematic approach

    M A van Bokhoven;G Kok;T van der Weijden

  • Determinants of consistent condom use by adolescents: the impact of experience of sexual intercourse

    Herman Schaalma;Gerjo Kok;Louk Peters

Frequent Co-Authors

Robert A. C. Ruiter
Robert A. C. Ruiter Maastricht University
Leopold M. G. Curfs
Leopold M. G. Curfs Maastricht University
Herman P. Schaalma
Herman P. Schaalma Maastricht University
Harm J. Hospers
Harm J. Hospers Maastricht University
Arjan E. R. Bos
Arjan E. R. Bos The Open University
Ruud J.G. Halfens
Ruud J.G. Halfens Maastricht University
Johannes Brug
Johannes Brug Utrecht University
Guy S. Parcel
Guy S. Parcel The University of Texas Health Science Center at Houston
Rik Crutzen
Rik Crutzen Maastricht University
Gerard J. P. van Breukelen
Gerard J. P. van Breukelen Maastricht University

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Related Online Degrees & Career Pathways

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