World's Best Scientists 2026 revealed!
Roy P.C. Kessels

Roy P.C. Kessels

D-Index & Metrics

Psychology

D-Index
80
Citations
26649
World Ranking
1439
National Ranking
77

Neuroscience

D-Index
80
Citations
27145
World Ranking
1606
National Ranking
50

Roy P.C. Kessels 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 Roy P.C. Kessels 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: 528 publications — 98th percentile

98% of scientists in this discipline score the same or lower.

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

Roy P.C. Kessels 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 Roy P.C. Kessels 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: 80 D-Index — 88th percentile

88% of scientists in this discipline score the same or lower.

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

Overview

Roy P.C. Kessels is affiliated with Radboud University in the Netherlands. Their research expertise lies primarily in the fields of Medicine and Neuroscience, with a significant focus on Cognitive Neuroscience, Neurology, and Psychiatry and Mental Health. Additional areas of study include Experimental and Cognitive Psychology and Physiology.

Their scholarly contributions address a range of topics including:

  • Dementia and Cognitive Impairment Research
  • Memory and Neural Mechanisms
  • Alcoholism and Thiamine Deficiency
  • Parkinson's Disease Mechanisms and Treatments
  • Cognitive Functions and Memory
  • Neural and Behavioral Psychology Studies
  • Stroke Rehabilitation and Recovery

They have published research in several academic venues, frequently contributing to these journals:

  • Neuropsychology Review
  • Journal of Clinical Medicine
  • Journal of the International Neuropsychological Society
  • Journal of Neuropsychology
  • Neurology

Among recent publications, notable papers include:

  • "European intersocietal recommendations for the biomarker-based diagnosis of neurocognitive disorders" (2024), published in The Lancet Neurology
  • "Psychometric properties of the Montreal Cognitive Assessment (MoCA) in healthy participants aged 18-70" (2020), published in International Journal of Psychiatry in Clinical Practice
  • "Post-Stroke Working Memory Dysfunction: A Meta-Analysis and Systematic Review" (2020), published in Neuropsychology Review
  • "Perivascular Spaces, Diffusivity Along Perivascular Spaces, and Free Water in Cerebral Small Vessel Disease" (2024), published in Neurology
  • "The short-term effects of sedentary behaviour on cerebral hemodynamics and cognitive performance in older adults: a cross-over design on the potential impact of mental and/or physical activity" (2020), published in Alzheimer's Research & Therapy

Collaboration is a component of their research activity, with frequent coauthors including:

  • Frank-Erik de Leeuw
  • Anil M. Tuladhar
  • Yvonne C. M. Rensen
  • Jurgen A.H.R. Claassen
  • Joukje M. Oosterman

Best Publications

  • Patients' memory for medical information.

    Roy P C Kessels

  • The Corsi Block-Tapping Task: Standardization and Normative Data

    Kessels Rp;van Zandvoort Mj;Postma A;Kappelle Lj

  • The Effects of Type 1 Diabetes on Cognitive Performance: A meta-analysis

    Augustina M.A. Brands;Geert Jan Biessels;Edward H.F. de Haan;L. Jaap Kappelle

  • Brain Magnetic Resonance Imaging Correlates of Impaired Cognition in Patients With Type 2 Diabetes

    S.M. Manschot;A.M.A. Brands;J. van der Grond;R.P.C. Kessels

  • P300 development across the lifespan: a systematic review and meta-analysis.

    Rik van Dinteren;Martijn Arns;Marijtje L. A. Jongsma;Roy P. C. Kessels;Roy P. C. Kessels

  • Effectiveness of home-based and remotely supervised aerobic exercise in Parkinson's disease: a double-blind, randomised controlled trial

    Nicolien M van der Kolk;Nienke M de Vries;Roy P C Kessels;Hilde Joosten

  • Positive effects of combined cognitive and physical exercise training on cognitive function in older adults with mild cognitive impairment or dementia: A meta-analysis.

    Esther G. A. Karssemeijer;Justine A. Aaronson;Willem J. Bossers;Tara Smits

  • Sex differences in the perception of affective facial expressions: Do men really lack emotional sensitivity?

    Barbara Montagne;Roy P. C. Kessels;Elisa Frigerio;Edward H. F. de Haan

  • Type 2 diabetes mellitus, hypertension, dyslipidemia and obesity: A systematic comparison of their impact on cognition

    Esther van den Berg;Raoul P. Kloppenborg;Roy P.C. Kessels;Roy P.C. Kessels;Roy P.C. Kessels;L. Jaap Kappelle

  • The backward span of the Corsi Block-Tapping Task and its association with the WAIS-III Digit Span.

    Roy P. C. Kessels;Esther van den Berg;Carla Ruis;Augustina M. A. Brands

  • The influence of fear of falling on gait and balance in older people

    Miriam F. Reelick;Marianne B. van Iersel;Roy P. C. Kessels;Marcel G. M. Olde Rikkert

  • A 4 year follow-up study of cognitive functioning in patients with type 2 diabetes mellitus

    E. van den Berg;Y.D. Reijmer;J.H.J. de Bresser;R.P.C. Kessels;R.P.C. Kessels;R.P.C. Kessels

  • The Emotion Recognition Task: A Paradigm to Measure the Perception of Facial Emotional Expressions at Different Intensities

    Barbara Montagne;Roy P. C. Kessels;Edward H. F. De Haan;David I. Perrett

  • Executive Functions Are Associated With Gait and Balance in Community-Living Elderly People

    Marianne B van Iersel;Roy P C Kessels;Bastiaan R Bloem;André L M Verbeek

  • Varieties of human spatial memory: a meta-analysis on the effects of hippocampal lesions

    Roy P.C. Kessels;Edward H.F. de Haan;L.Jaap Kappelle;Albert Postma

  • Korsakoff's syndrome: A critical review

    Nicolaas J. M. Arts;Serge J. W. Walvoort;Roy P. C. Kessels

  • A single administration of testosterone improves visuospatial ability in young women.

    André Aleman;Erik Bronk;Roy P.C Kessels;Hans P.F Koppeschaar

  • Sex differences for selective forms of spatial memory.

    Albert Postma;Gerry Jager;Roy P.C Kessels;Hans P.F Koppeschaar

  • The right hippocampus participates in short-term memory maintenance of object–location associations

    Carinne Piekema;Carinne Piekema;Roy P. C. Kessels;Rogier B. Mars;Rogier B. Mars;Karl Magnus Petersson

  • Brain areas involved in spatial working memory

    Marieke van Asselen;Roy P.C. Kessels;Sebastiaan F.W. Neggers;L. Jaap Kappelle

  • P1.120 Executive functions are associated with gait and balance in community-living elderly people

    M.B. van Iersel;R.P.C. Kessels;B.R. Bloem;M.G.M. Olde Rikkert

Frequent Co-Authors

Marcel G. M. Olde Rikkert
Marcel G. M. Olde Rikkert Radboud University
David G. Norris
David G. Norris Radboud University
Geert Jan Biessels
Geert Jan Biessels Utrecht University
Albert Postma
Albert Postma Utrecht University
Guillén Fernández
Guillén Fernández Radboud University
Edward H.F. de Haan
Edward H.F. de Haan Radboud University
Frans R.J. Verhey
Frans R.J. Verhey Maastricht University
Luciano Fasotti
Luciano Fasotti Radboud University
Dennis J.L.G. Schutter
Dennis J.L.G. Schutter Utrecht University
Albert P. Aldenkamp
Albert P. Aldenkamp Eindhoven University of Technology

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