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D-Index & Metrics

Psychology

D-Index
54
Citations
13772
World Ranking
4533
National Ranking
2519

Ronald M. Ruff 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 Ronald M. Ruff 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: 105 publications — 23rd percentile

23% of scientists in this discipline score the same or lower.

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

Ronald M. Ruff 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 Ronald M. Ruff 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: 54 D-Index — 61st percentile

61% of scientists in this discipline score the same or lower.

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

Overview

Ronald M. Ruff is affiliated with the University of California, San Francisco in the United States. Their research spans several fields including Engineering and Medicine, with a focus on subfields such as Computational Mechanics, Epidemiology, and Mechanical Engineering.

The scientist's recent publication is entitled "Model Based Process Development and Operation of a Fluid Bed Granulation Unit to Manufacture Pharmaceutical Tablets," published in 2024 in the journal Systems and Control Transactions.

Ronald M. Ruff's main topics of work include:

  • Traumatic Brain Injury Research
  • Granular flow and fluidized beds
  • Cyclone Separators and Fluid Dynamics
  • Mineral Processing and Grinding

They have collaborated frequently with several coauthors, including:

  • Paul M. Richards
  • Salvador García Muñoz
  • Maitraye Sen
  • Shashwat Gupta

Their scholarly output has appeared in venues such as:

  • Systems and Control Transactions

Best Publications

  • Neurobehavioral outcome following minor head injury : a three-center study

    Harvey S. Levin;Steven Mattis;Ronald M. Ruff;Howard M. Eisenberg

  • Symptom validity assessment: practice issues and medical necessity NAN policy & planning committee.

    Shane S. Bush;Ronald M. Ruff;Alexander I. Tröster;Jeffrey T. Barth

  • A Cognitive Training Program Based on Principles of Brain Plasticity: Results from the Improvement in Memory with Plasticity-based Adaptive Cognitive Training (IMPACT) Study

    Glenn E. Smith;Patricia Housen;Kristine Yaffe;Ronald Ruff

  • Benton Controlled Oral Word Association Test: reliability and updated norms

    R.M. Ruff;R.H. Light;S.B. Parker;H.S. Levin

  • Rehabilitation of persons with traumatic brain injury

    K. T. Ragnarsson;W. R. Clarke;J. R. Daling;S. L. Garber

  • Recommendations for diagnosing a mild traumatic brain injury: a National Academy of Neuropsychology education paper.

    Ronald M. Ruff;Grant L. Iverson;Jeffrey T. Barth;Shane S. Bush

  • Computerized neuropsychological assessment devices: joint position paper of the American Academy of Clinical Neuropsychology and the National Academy of Neuropsychology.

    Russell M. Bauer;Grant L. Iverson;Alison N. Cernich;Laurence M. Binder

  • The Psychological Construct of Word Fluency

    R.M. Ruff;R.M. Ruff;R.H. Light;S.B. Parker;H.S. Levin

  • Neurobehavioral outcome 1 year after severe head injury. Experience of the Traumatic Coma Data Bank.

    Levin Hs;Gary He;Eisenberg Hm;Ruff Rm

  • Two decades of advances in understanding of mild traumatic brain injury.

    Ronald Ruff

  • The ruff figural fluency test: A normative study with adults

    Ronald M. Ruff;Rudolph H. Light;Randall W. Evans

  • Miserable minority: Emotional risk factors that influence the outcome of a mild traumatic brain injury.

    Ronald M. Ruff;Lorraine Camenzuli;Jonathan Mueller

  • Selected cases of poor outcome following a minor brain trauma: Comparing neuropsychological and positron emission tomography assessment

    Ronald M. Ruff;J. A. Crouch;A. I. Tröster;L. F. Marshall

  • Neuropsychological evaluation in the diagnosis and management of sports-related concussion

    Rosemarie Scolaro Moser;Grant L. Iverson;Ruben J. Echemendia;Mark R. Lovell

  • Cognitive Screening Tests Versus Comprehensive Neuropsychological Test Batteries: A National Academy of Neuropsychology Education Paper†.

    Tresa M Roebuck-Spencer;Tannahill Glen;Antonio E Puente;Robert L Denney

  • Self-rating versus neuropsychological performance of moderate versus severe head-injured patients.

    Charles C. Allen;Ronald M. Ruff

  • Vegetative state after closed-head injury. A Traumatic Coma Data Bank Report.

    Harvey S. Levin;Christy Saydjari;Howard M. Eisenberg;Mary Foulkes

  • Improvement in Memory with Plasticity-Based Adaptive Cognitive Training: Results of the 3-Month Follow-Up

    Elizabeth M. Zelinski;Laila M. Spina;Kristine Yaffe;Ronald Ruff

  • Computer-assisted attention retraining in head-injured individuals: a controlled efficacy study of an outpatient program.

    Hendrik Niemann;Ronald M. Ruff;Christine A. Baser

  • Are the subjective complaints of traumatically brain injured patients reliable

    Robert J. Sbordone;Gregory D. Seyranian;Ronald M. Ruff

  • Neurobehavioral outcome following minor head injury: A three center study

    Nathaniel H. Mayer;Janet F. Haas;H S Levin;S Mattis

Frequent Co-Authors

Jeffrey T. Barth
Jeffrey T. Barth University of Virginia
Lawrence F. Marshall
Lawrence F. Marshall University of California, San Diego
Grant L. Iverson
Grant L. Iverson Harvard University
John A. Jane
John A. Jane University of Virginia Health System
Anthony Marmarou
Anthony Marmarou Virginia Commonwealth University Medical Center
Howard M. Eisenberg
Howard M. Eisenberg University of Maryland, Baltimore
Alexander I. Tröster
Alexander I. Tröster Barrow Neurological Institute
Cecil R. Reynolds
Cecil R. Reynolds Texas A&M University
Jerry J. Sweet
Jerry J. Sweet NorthShore University HealthSystem
William Perry
William Perry University of California, San Diego

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