World's Best Scientists 2026 revealed!
Joseph R. Duffy

Joseph R. Duffy

D-Index & Metrics

Psychology

D-Index
65
Citations
13705
World Ranking
2865
National Ranking
1652

Joseph R. Duffy 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 Joseph R. Duffy 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: 213 publications — 73rd percentile

73% of scientists in this discipline score the same or lower.

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

Joseph R. Duffy 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 Joseph R. Duffy 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: 65 D-Index — 76th percentile

76% of scientists in this discipline score the same or lower.

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

Research.com Recognitions

  • 1958 - Fellow of the American Association for the Advancement of Science (AAAS)

Overview

Joseph R. Duffy is affiliated with the Mayo Clinic in the United States. Their research primarily spans the fields of medicine and neuroscience, with a significant focus on cognitive neuroscience, neurology, physiology, psychiatry and mental health, as well as developmental and educational psychology.

The scientist's work concentrates on several main topics, including:

  • Neurobiology of language and bilingualism
  • Language development and disorders
  • Voice and speech disorders
  • Dementia and cognitive impairment research
  • Parkinson's disease mechanisms and treatments
  • Advanced neuroimaging techniques and applications
  • Alzheimer's disease research and treatments

Notable recent papers authored or coauthored by Joseph R. Duffy include:

  • "Management of functional communication, swallowing, cough and related disorders: consensus recommendations for speech and language therapy," 2021, Journal of Neurology Neurosurgery & Psychiatry
  • "Primary progressive apraxia of speech: from recognition to diagnosis and care," 2020, Aphasiology
  • "A molecular pathology, neurobiology, biochemical, genetic and neuroimaging study of progressive apraxia of speech," 2021, Nature Communications
  • "Rehabilitation Treatment Specification System: Methodology to Identify and Describe Unique Targets and Ingredients," 2020, Archives of Physical Medicine and Rehabilitation
  • "The Apraxia of Speech Rating Scale: Reliability, Validity, and Utility," 2023, American Journal of Speech-Language Pathology

Frequent coauthors collaborating with Joseph R. Duffy are:

  • Keith A. Josephs
  • Rene L. Utianski
  • Heather M. Clark
  • Hugo Botha
  • Mary M. Machulda

The main venues where Joseph R. Duffy's work is published include:

  • Neurology
  • Alzheimer's & Dementia
  • American Journal of Speech-Language Pathology
  • Parkinsonism & Related Disorders
  • Journal of Speech Language and Hearing Research

Joseph R. Duffy was recognized as a Fellow of the American Association for the Advancement of Science (AAAS) in 1958.

Best Publications

  • Clinicopathological and imaging correlates of progressive aphasia and apraxia of speech.

    Keith A. Josephs;Joseph R. Duffy;Edyth A. Strand;Jennifer L. Whitwell

  • Clinicopathologic analysis of frontotemporal and corticobasal degenerations and PSP

    K. A. Josephs;R. C. Petersen;D. S. Knopman;B. F. Boeve

  • Characterizing a neurodegenerative syndrome: primary progressive apraxia of speech

    Keith Anthony Josephs;Joseph R Duffy;Edythe Strand;Mary Margaret Machulda

  • Acoustic studies of dysarthric speech: methods, progress, and potential.

    Ray D Kent;Gary Weismer;Jane F Kent;Houri K Vorperian

  • MRI and neuropsychological differences in early- and late-life-onset geriatric depression

    S. Salloway;P. Malloy;R. Kohn;E. Gillard

  • Apathy: a treatable syndrome.

    R S Marin;B S Fogel;J Hawkins;J Duffy

  • Weight gain prevention and smoking cessation: cautionary findings.

    S M Hall;C D Tunstall;K L Vila;J Duffy

  • The apraxia of speech rating scale: A tool for diagnosis and description of apraxia of speech

    Edythe A. Strand;Joseph R. Duffy;Heather M. Clark;Keith Josephs

  • Awake craniotomy for aggressive resection of primary gliomas located in eloquent brain.

    Fredric B. Meyer;Lisa M. Bates;Stephan J. Goerss;Jonathan A. Friedman

  • Treatment guidelines for acquired apraxia of speech: a synthesis and evaluation of the evidence

    Julie L. Wambaugh;Joseph R. Duffy;Malcolm R. McNeil;Donald A. Robin

  • Atypical progressive supranuclear palsy underlying progressive apraxia of speech and nonfluent aphasia

    Keith A. Josephs;B. F. Boeve;J. R. Duffy;G. E. Smith

  • Apraxia of speech and nonfluent aphasia: a new clinical marker for corticobasal degeneration and progressive supranuclear palsy.

    Keith A Josephs;Joseph R Duffy

  • Speech, Prosody, and Voice Characteristics of a Mother and Daughter With a 7;13 Translocation Affecting FOXP2

    Lawrence D. Shriberg;Kirrie J. Ballard;J. Bruce Tomblin;Joseph R. Duffy

  • Functional movement disorders: successful treatment with a physical therapy rehabilitation protocol.

    Kathrin Czarnecki;Jeffrey M. Thompson;Richard Seime;Yonas E. Geda

  • Syndromes dominated by apraxia of speech show distinct characteristics from agrammatic PPA

    Keith A. Josephs;Joseph R. Duffy;Edythe A. Strand;Mary M. Machulda

  • Cognitive screening instruments in neuropsychiatry: A report of the Committee on Research of the American Neuropsychiatric Association

    P F Malloy;J L Cummings;C E Coffey;J Duffy

  • Quantitative application of the primary progressive aphasia consensus criteria

    Meredith R. Wicklund;Joseph R. Duffy;Edythe A. Strand;Mary M. Machulda

  • Voice dysfunction in dysarthria: application of the Multi-Dimensional Voice Program.

    R. D. Kent;H. K. Vorperian;J. F. Kent;Joseph R Duffy

  • Platelet derived growth factor and fibroblast growth factor basic levels in the vitreous of patients with vitreoretinal disorders

    Cassidy L;Barry P;Shaw C;Duffy J

  • Progressive aphasia secondary to Alzheimer disease vs FTLD pathology

    Keith A. Josephs;Jennifer L. Whitwell;Joseph R. Duffy;Wendy A. Vanvoorst

  • Apraxia of speech in degenerative neurologic disease

    Joseph R. Duffy

Frequent Co-Authors

Keith A. Josephs
Keith A. Josephs Mayo Clinic
Mary M. Machulda
Mary M. Machulda Mayo Clinic
Edythe A. Strand
Edythe A. Strand Mayo Clinic
Clifford R. Jack
Clifford R. Jack Mayo Clinic
Val J. Lowe
Val J. Lowe Mayo Clinic
Ronald C. Petersen
Ronald C. Petersen University of Pennsylvania
David S. Knopman
David S. Knopman Mayo Clinic

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