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Joseph R. Duffy

Joseph R. Duffy

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Psychology 65 2865 2629 1652 1482 213 13705

Joseph R. Duffy publications per year

The chart shows the history of publications by Joseph R. Duffy between 1969 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Joseph R. Duffy published across 57 years, from 1969 to 2025, averaging 6.4 papers a year. Output peaked at 27 publications in 2024. 40 of the 367 publications appeared in the last two years.

No. of publications
5 10 15 20 25
Bar chart. Horizontal axis: year, 1969 to 2025. Vertical axis: number of publications, 0 to 27. Peak 27 publications in 2024. 1969: 1 publication 1970: 1 publication 1971: 2 publications 1972: 0 publications 1973: 1 publication 1974: 2 publications 1975: 1 publication 1976: 0 publications 1977: 1 publication 1978: 0 publications 1979: 0 publications 1980: 0 publications 1981: 0 publications 1982: 0 publications 1983: 0 publications 1984: 2 publications 1985: 3 publications 1986: 1 publication 1987: 3 publications 1988: 4 publications 1989: 1 publication 1990: 5 publications 1991: 8 publications 1992: 6 publications 1993: 4 publications 1994: 7 publications 1995: 3 publications 1996: 4 publications 1997: 8 publications 1998: 4 publications 1999: 6 publications 2000: 4 publications 2001: 6 publications 2002: 1 publication 2003: 12 publications 2004: 4 publications 2005: 7 publications 2006: 12 publications 2007: 3 publications 2008: 7 publications 2009: 6 publications 2010: 3 publications 2011: 3 publications 2012: 8 publications 2013: 12 publications 2014: 22 publications 2015: 18 publications 2016: 15 publications 2017: 4 publications 2018: 18 publications 2019: 8 publications 2020: 19 publications 2021: 22 publications 2022: 16 publications 2023: 19 publications 2024: 27 publications 2025: 13 publications
1969 2025

367 publications in total across all disciplines

View publications per year as a table
Joseph R. Duffy: publications per year, 1969 to 2025
Year Publications
1969 1
1970 1
1971 2
1972 0
1973 1
1974 2
1975 1
1976 0
1977 1
1978 0
1979 0
1980 0
1981 0
1982 0
1983 0
1984 2
1985 3
1986 1
1987 3
1988 4
1989 1
1990 5
1991 8
1992 6
1993 4
1994 7
1995 3
1996 4
1997 8
1998 4
1999 6
2000 4
2001 6
2002 1
2003 12
2004 4
2005 7
2006 12
2007 3
2008 7
2009 6
2010 3
2011 3
2012 8
2013 12
2014 22
2015 18
2016 15
2017 4
2018 18
2019 8
2020 19
2021 22
2022 16
2023 19
2024 27
2025 13
Total 367
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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.

No. of scientists
200 400 600
Bar chart with 69 bars. Horizontal axis: publications, 31–40 to 705+. Vertical axis: number of scientists, 0 to 736. Most scientists, 736, have 101–110 publications. The last bar groups every scientist with 705 publications or more. The highlighted bar, 211–220 publications, is where this scientist sits. 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
31–40 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.

View publications distribution as a table
Number of Psychology scientists by publication count, Research.com 2026 ranking edition. Based on 11,416 ranked scientists.
Publications Scientists This scientist
31–40 6
41–50 52
51–60 138
61–70 299
71–80 461
81–90 605
91–100 713
101–110 736
111–120 686
121–130 670
131–140 644
141–150 597
151–160 576
161–170 477
171–180 450
181–190 397
191–200 343
201–210 328
211–220 313 213
221–230 283
231–240 226
241–250 196
251–260 201
261–270 171
271–280 151
281–290 139
291–300 113
301–310 102
311–320 100
321–330 76
331–340 92
341–350 85
351–360 69
361–370 71
371–380 63
381–390 58
391–400 57
401–410 43
411–420 33
421–430 50
431–440 41
441–450 32
451–460 27
461–470 28
471–480 25
481–490 28
491–500 20
501–510 23
511–520 26
521–530 17
531–540 21
541–550 14
551–560 16
561–570 10
571–580 22
581–590 9
591–600 14
601–610 9
611–620 11
621–630 4
631–640 7
641–650 5
651–660 10
661–670 8
671–680 8
681–690 4
691–700 3
701–704 4
705+ 100
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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.

No. of scientists
200 400 600
Bar chart with 58 bars. Horizontal axis: D-Index, 30–31 to 144+. Vertical axis: number of scientists, 0 to 702. Most scientists, 702, have 32–33 D-Index. The last bar groups every scientist with 144 D-Index or more. The highlighted bar, 64–65 D-Index, is where this scientist sits. 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
30–31 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.

View D-Index distribution as a table
Number of Psychology scientists by D-index, Research.com 2026 ranking edition. Based on 11,416 ranked scientists.
D-Index Scientists This scientist
30–31 398
32–33 702
34–35 671
36–37 659
38–39 641
40–41 671
42–43 617
44–45 558
46–47 495
48–49 487
50–51 445
52–53 390
54–55 408
56–57 345
58–59 325
60–61 321
62–63 248
64–65 290 65
66–67 218
68–69 219
70–71 215
72–73 183
74–75 169
76–77 132
78–79 137
80–81 120
82–83 112
84–85 86
86–87 101
88–89 83
90–91 77
92–93 70
94–95 78
96–97 58
98–99 53
100–101 57
102–103 48
104–105 53
106–107 46
108–109 24
110–111 35
112–113 27
114–115 32
116–117 31
118–119 22
120–121 16
122–123 24
124–125 18
126–127 11
128–129 19
130–131 10
132–133 16
134–135 10
136–137 12
138–139 8
140–141 5
142–143 12
144+ 98
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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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