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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Psychology 61 3398 3133 1917 1728 246 13311

Leonard W. Poon publications per year

The chart shows the history of publications by Leonard W. Poon between 1971 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Leonard W. Poon published across 55 years, from 1971 to 2025, averaging 5.1 papers a year. Output peaked at 22 publications in 2011. 4 of the 279 publications appeared in the last two years.

No. of publications
5 10 15 20
Bar chart. Horizontal axis: year, 1971 to 2025. Vertical axis: number of publications, 0 to 22. Peak 22 publications in 2011. 1971: 2 publications 1972: 0 publications 1973: 0 publications 1974: 1 publication 1975: 1 publication 1976: 1 publication 1977: 1 publication 1978: 4 publications 1979: 1 publication 1980: 5 publications 1981: 2 publications 1982: 5 publications 1983: 2 publications 1984: 1 publication 1985: 4 publications 1986: 3 publications 1987: 0 publications 1988: 3 publications 1989: 12 publications 1990: 3 publications 1991: 1 publication 1992: 6 publications 1993: 4 publications 1994: 6 publications 1995: 4 publications 1996: 9 publications 1997: 7 publications 1998: 9 publications 1999: 4 publications 2000: 2 publications 2001: 4 publications 2002: 3 publications 2003: 2 publications 2004: 2 publications 2005: 2 publications 2006: 8 publications 2007: 9 publications 2008: 6 publications 2009: 5 publications 2010: 15 publications 2011: 22 publications 2012: 17 publications 2013: 7 publications 2014: 11 publications 2015: 5 publications 2016: 13 publications 2017: 8 publications 2018: 12 publications 2019: 6 publications 2020: 5 publications 2021: 5 publications 2022: 3 publications 2023: 2 publications 2024: 3 publications 2025: 1 publication
1971 2025

279 publications in total across all disciplines

View publications per year as a table
Leonard W. Poon: publications per year, 1971 to 2025
Year Publications
1971 2
1972 0
1973 0
1974 1
1975 1
1976 1
1977 1
1978 4
1979 1
1980 5
1981 2
1982 5
1983 2
1984 1
1985 4
1986 3
1987 0
1988 3
1989 12
1990 3
1991 1
1992 6
1993 4
1994 6
1995 4
1996 9
1997 7
1998 9
1999 4
2000 2
2001 4
2002 3
2003 2
2004 2
2005 2
2006 8
2007 9
2008 6
2009 5
2010 15
2011 22
2012 17
2013 7
2014 11
2015 5
2016 13
2017 8
2018 12
2019 6
2020 5
2021 5
2022 3
2023 2
2024 3
2025 1
Total 279
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Leonard W. Poon 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 Leonard W. Poon 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, 241–250 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: 246 publications — 80th percentile

80% 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
221–230 283
231–240 226
241–250 196 246
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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Leonard W. Poon 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 Leonard W. Poon 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, 60–61 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: 61 D-Index — 71st percentile

71% 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 61
62–63 248
64–65 290
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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Overview

Leonard W. Poon is a researcher affiliated with the University of Georgia in the United States. Their work primarily focuses on the fields of Medicine and Psychology, with specific attention to subfields such as Psychiatry and Mental Health, Neuropsychology and Physiological Psychology, Physiology, Health, Toxicology and Mutagenesis, and general Health research.

The main topics covered in Poon's research include Dementia and Cognitive Impairment Research, Aging and Gerontology Research, Health, Environment, and Cognitive Aging, Health Disparities and Outcomes, Frailty in Older Adults, Intergenerational Family Dynamics and Caregiving, and Biochemical Effects in Animals.

Poon has contributed to a range of academic publications. Frequent co-authors in their work include Peter Martin, Bradley J. Willcox, Gina Lee, Elizabeth J. Johnson, and Kamal Masaki.

Among the publication venues where Poon has regularly published are Innovation in Aging, The Journals of Gerontology Series A, Alzheimer's & Dementia, Frontiers in Nutrition, and Maturitas.

Significant recent papers authored or co-authored by Leonard W. Poon include:

  • Cognition, function, and prevalent dementia in centenarians and near-centenarians: An individual participant data (IPD) meta-analysis of 18 studies, 2022, Alzheimer's & Dementia
  • Carotenoid-Rich Brain Nutrient Pattern Is Positively Correlated With Higher Cognition and Lower Depression in the Oldest Old With No Dementia, 2021, Frontiers in Nutrition
  • Novel Functional, Health, and Genetic Determinants of Cognitive Terminal Decline: Kuakini Honolulu Heart Program/Honolulu-Asia Aging Study, 2021, The Journals of Gerontology Series A
  • Factor analysis of the Cognitive Abilities Screening Instrument: Kuakini Honolulu-Asia Aging Study, 2020, International Psychogeriatrics
  • Healthy aging among centenarians and near-centenarians: Findings from the Georgia Centenarian Study, 2024, Maturitas

Best Publications

  • Things learned in early adulthood are remembered best.

    David C. Rubin;Tamara A. Rahhal;Leonard W. Poon

  • The Information-Loss Model: A Mathematical Theory of Age-Related Cognitive Slowing

    Joel Myerson;Sandra Hale;David Wagstaff;Leonard W. Poon

  • Age and the complexity hypothesis.

    John Cerella;Leonard W. Poon;Diane M. Williams

  • Effects of Structure Strategy Training and Signaling on Recall of Text.

    Bonnie J. F. Meyer;Leonard W. Poon

  • Defining Successful Aging: A Tangible or Elusive Concept?

    Peter Martin;Norene Kelly;Boaz Kahana;Eva Kahana

  • Everyday cognition in adulthood and late life

    Leonard W. Poon;David C. Rubin;Barbara A. Wilson

  • Differences in human memory with aging: Nature, causes, and clinical implications.

    Leonard W. Poon

  • Speed of Processing in Normal Aging: Effects of Speech Rate, Linguistic Structure, and Processing Time

    Arthur Wingfield;Leonard W. Poon;Linda Lombardi;David Lowe

  • Relationship between Serum and Brain Carotenoids, α-Tocopherol, and Retinol Concentrations and Cognitive Performance in the Oldest Old from the Georgia Centenarian Study.

    Elizabeth J. Johnson;Rohini Vishwanathan;Mary Ann Johnson;Dorothy B. Hausman

  • A Model of Loneliness in Older Adults

    Bronwyn S. Fees;Peter Martin;Leonard W. Poon

  • Handbook for clinical memory assessment of older adults

    Leonard W. Poon;Thomas Crook;Kenneth L. Davis;Carl Eisdorfer

  • The Relationship between Physical Health and Psychological Well-Being among Oldest-Old Adults.

    Jinmyoung Cho;Peter Martin;Jennifer A. Margrett;Maurice MacDonald

  • The Alzheimer's disease activities of daily living international scale (ADL-IS).

    Barry Reisberg;Sanford Finkel;John Overall;Norbert Schmidt-Gollas

  • Effects of labeling techniques on memory and comprehension of prescription information in young and old adults.

    Roger W. Morrell;Denise C. Park;Leonard W. Poon

  • Aging and Retrieval of Words in Semantic Memory

    Unknown

  • Successful Aging and Subjective Well-Being Among Oldest-Old Adults

    Jinmyoung Cho;Peter Martin;Leonard W. Poon

  • The Georgia Centenarian Study

    Leonard W. Poon;Gloria M. Clayton;Peter Martin;Mary Ann Johnson

  • Happiness and congruence in older adulthood: a structural model of life satisfaction.

    A J Bishop;P Martin;L Poon

  • Methodological Considerations in Studying Centenarians: Lessons Learned From the Georgia Centenarian Studies.

    Leonard W Poon;Michal Jazwinski;Robert C Green;John L Woodard

  • Quality of Instructions on Prescription Drug Labels: Effects on Memory and Comprehension in Young and Old Adults

    Roger W. Morrell;Denise C. Park;Leonard W. Poon

  • Metamemorial predictors of memory performance in young and older adults.

    John C. Cavanaugh;Leonard W. Poon

  • Cognitive Functioning in Centenarians A Coordinated Analysis of Results From Three Countries

    Bo Hagberg;Betty Bauer Alfredson;Leonard W. Poon;Akira Homma

Frequent Co-Authors

Peter Martin
Peter Martin Iowa State University
Adam Davey
Adam Davey University of Delaware
John L. Woodard
John L. Woodard Wayne State University
Ilene C. Siegler
Ilene C. Siegler Duke University
Robert C. Green
Robert C. Green Brigham and Women's Hospital
L. Stephen Miller
L. Stephen Miller University of Georgia
Marla Gearing
Marla Gearing Emory University
Kamal Masaki
Kamal Masaki University of Hawaii at Manoa
Barbara A. Wilson
Barbara A. Wilson St George's, University of London
David C. Rubin
David C. Rubin Duke University

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