World's Best Scientists 2026 revealed!

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Psychology 77 1639 1469 185 170 280 24638
Neuroscience 78 1750 1593 181 164 328 25705
Medicine 78 17934 16858 1633 1563 333 25670

Alan J. Thomas publications per year

The chart shows the history of publications by Alan J. Thomas between 1980 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Alan J. Thomas published across 46 years, from 1980 to 2025, averaging 9.3 papers a year. Output peaked at 42 publications in 2020. 41 of the 426 publications appeared in the last two years.

No. of publications
10 20 30 40
Bar chart. Horizontal axis: year, 1980 to 2025. Vertical axis: number of publications, 0 to 42. Peak 42 publications in 2020. 1980: 1 publication 1981: 0 publications 1982: 0 publications 1983: 0 publications 1984: 0 publications 1985: 0 publications 1986: 0 publications 1987: 0 publications 1988: 0 publications 1989: 0 publications 1990: 1 publication 1991: 1 publication 1992: 1 publication 1993: 2 publications 1994: 1 publication 1995: 0 publications 1996: 0 publications 1997: 0 publications 1998: 0 publications 1999: 0 publications 2000: 3 publications 2001: 3 publications 2002: 7 publications 2003: 9 publications 2004: 8 publications 2005: 4 publications 2006: 5 publications 2007: 4 publications 2008: 5 publications 2009: 5 publications 2010: 8 publications 2011: 18 publications 2012: 7 publications 2013: 16 publications 2014: 17 publications 2015: 20 publications 2016: 16 publications 2017: 31 publications 2018: 29 publications 2019: 29 publications 2020: 42 publications 2021: 42 publications 2022: 26 publications 2023: 24 publications 2024: 23 publications 2025: 18 publications
1980 2025

426 publications in total across all disciplines

View publications per year as a table
Alan J. Thomas: publications per year, 1980 to 2025
Year Publications
1980 1
1981 0
1982 0
1983 0
1984 0
1985 0
1986 0
1987 0
1988 0
1989 0
1990 1
1991 1
1992 1
1993 2
1994 1
1995 0
1996 0
1997 0
1998 0
1999 0
2000 3
2001 3
2002 7
2003 9
2004 8
2005 4
2006 5
2007 4
2008 5
2009 5
2010 8
2011 18
2012 7
2013 16
2014 17
2015 20
2016 16
2017 31
2018 29
2019 29
2020 42
2021 42
2022 26
2023 24
2024 23
2025 18
Total 426
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Alan J. Thomas 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 Alan J. Thomas 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, 271–280 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: 280 publications — 85th percentile

85% 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
251–260 201
261–270 171
271–280 151 280
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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Alan J. Thomas 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 Alan J. Thomas 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, 76–77 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: 77 D-Index — 86th percentile

86% 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
66–67 218
68–69 219
70–71 215
72–73 183
74–75 169
76–77 132 77
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

Alan J. Thomas is affiliated with Newcastle University in the United Kingdom and has a research focus primarily in the field of Medicine, with substantial contributions to Psychiatry and Mental Health, Neurology, Physiology, Cognitive Neuroscience, and Molecular Biology.

Their recent published papers include:

  • Research criteria for the diagnosis of prodromal dementia with Lewy bodies, 2020, Neurology
  • Diagnosis and management of dementia with Lewy bodies: Fourth consensus report of the DLB Consortium, 2020, Newcastle University ePrints (Newcastle University)
  • Mild Cognitive Impairment: the Manchester consensus, 2020, Age and Ageing
  • Recalibrating the epigenetic clock: implications for assessing biological age in the human cortex, 2020, Brain
  • Differential levels of plasma biomarkers of neurodegeneration in Lewy body dementia, Alzheimer's disease, frontotemporal dementia and progressive supranuclear palsy, 2022, Journal of Neurology Neurosurgery & Psychiatry

The frequent co-authors working alongside Alan J. Thomas are:

  • John T. O'Brien
  • John-Paul Taylor
  • Paul C. Donaghy
  • Calum A. Hamilton
  • Michael Firbank

The venues where this scientist has most frequently published include:

  • Alzheimer s & Dementia
  • bioRxiv (Cold Spring Harbor Laboratory)
  • International Journal of Geriatric Psychiatry
  • Neurology
  • Brain

Alan J. Thomas has authored books in addition to journal articles, with a publication titled Poverty and Development released in 2021 through Channel View Publications eBooks.

The main topics addressed in their work span:

  • Dementia and Cognitive Impairment Research
  • Alzheimer's disease research and treatments
  • Parkinson's Disease Mechanisms and Treatments
  • Functional Brain Connectivity Studies
  • Epigenetics and DNA Methylation
  • Ginkgo biloba and Cashew Applications
  • Health disparities and outcomes

This profile highlights Alan J. Thomas's interdisciplinary research contributions that bridge clinical and biological studies, particularly focused on neurodegenerative diseases and cognitive impairment.

Best Publications

  • Diagnosis and management of dementia with Lewy bodies Fourth consensus report of the DLB Consortium

    Ian G. McKeith;Bradley F. Boeve;Dennis W. DIckson;Glenda Halliday

  • Research criteria for the diagnosis of prodromal dementia with Lewy bodies

    Ian G. McKeith;Tanis J. Ferman;Alan J. Thomas;Frédéric Blanc

  • Sertraline or mirtazapine for depression in dementia (HTA-SADD): a randomised, multicentre, double-blind, placebo-controlled trial

    Sube Banerjee;Jennifer Hellier;Michael Dewey;Renee Romeo

  • Common and distinct patterns of grey-matter volume alteration in major depression and bipolar disorder: evidence from voxel-based meta-analysis

    T Wise;J Radua;J Radua;E Via;N Cardoner

  • Depression and dementia: Cause, consequence or coincidence?

    Sophia Bennett;Alan J. Thomas

  • Ischemic basis for deep white matter hyperintensities in major depression: a neuropathological study.

    Alan J. Thomas;John T. O'Brien;Sue Davis;Clive Ballard

  • Genome sequencing analysis identifies new loci associated with Lewy body dementia and provides insights into its genetic architecture

    Ruth Chia;Marya S. Sabir;Sara Bandres-Ciga

  • Frontotemporal dementia and its subtypes: a genome-wide association study

    Raffaele Ferrari;Raffaele Ferrari;Dena G Hernandez;Dena G Hernandez;Michael A Nalls;Jonathan D Rohrer

  • Quetiapine and rivastigmine and cognitive decline in Alzheimer's disease: randomised double blind placebo controlled trial

    Clive Ballard;Marisa Margallo-Lana;Edmund Juszczak;Simon Douglas

  • Dementia with Lewy bodies: an update and outlook

    Tiago Fleming Outeiro;Tiago Fleming Outeiro;Tiago Fleming Outeiro;David J. Koss;Daniel Erskine;Lauren Walker

  • Increase in Interleukin-1β in Late-Life Depression

    Alan J. Thomas;Sue Davis;Christopher Morris;Elizabeth Jackson

  • Depression and vascular disease: what is the relationship?

    Alan J Thomas;Rajesh N Kalaria;John T O’Brien

  • Clinical practice with anti-dementia drugs: A revised (third) consensus statement from the British Association for Psychopharmacology

    John T. O'Brien;Clive Holmes;Matthew Jones;Roy Jones

  • Pharmacological Management of Lewy Body Dementia: A Systematic Review and Meta-Analysis

    Chris Stinton;Ian G. McKeith;John-Paul Taylor;Louise Lafortune

  • New evidence on the management of Lewy body dementia.

    John Paul Taylor;Ian G. McKeith;David J. Burn;Brad F. Boeve

  • Long term incidence of dementia, predictors of mortality and pathological diagnosis in older stroke survivors

    Louise M. Allan;Elise N. Rowan;Michael J. Firbank;Alan J. Thomas

  • Parietal white matter lesions in Alzheimer’s disease are associated with cortical neurodegenerative pathology, but not with small vessel disease

    Kirsty E. McAleese;Lauren Walker;Sophie Graham;Elisa L. J. Moya

  • Clinical prevalence of Lewy body dementia

    Joseph P. M. Kane;Ajenthan Surendranathan;Allison Bentley;Sally A. H. Barker

  • Study of the use of antidepressants for depression in dementia: the HTA-SADD trial - a multicentre, randomised, double-blind, placebo-controlled trial of the clinical effectiveness and cost-effectiveness of sertraline and mirtazapine

    S Banerjee;J Hellier;R Romeo;M Dewey

  • TDP-43 pathology in Alzheimer's disease, dementia with Lewy bodies and ageing.

    Kirsty E. McAleese;Lauren Walker;Daniel Erskine;Alan J. Thomas

  • Neuropathological correlates of late-life depression in older people

    Christos Tsopelas;Robert Stewart;George M. Savva;Carol Brayne

Frequent Co-Authors

John T. O'Brien
John T. O'Brien University of Cambridge
John-Paul Taylor
John-Paul Taylor Newcastle University
Ian G. McKeith
Ian G. McKeith Newcastle University
Johannes Attems
Johannes Attems Newcastle University
Michael J. Firbank
Michael J. Firbank Newcastle University
Christopher Morris
Christopher Morris Newcastle University
Sean J. Colloby
Sean J. Colloby Newcastle University
Clive Ballard
Clive Ballard University of Exeter
David J. Burn
David J. Burn Newcastle University
Paul T. Francis
Paul T. Francis University of Exeter

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