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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Psychology 75 1815 1635 1067 939 347 16535

John Gunstad publications per year

The chart shows the history of publications by John Gunstad between 1996 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. John Gunstad published across 30 years, from 1996 to 2025, averaging 13.2 papers a year. Output peaked at 41 publications in 2015. 19 of the 397 publications appeared in the last two years.

No. of publications
10 20 30 40
Bar chart. Horizontal axis: year, 1996 to 2025. Vertical axis: number of publications, 0 to 41. Peak 41 publications in 2015. 1996: 1 publication 1997: 0 publications 1998: 0 publications 1999: 2 publications 2000: 3 publications 2001: 2 publications 2002: 3 publications 2003: 1 publication 2004: 3 publications 2005: 8 publications 2006: 16 publications 2007: 13 publications 2008: 16 publications 2009: 16 publications 2010: 14 publications 2011: 23 publications 2012: 25 publications 2013: 37 publications 2014: 40 publications 2015: 41 publications 2016: 17 publications 2017: 18 publications 2018: 12 publications 2019: 9 publications 2020: 16 publications 2021: 13 publications 2022: 12 publications 2023: 17 publications 2024: 12 publications 2025: 7 publications
1996 2025

397 publications in total across all disciplines

View publications per year as a table
John Gunstad: publications per year, 1996 to 2025
Year Publications
1996 1
1997 0
1998 0
1999 2
2000 3
2001 2
2002 3
2003 1
2004 3
2005 8
2006 16
2007 13
2008 16
2009 16
2010 14
2011 23
2012 25
2013 37
2014 40
2015 41
2016 17
2017 18
2018 12
2019 9
2020 16
2021 13
2022 12
2023 17
2024 12
2025 7
Total 397
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John Gunstad 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 John Gunstad 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, 341–350 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: 347 publications — 91st percentile

91% 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
281–290 139
291–300 113
301–310 102
311–320 100
321–330 76
331–340 92
341–350 85 347
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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John Gunstad 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 John Gunstad 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, 74–75 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: 75 D-Index — 85th percentile

85% 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 75
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

John Gunstad is a researcher affiliated with Kent State University in the United States. Their primary field of study is Medicine, with significant contributions spanning various subfields including Physiology, Clinical Psychology, Psychiatry and Mental Health, Cognitive Neuroscience, and Public Health, Environmental and Occupational Health.

The research topics covered by Gunstad include:

  • Diet and metabolism studies
  • Dementia and cognitive impairment research
  • Bariatric surgery and outcomes
  • Gut microbiota and health
  • Neurobiology of language and bilingualism
  • Traumatic brain injury research
  • Probiotics and fermented foods

John Gunstad has contributed to numerous publications with a focus on cognitive and metabolic health. Their recent papers include:

  • The gut microbiome, mild cognitive impairment, and probiotics: A randomized clinical trial in middle-aged and older adults, 2022, Clinical Nutrition
  • Randomized Clinical Trial Examining the Impact of Lactobacillus rhamnosus GG Probiotic Supplementation on Cognitive Functioning in Middle-aged and Older Adults, 2020, Neuropsychiatric Disease and Treatment
  • Cognitive dysfunction is a risk factor for overeating and obesity, 2020, American Psychologist
  • Using Automatic Assessment of Speech Production to Predict Current and Future Cognitive Function in Older Adults, 2020, Journal of Geriatric Psychiatry and Neurology
  • Identifying mechanisms that predict weight trajectory after bariatric surgery: rationale and design of the biobehavioral trial, 2020, Surgery for Obesity and Related Diseases

Frequent collaborators with Gunstad include:

  • Victoria Sanborn
  • Ross D. Crosby
  • Kristine J. Steffen
  • James E. Mitchell
  • Colleen Mistler

The researcher has published extensively in several scholarly venues. The most frequent publication venues include:

  • Surgery for Obesity and Related Diseases
  • Archives of Clinical Neuropsychology
  • Medicine & Science in Sports & Exercise
  • Journal of the International Neuropsychological Society
  • Applied Neuropsychology Adult

Best Publications

  • Elevated body mass index is associated with executive dysfunction in otherwise healthy adults.

    John Gunstad;Robert H. Paul;Ronald A. Cohen;David F. Tate

  • Early Life Stress and Morphometry of the Adult Anterior Cingulate Cortex and Caudate Nuclei

    Ronald A. Cohen;Stuart Grieve;Karin F. Hoth;Robert H. Paul

  • Axis I Comorbidity in Body Dysmorphic Disorder

    John Gunstad;Katharine A Phillips

  • Longitudinal examination of obesity and cognitive function: results from the Baltimore longitudinal study of aging.

    John Gunstad;April Lhotsky;Carrington Rice Wendell;Luigi Ferrucci

  • Obesity is associated with memory deficits in young and middle-aged adults.

    John Gunstad;R. H. Paul;R. A. Cohen;D. F. Tate

  • "Diagnosis Threat": the effect of negative expectations on cognitive performance in head injury.

    Julie A Suhr;John Gunstad

  • Category and letter verbal fluency across the adult lifespan: relationship to EEG theta power

    Adam M. Brickman;Robert H. Paul;Ronald A. Cohen;Leanne M. Williams

  • “Expectation as etiology” versus “the good old days”: Postconcussion syndrome symptom reporting in athletes, headache sufferers, and depressed individuals

    John Gunstad;Julie A. Suhr

  • Relationship between body mass index and brain volume in healthy adults.

    John Gunstad;Robert H. Paul;Ronald A. Cohen;David F. Tate

  • Obesity is associated with reduced white matter integrity in otherwise healthy adults.

    Kelly M. Stanek;Stuart M. Grieve;Stuart M. Grieve;Adam M. Brickman;Mayuresh S. Korgaonkar

  • The Relationship Between Frontal Gray Matter Volume and Cognition Varies Across the Healthy Adult Lifespan

    Molly E. Zimmerman;Adam M. Brickman;Robert H. Paul;Stuart M. Grieve

  • Further exploration of the effect of “diagnosis threat” on cognitive performance in individuals with mild head injury

    Julie A. Suhr;John Gunstad

  • Improved memory function 12 weeks after bariatric surgery.

    John Gunstad;John Gunstad;Gladys Strain;Michael J. Devlin;Rena Wing

  • Cognitive function and decline in obesity.

    Kelly Stanek Sellbom;John Gunstad

  • The METER: a brief, self-administered measure of health literacy.

    Katherine A. Rawson;John Gunstad;John Gunstad;Joel Hughes;Joel Hughes;Mary Beth Spitznagel;Mary Beth Spitznagel

  • Cognitive function after bariatric surgery: evidence for improvement 3 years after surgery

    Michael L. Alosco;Rachel Galioto;Mary Beth Spitznagel;Mary Beth Spitznagel;Gladys Strain

  • Exposure to early life trauma is associated with adult obesity.

    John Gunstad;Robert H. Paul;Mary Beth Spitznagel;Ronald A. Cohen

  • Evidence of executive dysfunction in extremely obese adolescents: a pilot study.

    Kristine Lee Lokken;Abbe Gayle Boeka;Heather M. Austin;John Gunstad

  • Endothelial Function and White Matter Hyperintensities in Older Adults With Cardiovascular Disease

    Karin F. Hoth;David F. Tate;Athena Poppas;Daniel E. Forman;Daniel E. Forman

  • A preliminary examination of gut microbiota, sleep, and cognitive flexibility in healthy older adults.

    Jason R. Anderson;Ian Carroll;M. Andrea Azcarate-Peril;Amber D. Rochette

  • Serum brain-derived neurotrophic factor is associated with cognitive function in healthy older adults.

    John Gunstad;Andreana Benitez;Joseph Smith;Ellen Glickman

Frequent Co-Authors

Mary Beth Spitznagel
Mary Beth Spitznagel Kent State University
Ronald A. Cohen
Ronald A. Cohen University of Florida
Joel W. Hughes
Joel W. Hughes Kent State University
Michael L. Alosco
Michael L. Alosco Boston University
Lawrence H. Sweet
Lawrence H. Sweet University of Georgia
James E. Mitchell
James E. Mitchell University of North Dakota
Ross D. Crosby
Ross D. Crosby University of North Dakota
Evian Gordon
Evian Gordon University of Sydney
Angela L. Jefferson
Angela L. Jefferson Vanderbilt University Medical Center
Naftali Raz
Naftali Raz Stony Brook University

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