World's Best Scientists 2026 revealed!

D-Index & Metrics

Psychology

D-Index
75
Citations
20136
World Ranking
1792
National Ranking
1054

Gerald E. McClearn 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 Gerald E. McClearn 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: 182 publications — 63rd percentile

63% of scientists in this discipline score the same or lower.

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

Gerald E. McClearn 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 Gerald E. McClearn 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: 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.

Overview

Gerald E. McClearn is affiliated with Pennsylvania State University in the United States.

There are no records of recent papers, frequent co-authors, publication venues, book publications, main fields or subfields of study, main topics of work, or awards associated with this scientist in the available data.

Best Publications

  • The body-mass index of twins who have been reared apart.

    Albert J. Stunkard;Jennifer R. Harris;Nancy L. Pedersen;Gerald E. McClearn

  • Substantial genetic influence on cognitive abilities in twins 80 or more years old

    Gerald E. McClearn;Boo Johansson;Stig Berg;Nancy L. Pedersen

  • High, usual and impaired functioning in community-dwelling older men and women: Findings from the MacArthur Foundation Research Network on successful aging

    Lisa F. Berkman;Teresa E. Seeman;Marilyn Albert;Dan Blazer

  • Genetic and environmental influences on serum lipid levels in twins.

    Debra A. Heller;Ulf de Faire;Nancy L. Pedersen;Nancy L. Pedersen;Gosta Dahlen

  • Nature, Nurture, and Psychology

    Robert Plomin;Gerald E. McClearn

  • A Quantitative Genetic Analysis of Cognitive Abilities During the Second Half of the Life Span

    Nancy L. Pedersen;Robert Plomin;J. R. Nesselroade;G. E. McClearn

  • Gender and Health A Study of Older Unlike-Sex Twins

    Carol H Gold;Bo Malmberg;Gerald E McClearn;Nancy L Pedersen

  • Optimism, pessimism and mental health: A twin/adoption analysis

    Robert Plomin;Michael F. Scheier;C. S. Bergeman;C. S. Bergeman;Nancy L. Pedersen

  • The Swedish Adoption Twin Study of Aging: an update.

    Nancy L Pedersen;Gerald McClearn;R Plomin;J Nesselroade

  • Genetic and environmental effects on openness to experience, agreeableness, and conscientiousness: an adoption/twin study

    C. S. Bergeman;Heather M. Chipuer;Robert Plomin;Nancy L. Pedersen;Nancy L. Pedersen

  • What matters for life satisfaction in the oldest-old?

    A I Berg;Linda Hassing;G. E McClearn;Boo Johansson

  • Telomere length predicts survival independent of genetic influences.

    Stephanie L. Bakaysa;Lorelei A. Mucci;Lorelei A. Mucci;P. Eline Slagboom;Dorret I. Boomsma

  • Comorbid type 2 diabetes mellitus and hypertension exacerbates cognitive decline: evidence from a longitudinal study

    Linda B. Hassing;Scott M. Hofer;Sven E. Nilsson;Stig Berg

  • Neuroticism, extraversion, and related traits in adult twins reared apart and reared together.

    Nancy L. Pedersen;Robert Plomin;Gerald E. McClearn;Lars Friberg

  • The Effect of Genetic Factors for Longevity: A Comparison of Identical and Fraternal Twins in the Swedish Twin Registry

    Birgit Ljungquist;Stig Berg;Jan Lanke;Gerald E. McClearn

  • Genetic influence on life events during the last half of the life span.

    Robert Plomin;Paul Lichtenstein;Nancy L. Pedersen;Gerald E. McClearn

  • Biomarkers of aging: From primitive organisms to humans

    Robert N. Butler;Richard Sprott;Huber Warner;Jeffrey Bland

  • Diabetes mellitus is a risk factor for vascular dementia, but not for Alzheimer's disease: a population-based study of the oldest old.

    Linda B. Hassing;Boo Johansson;Sven E. Nilsson;Stig Berg

  • Social dominance and darwinian fitness in the laboratory mouse.

    J. C. DeFries;G. E. McClearn

  • Genetic influence on childhood family environment perceived retrospectively from the last half of the life span.

    Robert Plomin;G. E. McClearn;Nancy L. Pedersen;John R. Nesselroade

Frequent Co-Authors

Robert Plomin
Robert Plomin King's College London
Nancy L. Pedersen
Nancy L. Pedersen Karolinska Institute
Boo Johansson
Boo Johansson University of Gothenburg
Stig Berg
Stig Berg Jönköping University
John R. Nesselroade
John R. Nesselroade University of Virginia
Scott M. Hofer
Scott M. Hofer University of Victoria
Stephen A. Petrill
Stephen A. Petrill The Ohio State University
Peter McGuffin
Peter McGuffin King's College London
Lee A. Thompson
Lee A. Thompson Case Western Reserve University
Michael John Owen
Michael John Owen Cardiff University

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