World's Best Scientists 2026 revealed!

D-Index & Metrics

Psychology

D-Index
70
Citations
17144
World Ranking
2286
National Ranking
254

John T. Manning 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 T. Manning 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: 144 publications — 46th percentile

46% of scientists in this discipline score the same or lower.

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

John T. Manning 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 T. Manning 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: 70 D-Index — 81st percentile

81% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 144 D-Index or more.

Overview

John T. Manning is affiliated with Swansea University in the United Kingdom. Their research primarily spans the fields of Biochemistry, Genetics and Molecular Biology, and Medicine, with a focus on several subfields including Molecular Biology, Endocrinology, Diabetes and Metabolism, Genetics, Pediatrics, Perinatology and Child Health, and Urology.

The main topics addressed in their work include Sexual Differentiation and Disorders, Hormonal and reproductive studies, Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities, Urological Disorders and Treatments, Demographic Trends and Gender Preferences, Urologic and reproductive health conditions, and Birth, Development, and Health.

Some notable recent papers authored or co-authored by John T. Manning are:

  • Digit ratio (2D:4D) and its relationship to foetal and maternal sex steroids: A mini-review (2023), published in Early Human Development
  • Understanding COVID-19: Digit ratio (2D:4D) and sex differences in national case fatality rates (2020), published in Early Human Development
  • The effects of sex, nation, ethnicity, age and self-reported pubertal development on participant-measured right-left 2D:4D (Dr-l) in the BBC internet study (2022), published in Journal of Biosocial Science

Among the frequent co-authors collaborating with John T. Manning are Bernhard Fink, Anna Kasielska-Trojan, Bogusław Antoszewski, Robert Trivers, and Laura Mason. These collaborations have contributed to research outputs across various topics connected to sex differences and developmental biology.

The scientist's work has been commonly published in venues such as Early Human Development, Scientific Reports, Journal of Biosocial Science, American Journal of Human Biology, and Frontiers in Endocrinology. Early Human Development stands out with the highest number of published papers by Manning.

Best Publications

  • 2nd to 4th digit ratios, fetal testosterone and estradiol.

    S. Lutchmaya;S. Baron-Cohen;P. Raggatt;R. Knickmeyer

  • Digit Ratio: A Pointer to Fertility, Behavior, and Health

    John T. Manning

  • The 2nd:4th digit ratio, sexual dimorphism, population differences, and reproductive success. evidence for sexually antagonistic genes?

    J.T. Manning;L. Barley;J. Walton;D.I. Lewis-Jones

  • Second to fourth digit ratio and male ability in sport: implications for sexual selection in humans.

    John T. Manning;Rogan P. Taylor

  • The 2nd to 4th digit ratio and autism

    J T Manning;S Baron-Cohen;S Wheelwright;G Sanders

  • The second to fourth digit ratio and variation in the androgen receptor gene

    John T. Manning;Peter E. Bundred;Darren J. Newton;Brian F. Flanagan

  • Sex and ethnic differences in 2nd to 4th digit ratio of children.

    J.T. Manning;A. Stewart;P.E. Bundred;R.L. Trivers

  • Second to fourth digit ratio, testosterone and perceived male dominance.

    Nick Neave;Sarah Laing;Bernhard Fink;John T. Manning

  • A longitudinal study of digit ratio (2D:4D) and other finger ratios in Jamaican children

    Robert Trivers;John Manning;Amy Jacobson

  • The effects of sex, ethnicity, and sexual orientation on self-measured digit ratio (2D:4D).

    John T. Manning;Andrew J. G. Churchill;Michael Peters

  • Hand preference for writing and associations with selected demographic and behavioral variables in 255,100 subjects: the BBC internet study.

    Michael Peters;Stian Reimers;John T. Manning

  • Digit ratio (2D:4D) and physical fitness in males and females: Evidence for effects of prenatal androgens on sexually selected traits.

    Johannes Hönekopp;John T. Manning;Constanze Müller

  • Facial symmetry and judgements of attractiveness, health and personality

    Bernhard Fink;Nick Neave;John T. Manning;Karl Grammer

  • Resolving the role of prenatal sex steroids in the development of digit ratio.

    John T. Manning

  • Digit Ratio (2D:4D): A Biomarker for Prenatal Sex Steroids and Adult Sex Steroids in Challenge Situations

    John Manning;Liam Kilduff;Christian Cook;Blair Crewther

  • Photocopies yield lower digit ratios (2D:4D) than direct finger measurements.

    John T. Manning;Bernhard Fink;Nick Neave;Noreen Caswell

  • The ratio of 2nd to 4th digit length and male homosexuality.

    S.J Robinson;J.T Manning

  • Digit Ratio (2D:4D), Dominance, Reproductive Success, Asymmetry, and Sociosexuality in the BBC Internet Study

    John T. Manning;Bernhard Fink

  • Second to fourth digit ratio and face shape

    Bernhard Fink;Karl Grammer;Philipp Mitteroecker;Philipp Gunz

  • Second to fourth digit ratio, body mass index, waist-to-hip ratio, and waist-to-chest ratio: their relationships in heterosexual men and women

    Bernhard Fink;Nick Neave;John Manning

Frequent Co-Authors

Bernhard Fink
Bernhard Fink University of Vienna
Nick Neave
Nick Neave Northumbria University
Graham G. Giles
Graham G. Giles University of Melbourne
Dallas R. English
Dallas R. English University of Melbourne
Martin Voracek
Martin Voracek University of Vienna
Randy Thornhill
Randy Thornhill University of New Mexico
Karl Grammer
Karl Grammer University of Vienna
Michael Peters
Michael Peters University of Guelph
Simon Baron-Cohen
Simon Baron-Cohen University of Cambridge

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