World's Best Scientists 2026 revealed!

D-Index & Metrics

Medicine

D-Index
147
Citations
76394
World Ranking
1296
National Ranking
748

Psychology

D-Index
147
Citations
76611
World Ranking
87
National Ranking
48

Hagop S. Akiskal 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 Hagop S. Akiskal 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: 667 publications — 99th percentile

99% of scientists in this discipline score the same or lower.

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

Hagop S. Akiskal 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 Hagop S. Akiskal 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: 147 D-Index — 99th percentile

99% of scientists in this discipline score the same or lower.

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

Overview

Hagop S. Akiskal was affiliated with the University of California, San Diego in the United States. Their research primarily focused on psychiatry and mental health, with a specialization in bipolar disorder and its treatment.

The scientist contributed to the field through publications in venues such as Psychopharmacology Bulletin and UNC Libraries. Their scholarly work included:

  • The Emergence of the Bipolar Spectrum: Validation along Clinical-Epidemiologic and Familial-Genetic Lines, 2025, Psychopharmacology Bulletin
  • The International Society for Bipolar Disorders (ISBD) Task Force Report on Antidepressant Use in Bipolar Disorders, 2020, UNC Libraries

Their research topics covered bipolar disorder and treatment, which was reflected in the papers authored and coauthored during their career.

Frequent coauthors who collaborated with Akiskal included:

  • MD MD
  • Isabella Pacchiarotti
  • David J. Bond
  • Ross J. Baldessarini
  • Willem A. Nolen

Akiskal's investigative efforts aimed at understanding the clinical-epidemiologic and familial-genetic aspects of bipolar spectrum disorders, as well as contributing to consensus reports on the treatment of bipolar disorders.

Best Publications

  • Lifetime and 12-Month Prevalence of Bipolar Spectrum Disorder in the National Comorbidity Survey Replication

    Kathleen R. Merikangas;Hagop S. Akiskal;Jules Angst;Paul E. Greenberg

  • The long-term natural history of the weekly symptomatic status of bipolar I disorder.

    Lewis L. Judd;Hagop S. Akiskal;Pamela J. Schettler;Jean Endicott

  • A prospective investigation of the natural history of the long-term weekly symptomatic status of bipolar II disorder.

    Lewis L. Judd;Hagop S. Akiskal;Pamela J. Schettler;William Coryell

  • Re-evaluating the prevalence of and diagnostic composition within the broad clinical spectrum of bipolar disorders.

    Hagop S. Akiskal;Marc L. Bourgeois;Jules Angst;Robert Post

  • Prevalence and Effects of Mood Disorders on Work Performance in a Nationally Representative Sample of U.S. Workers

    Ronald C Kessler;Hagop S Akiskal;Minnie Ames;Howard Birnbaum

  • A prospective 12-year study of subsyndromal and syndromal depressive symptoms in unipolar major depressive disorders.

    Lewis L. Judd;Hagop S. Akiskal;Jack D. Maser;Pamela J. Zeller

  • The evolving bipolar spectrum. Prototypes I, II, III, and IV.

    Hagop S. Akiskal;Olavo Pinto

  • The prevalence and disability of bipolar spectrum disorders in the US population: re-analysis of the ECA database taking into account subthreshold cases

    Lewis L. Judd;Hagop S. Akiskal

  • Overview of recent research in depression. Integration of ten conceptual models into a comprehensive clinical frame.

    Hagop S. Akiskal;William T. McKinney

  • Switching from 'unipolar' to bipolar II. An 11-year prospective study of clinical and temperamental predictors in 559 patients.

    Hagop S. Akiskal;Jack D. Maser;Pamela J. Zeller;Jean Endicott

  • Criteria for the "soft" bipolar spectrum: treatment implications.

    H S Akiskal;G Mallya

  • The Relationship of Personality to Affective Disorders: A Critical Review

    Hagop S. Akiskal;Robert M. A. Hirschfeld;Boghos I. Yerevanian;Boghos I. Yerevanian

  • Major depressive disorder: A prospective study of residual subthreshold depressive symptoms as predictor of rapid relapse

    Lewis L Judd;Hagop S Akiskal;Jack D Maser;Pamela J Zeller

  • TEMPS-A: progress towards validation of a self-rated clinical version of the Temperament Evaluation of the Memphis, Pisa, Paris, and San Diego Autoquestionnaire.

    Hagop S. Akiskal;Kareen K. Akiskal;Radwan F. Haykal;J. Sloan Manning

  • Psychosocial Disability During the Long-term Course of Unipolar Major Depressive Disorder

    Lewis L. Judd;Hagop S. Akiskal;Pamela J. Zeller;Martin Paulus

  • The prevalent clinical spectrum of bipolar disorders: beyond DSM-IV.

    Hagop S. Akiskal

  • The International Society for bipolar Disorders (ISBD) task force report on antidepressant use in bipolar disorders

    Isabella Pacchiarotti;David J. Bond;Ross J. Baldessarini;Willem A. Nolen

  • Cyclothymic disorder: validating criteria for inclusion in the bipolar affective group.

    Hagop S. Akiskal;Armen H. Djenderedjian;Renate H. Rosenthal;Munir K. Khani

  • Dysthymic disorder: Psychopathology of proposed chronic depressive subtypes.

    Hagop S. Akiskal

  • Subaffective disorders: dysthymic, cyclothymic and bipolar II disorders in the "borderline" realm.

    Hagop Souren Akiskal

Frequent Co-Authors

Giulio Perugi
Giulio Perugi University of Pisa
Icro Maremmani
Icro Maremmani University of Pisa
Franco Benazzi
Franco Benazzi National Health Service
William Coryell
William Coryell University of Iowa
Cristina Toni
Cristina Toni University of Pisa
Martin B. Keller
Martin B. Keller Brown University
Maurizio Pompili
Maurizio Pompili Sapienza University of Rome
Xenia Gonda
Xenia Gonda Semmelweis University
Ole Bernt Fasmer
Ole Bernt Fasmer University of Bergen
John R. Kelsoe
John R. Kelsoe University of California, San Diego

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