World's Best Scientists 2026 revealed!

D-Index & Metrics

Psychology

D-Index
54
Citations
20983
World Ranking
4495
National Ranking
296

Hans Ivers 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 Hans Ivers 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: 217 publications — 74th percentile

74% of scientists in this discipline score the same or lower.

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

Hans Ivers 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 Hans Ivers 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: 54 D-Index — 61st percentile

61% of scientists in this discipline score the same or lower.

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

Overview

Hans Ivers is affiliated with Université Laval in Canada and has a significant research focus in the fields of psychology and neuroscience. Their work primarily concentrates on sleep and related disorders, addressing topics such as sleep and wakefulness research, circadian rhythm and melatonin, family dynamics and relationships, COVID-19's impact on mental health, workplace health and well-being, and intergenerational family dynamics and caregiving.

The main fields of study for Hans Ivers include:

  • Psychology
  • Neuroscience

Their research spans several subfields of study, including:

  • Experimental and Cognitive Psychology
  • Cognitive Neuroscience
  • Clinical Psychology
  • Endocrine and Autonomic Systems
  • General Health Professions

Hans Ivers has contributed extensively to scientific literature, with notable recent publications such as:

  • Insomnia, anxiety, and depression during the COVID-19 pandemic: an international collaborative study (2021) published in Sleep Medicine
  • Incidence, Persistence, and Remission Rates of Insomnia Over 5 Years (2020) published in JAMA Network Open
  • Prevalent, incident, and persistent insomnia in a population-based cohort tested before (2018) and during the first-wave of COVID-19 pandemic (2020) (2021) published in SLEEP
  • COVID-19 Pandemic Stressors and Psychological Symptoms in Breast Cancer Patients (2021) published in Current Oncology
  • Effectiveness of Sequential Psychological and Medication Therapies for Insomnia Disorder (2020) published in JAMA Psychiatry

The scientist has frequently published in the following venues:

  • SLEEP
  • Sleep Medicine
  • Journal of Sleep Research
  • Psycause revue scientifique étudiante de l'École de psychologie de l'Universit Laval
  • Frontiers in Psychology

Hans Ivers has collaborated extensively with several co-authors across their body of work. Frequent co-authors include:

  • Charles M. Morin
  • Josée Savard
  • Janet M. Y. Cheung
  • Sijing Chen
  • Sylvie Drapeau

Best Publications

  • The Insomnia Severity Index: psychometric indicators to detect insomnia cases and evaluate treatment response.

    Charles M. Morin;Geneviève Belleville;Lynda Bélanger;Hans Ivers

  • Role of stress, arousal, and coping skills in primary insomnia.

    Charles M. Morin;Sylvie Rodrigue;Hans Ivers

  • Dysfunctional beliefs and attitudes about sleep (DBAS): validation of a brief version (DBAS-16).

    Charles M. Morin;Annie Vallières;Hans Ivers

  • Cognitive behavioral therapy, singly and combined with medication, for persistent insomnia: a randomized controlled trial.

    Charles M. Morin;Annie Vallières;Bernard Guay;Hans Ivers

  • Insomnia and daytime cognitive performance : a meta-analysis

    Émilie Fortier-Brochu;Simon Beaulieu-Bonneau;Hans Ivers;Charles M. Morin

  • The Natural History of Insomnia : A Population-Based 3-Year Longitudinal Study

    Charles M. Morin;Lynda Bélanger;Mélanie LeBlanc;Hans Ivers

  • Randomized Study on the Efficacy of Cognitive-Behavioral Therapy for Insomnia Secondary to Breast Cancer, Part I: Sleep and Psychological Effects

    Josée Savard;Sébastien Simard;Hans Ivers;Charles M. Morin

  • Incidence and risk factors of insomnia in a population-based sample.

    Mélanie LeBlanc;Chantal Mérette;Josée Savard;Hans Ivers

  • Prevalence, clinical characteristics, and risk factors for insomnia in the context of breast cancer.

    Josée Savard;Sébastien Simard;Julie Blanchet;Hans Ivers

  • Empirical validation of the Insomnia Severity Index in cancer patients.

    Marie-Hélène Savard;Josée Savard;Sébastien Simard;Hans Ivers

  • Psychological and health-related quality of life factors associated with insomnia in a population-based sample

    Mélanie LeBlanc;Simon Beaulieu-Bonneau;Chantal Mérette;Josée Savard

  • Natural Course of Insomnia Comorbid With Cancer: An 18-Month Longitudinal Study

    Josée Savard;Hans Ivers;Julie Villa;Aude Caplette-Gingras

  • Prevalence of Insomnia and its Treatment in Canada

    Charles M Morin;Mélanie LeBlanc;Lynda Bélanger;Hans Ivers

  • Validation of the Insomnia Severity Index in Primary Care

    Christine Gagnon;Lynda Bélanger;Hans Ivers;Charles M. Morin

  • Fear of cancer recurrence: specific profiles and nature of intrusive thoughts

    Sébastien Simard;Josée Savard;Hans Ivers

  • Insomnia, anxiety, and depression during the COVID-19 pandemic: an international collaborative study.

    Charles M. Morin;Bjørn Bjorvatn;Frances Chung;Brigitte Holzinger

  • Efficacy of cognitive-behavioral therapy for insomnia in women treated for nonmetastatic breast cancer

    Catherine Quesnel;Josée Savard;Sébastien Simard;Hans Ivers

  • Evaluating anxiety and depression in HIV-infected patients.

    Josee Savard;Benoit Laberge;Janel G. Gauthier;Hans Ivers

  • Cognitive impairments associated with breast cancer treatments: results from a longitudinal study

    Catherine Quesnel;Josée Savard;Hans Ivers

  • Prevalence, Natural Course, and Risk Factors of Insomnia Comorbid With Cancer Over a 2-Month Period

    Josée Savard;Julie Villa;Hans Ivers;Sébastien Simard

  • Chronic insomnia and immune functioning.

    Josée Savard;Liny Laroche;Sébastien Simard;Hans Ivers

  • At work but ill: psychosocial work environment and well‐being determinants of presenteeism propensity

    Caroline Biron;Jean‐Pierre Brun;Hans Ivers;Cary Cooper

  • Randomized clinical trial on cognitive therapy for depression in women with metastatic breast cancer: Psychological and immunological effects

    Josée Savard;Sébastien Simard;Isabelle Giguère;Hans Ivers

  • Randomized Study on the Efficacy of Cognitive-Behavioral Therapy for Insomnia Secondary to Breast Cancer, Part II: Immunologic Effects

    Josée Savard;Sébastien Simard;Hans Ivers;Charles M. Morin

  • Comparative efficacy of behavior therapy, cognitive therapy, and cognitive behavior therapy for chronic insomnia: a randomized controlled trial.

    Allison G. Harvey;Lynda Bélanger;Lisa Talbot;Polina Eidelman

Frequent Co-Authors

Charles M. Morin
Charles M. Morin Université Laval
Josée Savard
Josée Savard Université Laval
Til Wykes
Til Wykes King's College London
Colin A. Espie
Colin A. Espie University of Oxford
Bjørn Bjorvatn
Bjørn Bjorvatn University of Bergen
Yun Kwok Wing
Yun Kwok Wing Chinese University of Hong Kong
Frances Chung
Frances Chung University Health Network
Giuseppe Plazzi
Giuseppe Plazzi University of Bologna
Luigi De Gennaro
Luigi De Gennaro Sapienza University of Rome
Markku Partinen
Markku Partinen University of Helsinki

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