World's Best Scientists 2026 revealed!

D-Index & Metrics

Psychology

D-Index
51
Citations
11130
World Ranking
5192
National Ranking
2853

Adam P. Spira 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 Adam P. Spira 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: 262 publications — 83rd percentile

83% of scientists in this discipline score the same or lower.

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

Adam P. Spira 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 Adam P. Spira 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: 51 D-Index — 56th percentile

56% of scientists in this discipline score the same or lower.

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

Overview

Adam P. Spira is affiliated with Johns Hopkins University in the United States. Their research spans several interconnected fields including psychology, medicine, and neuroscience, with a particular focus on sleep and related disorders.

The main fields of study for Spira's work include:

  • Psychology
  • Medicine
  • Neuroscience

The subfields that characterize their research encompass:

  • Experimental and Cognitive Psychology
  • Cognitive Neuroscience
  • Physiology
  • Endocrine and Autonomic Systems
  • Psychiatry and Mental health

The principal topics addressed in their publications are:

  • Sleep and related disorders
  • Sleep and Wakefulness Research
  • Sleep and Work-Related Fatigue
  • Dementia and Cognitive Impairment Research
  • Circadian rhythm and melatonin
  • Obstructive Sleep Apnea Research
  • Physical Activity and Health

Spira has contributed to numerous papers, with recent publications that include:

  • "Impact of Sleep Disorders and Disturbed Sleep on Brain Health: A Scientific Statement From the American Heart Association" (2024, Stroke)
  • "Effects of Weight Loss on Obstructive Sleep Apnea Severity. Ten-Year Results of the Sleep AHEAD Study" (2020, American Journal of Respiratory and Critical Care Medicine)
  • "Association of objectively measured sleep with frailty and 5-year mortality in community-dwelling older adults" (2021, SLEEP)
  • "Associations of adverse childhood experiences with adolescent total sleep time, social jetlag, and insomnia symptoms" (2021, Sleep Medicine)
  • "Trends in sleep problems and patterns among Japanese adolescents: 2004 to 2017" (2021, The Lancet Regional Health - Western Pacific)

Frequent collaborators in their research include:

  • Sarah Wanigatunga
  • Vadim Zipunnikov
  • Jennifer A. Schrack
  • Luigi Ferrucci
  • Jill A. Rabinowitz

Spira has published extensively in a variety of academic journals. Their most frequent publication venues are:

  • SLEEP
  • Innovation in Aging
  • Sleep Health
  • The Journals of Gerontology Series A
  • Alzheimer's & Dementia

Best Publications

  • Sleep-disordered breathing, hypoxia, and risk of mild cognitive impairment and dementia in older women

    Kristine Yaffe;Kristine Yaffe;Alison M. Laffan;Stephanie Litwack Harrison;Susan Redline

  • Self-reported Sleep and β-Amyloid Deposition in Community-Dwelling Older Adults

    Adam P. Spira;Alyssa A. Gamaldo;Yang An;Mark N. Wu

  • The SBSM Guide to Actigraphy Monitoring: Clinical and Research Applications

    Sonia Ancoli-Israel;Jennifer L. Martin;Terri Blackwell;Luis Buenaver

  • Emotional avoidance: an experimental test of individual differences and response suppression using biological challenge.

    M.T Feldner;M.J Zvolensky;G.H Eifert;A.P Spira

  • Reliability and Validity of the Pittsburgh Sleep Quality Index and the Epworth Sleepiness Scale in Older Men

    Adam P. Spira;Sherry A. Beaudreau;Sherry A. Beaudreau;Katie L. Stone;Eric J. Kezirian

  • Impact of Sleep on the Risk of Cognitive Decline and Dementia

    Adam P. Spira;Lenis P. Chen-Edinboro;Mark N. Wu;Kristine Yaffe

  • Validation of the Pittsburgh Sleep Quality Index and the Epworth Sleepiness Scale in older black and white women

    Sherry A. Beaudreau;Adam P. Spira;Anita Stewart;Eric J. Kezirian

  • Sleep Disturbance, Cognitive Decline, and Dementia: A Review.

    Alexandra M.V. Wennberg;Mark N. Wu;Paul B. Rosenberg;Adam P. Spira

  • Memory training interventions for older adults: A meta-analysis

    Alden L. Gross;Jeanine M. Parisi;Adam P. Spira;Alexandra M. Kueider

  • Sleep-disordered breathing and cognition in older women.

    Adam P. Spira;Terri Blackwell;Katie L. Stone;Susan Redline

  • Accuracy of Reports of Lifetime Mental and Physical Disorders: Results From the Baltimore Epidemiological Catchment Area Study

    Yoichiro Takayanagi;Adam P. Spira;Kimberly B. Roth;Joseph J. Gallo

  • Sleep Interacts with Aβ to Modulate Intrinsic Neuronal Excitability

    Masashi Tabuchi;Shahnaz R. Lone;Sha Liu;Qili Liu

  • Sleep Duration and Subsequent Cortical Thinning in Cognitively Normal Older Adults.

    Adam P. Spira;Christopher E. Gonzalez;Vijay K. Venkatraman;Mark N. Wu

  • Measures of Sleep-Wake Patterns and Risk of Mild Cognitive Impairment or Dementia in Older Women.

    Susan J. Diem;Terri L. Blackwell;Katie L. Stone;Kristine Yaffe

  • Poor Sleep Quality and Functional Decline in Older Women

    Adam P. Spira;Kenneth Covinsky;George W. Rebok;Naresh M. Punjabi

  • Mild Cognitive Impairment, Dementia, and Their Subtypes in Oldest Old Women

    Kristine Yaffe;Laura E. Middleton;Li Yung Lui;Adam P. Spira

  • Avoidance-oriented coping as a predictor of panic-related distress: a test using biological challenge.

    Adam P Spira;Michael J Zvolensky;Georg H Eifert;Matthew T Feldner

  • Cognition in obstructive sleep apnea-hypopnea syndrome (OSAS): current clinical knowledge and the impact of treatment.

    Stephanie A. Kielb;Sonia Ancoli-Israel;George W. Rebok;Adam P. Spira

  • Effects of Weight Loss on Obstructive Sleep Apnea Severity. Ten-Year Results of the Sleep AHEAD Study.

    Samuel T Kuna;Samuel T Kuna;David M Reboussin;Elsa S Strotmeyer;Richard P Millman

  • Active-to-Sedentary Behavior Transitions, Fatigability, and Physical Functioning in Older Adults.

    Jennifer A. Schrack;Jennifer A. Schrack;Pei Lun Kuo;Pei Lun Kuo;Amal A. Wanigatunga;Junrui Di

  • Neuropsychiatric symptoms in mild cognitive impairment: differences by subtype and progression to dementia.

    Emily R. Edwards;Adam P. Spira;Deborah E. Barnes;Deborah E. Barnes;Kristine Yaffe

  • Trends in prescribing of sedative-hypnotic medications in the USA: 1993-2010.

    Christopher N. Kaufmann;Christopher N. Kaufmann;Adam P. Spira;G. Caleb Alexander;Lainie Rutkow

Frequent Co-Authors

George W. Rebok
George W. Rebok Johns Hopkins University
Eleanor M. Simonsick
Eleanor M. Simonsick National Institutes of Health
Kristine Yaffe
Kristine Yaffe University of California, San Francisco
Ramin Mojtabai
Ramin Mojtabai Johns Hopkins University
Sonia Ancoli-Israel
Sonia Ancoli-Israel University of California, San Diego
Katie L. Stone
Katie L. Stone University of California, San Francisco
Luigi Ferrucci
Luigi Ferrucci National Institutes of Health
Susan M. Resnick
Susan M. Resnick National Institutes of Health
Kristine E. Ensrud
Kristine E. Ensrud University of Minnesota
Susan Redline
Susan Redline Brigham and Women's Hospital

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Related Online Degrees & Career Pathways

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If you’re considering a career in psychology or mental health counseling, explore flexible online degree options and review your intended location’s licensing pathways early in your planning.

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