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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Psychology 54 4673 4327 263 255 167 8884

Gregory D. Roach publications per year

The chart shows the history of publications by Gregory D. Roach between 1993 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Gregory D. Roach published across 33 years, from 1993 to 2025, averaging 5.9 papers a year. Output peaked at 16 publications in 2010. 9 of the 194 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 1993 to 2025. Vertical axis: number of publications, 0 to 16. Peak 16 publications in 2010. 1993: 1 publication 1994: 0 publications 1995: 1 publication 1996: 0 publications 1997: 0 publications 1998: 0 publications 1999: 1 publication 2000: 1 publication 2001: 5 publications 2002: 1 publication 2003: 6 publications 2004: 5 publications 2005: 3 publications 2006: 6 publications 2007: 3 publications 2008: 2 publications 2009: 1 publication 2010: 16 publications 2011: 8 publications 2012: 15 publications 2013: 9 publications 2014: 9 publications 2015: 4 publications 2016: 11 publications 2017: 11 publications 2018: 7 publications 2019: 10 publications 2020: 13 publications 2021: 13 publications 2022: 15 publications 2023: 8 publications 2024: 2 publications 2025: 7 publications
1993 2025

194 publications in total across all disciplines

View publications per year as a table
Gregory D. Roach: publications per year, 1993 to 2025
Year Publications
1993 1
1994 0
1995 1
1996 0
1997 0
1998 0
1999 1
2000 1
2001 5
2002 1
2003 6
2004 5
2005 3
2006 6
2007 3
2008 2
2009 1
2010 16
2011 8
2012 15
2013 9
2014 9
2015 4
2016 11
2017 11
2018 7
2019 10
2020 13
2021 13
2022 15
2023 8
2024 2
2025 7
Total 194
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Gregory D. Roach 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 Gregory D. Roach sits on this spectrum.

No. of scientists
200 400 600
Bar chart with 69 bars. Horizontal axis: publications, 31–40 to 705+. Vertical axis: number of scientists, 0 to 736. Most scientists, 736, have 101–110 publications. The last bar groups every scientist with 705 publications or more. The highlighted bar, 161–170 publications, is where this scientist sits. 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
31–40 publications 705+

This scientist: 167 publications — 57th percentile

57% of scientists in this discipline score the same or lower.

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

View publications distribution as a table
Number of Psychology scientists by publication count, Research.com 2026 ranking edition. Based on 11,416 ranked scientists.
Publications Scientists This scientist
31–40 6
41–50 52
51–60 138
61–70 299
71–80 461
81–90 605
91–100 713
101–110 736
111–120 686
121–130 670
131–140 644
141–150 597
151–160 576
161–170 477 167
171–180 450
181–190 397
191–200 343
201–210 328
211–220 313
221–230 283
231–240 226
241–250 196
251–260 201
261–270 171
271–280 151
281–290 139
291–300 113
301–310 102
311–320 100
321–330 76
331–340 92
341–350 85
351–360 69
361–370 71
371–380 63
381–390 58
391–400 57
401–410 43
411–420 33
421–430 50
431–440 41
441–450 32
451–460 27
461–470 28
471–480 25
481–490 28
491–500 20
501–510 23
511–520 26
521–530 17
531–540 21
541–550 14
551–560 16
561–570 10
571–580 22
581–590 9
591–600 14
601–610 9
611–620 11
621–630 4
631–640 7
641–650 5
651–660 10
661–670 8
671–680 8
681–690 4
691–700 3
701–704 4
705+ 100
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Gregory D. Roach 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 Gregory D. Roach sits on this spectrum.

No. of scientists
200 400 600
Bar chart with 58 bars. Horizontal axis: D-Index, 30–31 to 144+. Vertical axis: number of scientists, 0 to 702. Most scientists, 702, have 32–33 D-Index. The last bar groups every scientist with 144 D-Index or more. The highlighted bar, 54–55 D-Index, is where this scientist sits. 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
30–31 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.

View D-Index distribution as a table
Number of Psychology scientists by D-index, Research.com 2026 ranking edition. Based on 11,416 ranked scientists.
D-Index Scientists This scientist
30–31 398
32–33 702
34–35 671
36–37 659
38–39 641
40–41 671
42–43 617
44–45 558
46–47 495
48–49 487
50–51 445
52–53 390
54–55 408 54
56–57 345
58–59 325
60–61 321
62–63 248
64–65 290
66–67 218
68–69 219
70–71 215
72–73 183
74–75 169
76–77 132
78–79 137
80–81 120
82–83 112
84–85 86
86–87 101
88–89 83
90–91 77
92–93 70
94–95 78
96–97 58
98–99 53
100–101 57
102–103 48
104–105 53
106–107 46
108–109 24
110–111 35
112–113 27
114–115 32
116–117 31
118–119 22
120–121 16
122–123 24
124–125 18
126–127 11
128–129 19
130–131 10
132–133 16
134–135 10
136–137 12
138–139 8
140–141 5
142–143 12
144+ 98
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Overview

Gregory D. Roach is affiliated with Central Queensland University in Australia. The primary focus of their research lies in the fields of Psychology, Medicine, and Neuroscience. Their work is particularly concentrated in the subfields of Experimental and Cognitive Psychology, Cognitive Neuroscience, Endocrine and Autonomic Systems, Physiology, and Cardiology and Cardiovascular Medicine.

The main topics addressed in their research include:

  • Sleep and related disorders
  • Sleep and Work-Related Fatigue
  • Sleep and Wakefulness Research
  • Circadian rhythm and melatonin
  • Heart Rate Variability and Autonomic Control
  • Obstructive Sleep Apnea Research
  • High Altitude and Hypoxia

Gregory D. Roach has published research in several frequent venues. Some of the main publication outlets are:

  • Sensors
  • International Journal of Sports Physiology and Performance
  • Clocks & Sleep
  • bioRxiv (Cold Spring Harbor Laboratory)
  • Chronobiology International

Frequent collaborators in their work include:

  • Charli Sargent (49 coauthored works)
  • Dean J. Miller (20 coauthored works)
  • Shona L. Halson (19 coauthored works)
  • Michele Lastella (12 coauthored works)
  • Andrew M. Reiter (7 coauthored works)

Selected recent papers by Gregory D. Roach include:

  • Sleep and the athlete: narrative review and 2021 expert consensus recommendations, 2020, British Journal of Sports Medicine
  • A Validation of Six Wearable Devices for Estimating Sleep, Heart Rate and Heart Rate Variability in Healthy Adults, 2022, Sensors
  • The effect of caffeine on subsequent sleep: A systematic review and meta-analysis, 2023, Sleep Medicine Reviews
  • Analyzing changes in respiratory rate to predict the risk of COVID-19 infection, 2020, PLoS ONE
  • Managing Travel Fatigue and Jet Lag in Athletes: A Review and Consensus Statement, 2021, Sports Medicine

The research spans diverse topics related to sleep science, wearable technology validation, effects of substances on sleep patterns, respiratory indicators of infectious diseases, and strategies to manage athletic fatigue and jet lag. Their contributions reflect a multidisciplinary approach involving physiology, psychology, and applied health sciences with emphasis on athletic and clinical sleep contexts.

Best Publications

  • Sleep and the athlete: Narrative review and 2021 expert consensus recommendations

    Neil P Walsh;Shona L Halson;Charli Sargent;Gregory D Roach

  • The validity of psychomotor vigilance tasks of less than 10-minute duration

    Sylvia Loh;Nicole Lamond;Jill Dorrian;Gregory Roach

  • The impact of training schedules on the sleep and fatigue of elite athletes

    Charli Sargent;Michele Lastella;Shona L. Halson;Gregory D. Roach

  • Sleep/wake behaviours of elite athletes from individual and team sports

    Michele Lastella;Gregory D Roach;Shona L Halson;Charli Sargent

  • Sleep or swim? Early-morning training severely restricts the amount of sleep obtained by elite swimmers

    Charli Sargent;Shona Halson;Gregory Daniel Roach

  • A Validation of Six Wearable Devices for Estimating Sleep, Heart Rate and Heart Rate Variability in Healthy Adults

    Unknown

  • The effect of caffeine on subsequent sleep: A systematic review and meta-analysis.

    Unknown

  • Can a shorter psychomotor vigilance task be used as a reasonable substitute for the ten-minute psychomotor vigilance task?

    Gregory D. Roach;Drew Dawson;Nicole Lamond

  • Simulated train driving: Fatigue, self-awareness and cognitive disengagement

    Jillian Dorrian;Gregory D. Roach;Adam Fletcher;Drew Dawson

  • Alternatives to polysomnography (PSG): A validation of wrist actigraphy and a partial-PSG system

    Anastasi Kosmadopoulos;Charli Sargent;David Darwent;Xuan Zhou

  • The validity of activity monitors for measuring sleep in elite athletes

    Charli Sargent;Michele Lastella;Shona L. Halson;Gregory D. Roach

  • Fatigue assessment in the field: validation of a hand-held electronic psychomotor vigilance task.

    Nicole Lamond;Drew Dawson;Gregory D. Roach

  • The sleep, subjective fatigue, and sustained attention of commercial airline pilots during an international pattern.

    Renée M. Petrilli;Gregory D. Roach;Drew Dawson;Nicole Lamond

  • Analyzing changes in respiratory rate to predict the risk of COVID-19 infection.

    Dean J. Miller;John V. Capodilupo;Michele Lastella;Charli Sargent

  • The relationship between the dim light melatonin onset and sleep on a regular schedule in young healthy adults

    Helen J Burgess;Natasha Savic;Tracey Sletten;Gregory Roach

  • The impact of a week of simulated night work on sleep, circadian phase, and performance.

    N Lamond;J Dorrian;G D Roach;K McCulloch

  • Perceptions of labour pain by mothers and their attending midwives.

    Angela Baker;Sally A. Ferguson;Gregory D. Roach;Drew Dawson

  • Mismatch between subjective alertness and objective performance under sleep restriction is greatest during the biological night

    Xuan Zhou;Sally A. Ferguson;Raymond W. Matthews;Charli Sargent

  • The effect of sleep restriction on snacking behaviour during a week of simulated shiftwork

    Georgina Heath;Gregory D. Roach;Jillian Dorrian;Sally Anne Ferguson

  • The ability to self-monitor performance during a week of simulated night shifts.

    Jillian Dorrian;Nicole Lamond;Alexandra L. Holmes;Helen J. Burgess

  • A model to predict work-related fatigue based on hours of work.

    Gregory D. Roach;Adam Fletcher;Drew Dawson

  • Sleep/wake behaviour of endurance cyclists before and during competition

    Michele Lastella;Gregory Daniel Roach;Shona Leigh Halson;David Thomas Martin

Frequent Co-Authors

Charli Sargent
Charli Sargent Central Queensland University
Drew Dawson
Drew Dawson Central Queensland University
Sally A. Ferguson
Sally A. Ferguson Central Queensland University
Jillian Dorrian
Jillian Dorrian University of South Australia
Helen J. Burgess
Helen J. Burgess University of Michigan–Ann Arbor
Christopher J. Gore
Christopher J. Gore Australian Institute of Sport
David Bishop
David Bishop Victoria University
Stuart M. Phillips
Stuart M. Phillips McMaster University
Kathryn J. Reid
Kathryn J. Reid Northwestern University
Leon Lack
Leon Lack Flinders University

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