World's Best Scientists 2026 revealed!
Robert Jefferson Snowden

Robert Jefferson Snowden

D-Index & Metrics

Psychology

D-Index
59
Citations
9243
World Ranking
3759
National Ranking
404

Robert Jefferson Snowden 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 Robert Jefferson Snowden 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: 180 publications — 62nd percentile

62% of scientists in this discipline score the same or lower.

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

Robert Jefferson Snowden 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 Robert Jefferson Snowden 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: 59 D-Index — 68th percentile

68% of scientists in this discipline score the same or lower.

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

Overview

Robert Jefferson Snowden is affiliated with Cardiff University in the United Kingdom. Their primary field of study is Psychology, with a strong focus on Clinical Psychology. They have also contributed to research in Social Psychology, Cognitive Neuroscience, Sociology and Political Science, and Experimental and Cognitive Psychology.

Their research work addresses several main topics, including:

  • Psychopathy, Forensic Psychiatry, Sexual Offending
  • Mental Health Treatment and Access
  • COVID-19 and Mental Health
  • Child and Adolescent Psychosocial and Emotional Development
  • Personality Disorders and Psychopathology
  • Maternal Mental Health During Pregnancy and Postpartum
  • Personality Traits and Psychology

Among their recent papers are:

  • "The Influence of the COVID-19 Pandemic on Mental Well-Being and Psychological Distress: Impact Upon a Single Country" (2020), published in Frontiers in Psychiatry
  • "Secondary school students' perception of the online teaching experience during COVID-19: The impact on mental wellbeing and specific learning difficulties" (2021), published in British Journal of Educational Psychology
  • "Reliability and validity of the Psychopathy Checklist-Revised in the assessment of risk for institutional violence: A cautionary note on DeMatteo et al. (2020)" (2020), published in Psychology Public Policy and Law
  • "Development and psychometric properties of the Knowledge and Attitudes to Mental Health Scales (KAMHS): a psychometric measure of mental health literacy in children and adolescents" (2021), published in BMC Pediatrics
  • "Psychological distress and resilience in first responders and health care workers during the COVID-19 pandemic" (2021), published in Journal of Occupational and Organizational Psychology

Their research has been published frequently in venues such as:

  • BMC Public Health
  • Frontiers in Psychiatry
  • Psychology Public Policy and Law
  • Journal of Interpersonal Violence
  • Personality Disorders Theory Research and Treatment

Robert Jefferson Snowden has collaborated regularly with several coauthors, including:

  • Nicola S. Gray
  • Nicola J. Simkiss
  • Jennifer Pink
  • James Knowles
  • Chris O'Connor

Best Publications

  • Prediction of violence and self-harm in mentally disordered offenders: a prospective study of the efficacy of HCR-20, PCL-R, and psychiatric symptomatology.

    Nicola S. Gray;Charlotte Hill;Andrew Mcgleish;David Timmons

  • Motion perception in the ageing visual system: Minimum motion, motion coherence, and speed discrimination thresholds

    Robert Jefferson Snowden;Emma Kavanagh

  • Speed perception fogs up as visibility drops

    Robert Jefferson Snowden;Nicola Stimpson;Roy A. Ruddle

  • An implicit test of the associations between children and sex in pedophiles.

    Nicola Susan Gray;Anthony Brown;Malcolm J. MacCulloch;Jennifer Smith

  • The effects of surround contrast on contrast thresholds, perceived contrast and contrast discrimination

    Robert Jefferson Snowden;Stephen T. Hammett

  • Predicting future reconviction in offenders with intellectual disabilities: the predictive efficacy of VRAG, PCL-SV, and the HCR-20.

    Nicola Susan Gray;Suzanne Fitzgerald;John Taylor;Malcolm J. MacCulloch

  • A taxometric analysis of the Psychopathy Checklist: Screening Version (PCL:SV): further evidence of dimensionality.

    Glenn D. Walters;Nicola Susan Gray;Rebecca L. Jackson;Kenneth W. Sewell

  • The relationship between trauma and beliefs about hearing voices: a study of psychiatric and non-psychiatric voice hearers.

    E. M. Andrew;Nicola Susan Gray;Robert Jefferson Snowden

  • Faking of the implicit association test is statistically detectable and partly correctable

    Dario Cvencek;Anthony G. Greenwald;Anthony S. Brown;Nicola S. Gray

  • Shifts in perceived position following adaptation to visual motion

    Robert Jefferson Snowden

  • Predicting violent reconvictions using the HCR-20

    Nicola S. Gray;John Taylor;Robert Jefferson Snowden

  • Forensic psychology: Violence viewed by psychopathic murderers.

    Nicola Susan Gray;Malcolm J. MacCulloch;Malcolm J. MacCulloch;Jennifer Smith;Mark Morris

  • Relative efficacy of criminological, clinical, and personality measures of future risk of offending in mentally disordered offenders: a comparative study of HCR-20, PCL:SV, and OGRS.

    Nicola Susan Gray;Robert Jefferson Snowden;Sophie MacCulloch;Helen Phillips

  • The Effect of Contrast upon Perceived Speed: A General Phenomenon?

    M. R. Blakemore;Robert Jefferson Snowden

  • Is global motion really based on spatial integration of local motion signals

    Andrew T. Smith;Robert J. Snowden;Alan B. Milne

  • Impulsivity and psychopathy: Associations between the Barrett Impulsivity Scale and the Psychopathy Checklist revised

    Robert Jefferson Snowden;Nicola Susan Gray

  • Phantom motion aftereffects – evidence of detectors for the analysis of optic flow

    Robert Jefferson Snowden;A. B. Milne

  • Which schizotypal dimensions abolish latent inhibition

    Nicola Susan Gray;Michelle Fernandez;Jayne Williams;Roy Allan Ruddle

  • Implicit measurement of sexual associations in child sex abusers: role of victim type and denial.

    Anthony Brown;Nicola Susan Gray;Robert Jefferson Snowden

  • The pupil's response to affective pictures: Role of image duration, habituation, and viewing mode.

    Robert J. Snowden;Katherine R. O'Farrell;Daniel Burley;Jonathan T. Erichsen

  • BRIEF REPORTS An Implicit Test of the Associations Between Children and Sex in Pedophiles

    Nicola S. Gray;Anthony S. Brown;Malcolm J. MacCulloch;Jennifer Smith

Frequent Co-Authors

Nicola S. Gray
Nicola S. Gray Swansea University
Craig S. Neumann
Craig S. Neumann University of North Texas
Tom C. Freeman
Tom C. Freeman University of Edinburgh
Janice L. Muir
Janice L. Muir Cardiff University
Andreas Mokros
Andreas Mokros Rolf C. Hagen Group
Peter Muris
Peter Muris Maastricht University
Oliver Braddick
Oliver Braddick University of Oxford
Alan B. Milne
Alan B. Milne University of Aberdeen
Robert F. Hess
Robert F. Hess McGill University
John B. Taylor
John B. Taylor Stanford University

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