World's Best Scientists 2026 revealed!

D-Index & Metrics

Psychology

D-Index
42
Citations
7474
World Ranking
7545
National Ranking
45

Randolph C. Grace 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 Randolph C. Grace 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: 175 publications — 60th percentile

60% of scientists in this discipline score the same or lower.

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

Randolph C. Grace 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 Randolph C. Grace 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: 42 D-Index — 36th percentile

36% of scientists in this discipline score the same or lower.

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

Overview

Randolph C. Grace is affiliated with the University of Canterbury in New Zealand. Their research spans various interdisciplinary fields, prominently including cognitive neuroscience, physiology, sociology and political science, statistics and probability, and developmental and educational psychology.

The scientist's work covers a range of main topics, such as smoking behavior and cessation, cognitive and developmental aspects of mathematical skills, behavioral and psychological studies, crime patterns and interventions, animal behavior and reproduction, school health and nursing education, and psychopathy, forensic psychiatry, and sexual offending.

Grace's recent published papers illustrate the diversity and scope of their research interests. These include:

  • "Arthropod Intelligence? The Case for Portia" (2020), published in Frontiers in Psychology
  • "Electronic cigarette use among university students aged 18-24 years in New Zealand: results of a 2018 national cross-sectional survey" (2020), published in BMJ Open
  • "Cigarette smoking and e-cigarette use among university students in Queensland, Australia and New Zealand: results of two cross-sectional surveys" (2021), published in BMJ Open
  • "Matching theory and induction explain operant performance" (2020), published in Journal of the Experimental Analysis of Behavior
  • "Using ordinal scales in psychology" (2021), published in Methods in Psychology

Frequent publication venues for Grace include BMJ Open, Behavioural Processes, Frontiers in Psychology, Attention Perception & Psychophysics, and Methods in Psychology.

Throughout their career, Grace has collaborated regularly with a number of co-authors. Frequent collaborators include Simon Kemp, Ben Wamamili, Mark Wallace-Bell, Pat Coope, and Ann Richardson.

Best Publications

  • Behavioral momentum and the law of effect.

    John A. Nevin;Randolph C. Grace

  • Prevalence of traumatic brain injury among children, adolescents and young adults: Prospective evidence from a birth cohort

    A. McKinlay;R. C. Grace;L. J. Horwood;D. M. Fergusson

  • A profile of neuropsychiatric problems and their relationship to quality of life for Parkinson's disease patients without dementia.

    Audrey McKinlay;R Grace;J Dalrymple-Alford;T Anderson

  • A contextual model of concurrent-chains choice.

    Randolph C. Grace

  • Adolescent psychiatric symptoms following preschool childhood mild traumatic brain injury: evidence from a birth cohort.

    Audrey McKinlay;Randolph Grace;John Horwood;David Fergusson

  • The quality of community reintegration planning for child molesters: effects on sexual recidivism.

    Gwenda M. Willis;Randolph C. Grace

  • Characteristics of executive function impairment in Parkinson's disease patients without dementia.

    Audrey Mckinlay;Randolph C. Grace;John C. Dalrymple-Alford;Derek Roger

  • Treatment Gain for Sexual Offenders against Children Predicts Reduced Recidivism: A Comparative Validity Study.

    Sarah M. Beggs;Randolph C. Grace

  • Assessment of Community Reintegration Planning for Sex Offenders Poor Planning Predicts Recidivism

    Gwenda M. Willis;Randolph C. Grace

  • Implicit and explicit categorization: a tale of four species.

    J. David Smith;Mark E. Berg;Robert G. Cook;Matthew S. Murphy

  • Social desirability and sexual offenders: a review.

    Lavinia Tan;Randolph C. Grace

  • Reductions in risk based on time offense-free in the community: Once a sexual offender, not always a sexual offender.

    R. Karl Hanson;Andrew J. R. Harris;Elizabeth Letourneau;L. Maaike Helmus

  • Psychometric Assessment of Dynamic Risk Factors for Child Molesters

    Michael Allan;Randolph C. Grace;Bronwyn Rutherford;Stephen M. Hudson

  • Long-term behavioural outcomes of pre-school mild traumatic brain injury

    Audrey McKinlay;R Grace;L Horwood;David Fergusson

  • Assessment of dynamic risk factors: an independent validation study of the Violence Risk Scale: Sexual Offender Version.

    Sarah M. Beggs;Randolph C. Grace

  • Pigeons’ categorization may be exclusively nonanalytic

    J. David Smith;F. Gregory Ashby;Mark E. Berg;Matthew S. Murphy

  • Incorporating change information into sexual offender risk assessments using the violence risk scale-sexual offender version.

    Mark E. Olver;Sarah M. Beggs Christofferson;Randolph C. Grace;Stephen C. P. Wong

  • THE MATCHING LAW AND AMOUNT-DEPENDENT EXPONENTIAL DISCOUNTING AS ACCOUNTS OF SELF-CONTROL CHOICE

    Randolph C. Grace

  • An investigation of the pre-injury risk factors associated with children who experience traumatic brain injury

    A McKinlay;E G E Kyonka;R C Grace;L J Horwood

  • Estimating Cross-Price Elasticity of E-Cigarettes Using a Simulated Demand Procedure

    Randolph C Grace;Bronwyn M Kivell;Murray Laugesen

  • Resistance to extinction: contingency termination and generalization decrement

    John A. Nevin;Anthony P. Mclean;Anthony P. Mclean;Randolph C. Grace;Randolph C. Grace

Frequent Co-Authors

John A. Nevin
John A. Nevin University of New Hampshire
Simon Kemp
Simon Kemp University of Canterbury
John C. Dalrymple-Alford
John C. Dalrymple-Alford University of Canterbury
Tim J. Anderson
Tim J. Anderson Texas Biomedical Research Institute
David M. Fergusson
David M. Fergusson University of Otago
Stephen C. P. Wong
Stephen C. P. Wong University of Saskatchewan
F. Gregory Ashby
F. Gregory Ashby University of California, Santa Barbara
J. David Smith
J. David Smith Georgia State University
Ralph R. Miller
Ralph R. Miller Binghamton University
Robert R. Jackson
Robert R. Jackson University of Canterbury

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