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D-Index & Metrics

Psychology

D-Index
73
Citations
17187
World Ranking
1988
National Ranking
1162

Thomas R. Zentall 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 Thomas R. Zentall 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: 454 publications — 96th percentile

96% of scientists in this discipline score the same or lower.

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

Thomas R. Zentall 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 Thomas R. Zentall 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: 73 D-Index — 83rd percentile

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

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

Research.com Recognitions

  • 1984 - Fellow of the American Psychological Association (APA)

Overview

Thomas R. Zentall is affiliated with the University of Kentucky in the United States. Their research spans primarily the fields of Psychology and Agricultural and Biological Sciences with a substantial focus on developmental and educational psychology, animal science and zoology, ecology, evolution, behavior and systematics, cognitive neuroscience, and studies related to small animals.

The research topics covered by Zentall include behavioral and psychological studies, animal nutrition and physiology, animal behavior and welfare studies, child and animal learning development, plant and animal studies, primate behavior and ecology, and animal behavior and reproduction.

Recent publications authored by Zentall reflect a focus on animal cognition and behavior. These include:

  • Effect of Environmental Enrichment on the Brain and on Learning and Cognition by Animals, 2021, Animals
  • Mechanisms of Copying, Social Learning, and Imitation in Animals, 2022, Learning and Motivation
  • The Midsession Reversal Task: A Theoretical Analysis, 2020, Learning & Behavior
  • An Animal Model of Human Gambling Behavior, 2023, Current Research in Behavioral Sciences

Other notable research, though not authored by Zentall but relevant in the context of related behavioral studies, includes:

  • Putting the Self in Self-Correction: Findings From the Loss-of-Confidence Project, 2021, Perspectives on Psychological Science

Zentall regularly publishes articles in journals including Learning & Behavior, Journal of Experimental Psychology Animal Learning and Cognition, Behavioural Processes, Animal Cognition, and the Journal of Comparative Psychology.

Collaborations are documented with frequent co-authors such as Daniel N. Peng, Peyton M. Mueller, Wilson D. Clayton, Shelby M. Brantley, and Megan Halloran, indicating a network of research partnerships within the field of animal behavior and psychology.

In 1984, Zentall was recognized as a Fellow of the American Psychological Association (APA).

Best Publications

  • The evolution of self-control

    Evan L. MacLean;Brian Hare;Charles L. Nunn;Elsa Addessi

  • Optimal stimulation: a model of disordered activity and performance in normal and deviant children.

    Sydney S. Zentall;Thomas R. Zentall

  • Social learning : psychological and biological perspectives

    Thomas R. Zentall;Bennett G. Galef

  • Imitation: definitions, evidence, and mechanisms

    Thomas R. Zentall

  • Comparative cognition : experimental explorations of animal intelligence

    Edward A. Wasserman;Thomas R. Zentall

  • Categorization, concept learning, and behavior analysis: An introduction

    Thomas R Zentall;Mark Galizio;Thomas S Critchfied

  • Concept learning in animals.

    Thomas R. Zentall;Edward A. Wasserman;Olga F. Lazareva;Roger K. R. Thompson

  • Identity: The basis for both matching and oddity learning in pigeons.

    Thomas R. Zentall;Charles A. Edwards;Bradley S. Moore;David E. Hogan

  • Episodic-like memory in pigeons.

    Thomas R. Zentall;Tricia S. Clement;Ramesh S. Bhatt;Jessica Allen

  • "Work ethic" in pigeons: reward value is directly related to the effort or time required to obtain the reward.

    Tricia S. Clement;Joann R. Feltus;Daren H. Kaiser;Thomas R. Zentall

  • Imitative learning in male Japanese quail (Coturnix japonica) using the two-action method.

    Chana K. Akins;Thomas R. Zentall

  • True Imitative Learning in Pigeons

    Thomas R. Zentall;Jennifer E. Sutton;Lou M. Sherburne

  • Abstract concept learning in the pigeon.

    Thomas Zentall;David Hogan

  • Evidence for common coding in many-to-one matching: Retention, intertrial interference, and transfer.

    Peter J. Urcuioli;Thomas R. Zentall;Pamela Jackson-Smith;Janice N. Steirn

  • Suboptimal choice behavior by pigeons.

    Jessica P. Stagner;Thomas R. Zentall

  • Observational Learning and Social Facilitation in the Rat

    Thomas R. Zentall;John M. Levine

  • CHAPTER 11 – An Analysis of Imitative Learning in Animals

    Thomas R. Zentall

  • Same/different concept learning in the pigeon: the effect of negative instances and prior adaptation to transfer stimuli.

    Thomas R. Zentall;E. Hogan

  • IMITATION IN ANIMALS: EVIDENCE, FUNCTION, AND MECHANISMS

    Thomas R. Zentall

  • Acquired equivalence and distinctiveness in matching to sample by pigeons: Mediation by reinforcer-specific expectancies.

    Charles A. Edwards;Joyce A. Jagielo;Thomas R. Zentall;David E. Hogan

  • The Oxford handbook of comparative cognition

    Thomas R. Zentall;Edward A. Wasserman

Frequent Co-Authors

Peter J. Urcuioli
Peter J. Urcuioli Purdue University West Lafayette
Edward A. Wasserman
Edward A. Wasserman University of Iowa
Sydney S. Zentall
Sydney S. Zentall Purdue University West Lafayette
Bennett G. Galef
Bennett G. Galef McMaster University
C. Nathan DeWall
C. Nathan DeWall University of Kentucky
Michael T. Bardo
Michael T. Bardo University of Kentucky
Filippo Aureli
Filippo Aureli Liverpool John Moores University
Ramesh S. Bhatt
Ramesh S. Bhatt University of Kentucky
John M. Levine
John M. Levine University of Pittsburgh
Laurie M. Lawrence
Laurie M. Lawrence University of Kentucky

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