World's Best Scientists 2026 revealed!

D-Index & Metrics

Psychology

D-Index
69
Citations
26829
World Ranking
2331
National Ranking
1356

F. Gregory Ashby 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 F. Gregory Ashby 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: 154 publications — 51st percentile

51% of scientists in this discipline score the same or lower.

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

F. Gregory Ashby 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 F. Gregory Ashby 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: 69 D-Index — 80th percentile

80% of scientists in this discipline score the same or lower.

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

Overview

F. Gregory Ashby is affiliated with the University of California, Santa Barbara in the United States. Their research spans several interconnected fields including neuroscience, psychology, and computer science, with a particular focus on cognitive neuroscience and developmental and educational psychology.

Ashby's published work extensively covers themes such as child and animal learning development, memory and neural mechanisms, neural networks and applications, neural dynamics and brain function, reading and literacy development, neural and behavioral psychology studies, and Bayesian modeling and causal inference.

Significant recent papers authored or co-authored by Ashby include:

  • Just do it: A neuropsychological theory of agency, cognition, mood, and dopamine. (2024), published in Journal of Experimental Psychology General
  • State trace analysis: What it can and cannot do. (2022), published in Journal of Mathematical Psychology
  • A neurocomputational theory of how rule-guided behaviors become automatic. (2021), published in Psychological Review
  • When instructions don't help: Knowing the optimal strategy facilitates rule-based but not information-integration category learning. (2021), published in Journal of Experimental Psychology Human Perception & Performance
  • Linear separability, irrelevant variability, and categorization difficulty. (2021), published in Journal of Experimental Psychology Learning Memory and Cognition

Their frequent co-authors include Jeffrey B. Inglis, Paul Kovacs, Luke Rosedahl, Matthew J. Crossley, and Heidi A. Zetzer. Collaboration with these researchers has produced multiple publications across various psychological and neuroscientific topics.

Ashby's work has appeared repeatedly in the Journal of Mathematical Psychology, where they have published three articles, as well as contributions to Journal of Experimental Psychology General, Psychological Review, and Journal of Experimental Psychology Human Perception & Performance, among others.

The main fields of study represented in Ashby's body of work are:

  • Neuroscience
  • Psychology
  • Computer Science

Within these areas, subfields emphasized include:

  • Cognitive Neuroscience
  • Developmental and Educational Psychology
  • Artificial Intelligence
  • Social Psychology
  • Applied Psychology

Themes of Ashby's research reflect a focus on learning processes in both human and animal subjects, mechanisms underlying memory, the functioning and modeling of neural networks, and cognitive theories related to brain function and behavior.

Best Publications

  • A neuropsychological theory of positive affect and its influence on cognition.

    F. Gregory Ashby;Alice M. Isen;And U. Turken

  • The Stochastic Modeling of Elementary Psychological Processes

    James T. Townsend;F. Gregory Ashby

  • A neuropsychological theory of multiple systems in category learning.

    Unknown

  • Human Category Learning

    F. Gregory Ashby;W. Todd Maddox

  • Varieties of perceptual independence.

    F. Gregory Ashby;James T. Townsend

  • Deconvolving BOLD activation in event-related designs for multivoxel pattern classification analyses.

    Jeanette A. Mumford;Benjamin O. Turner;F. Gregory Ashby;Russell A. Poldrack

  • Toward a Unified Theory of Similarity and Recognition

    F. Gregory Ashby;Nancy A. Perrin

  • Multidimensional models of perception and cognition.

    F. Gregory Ashby

  • Cortical and basal ganglia contributions to habit learning and automaticity

    F. Gregory Ashby;Benjamin O. Turner;Jon C. Horvitz

  • Methods of Modeling Capacity in Simple Processing Systems

    James T. Townsend;F. Gregory Ashby

  • Relations between prototype, exemplar, and decision bound models of categorization

    F. Gregory Ashby;W. Todd Maddox

  • Delayed feedback effects on rule-based and information-integration category learning.

    W. Todd Maddox;F. Gregory Ashby;Corey J. Bohil

  • Comparing decision bound and exemplar models of categorization

    W. Todd Maddox;F. Gregory Ashby

  • Human category learning 2.0

    F. Gregory Ashby;W. Todd Maddox

  • The effects of concurrent task interference on category learning: evidence for multiple category learning systems.

    Elliott M. Waldron;F. Gregory Ashby

  • The neurobiology of human category learning

    F.Gregory Ashby;Shawn W. Ell

  • Dissociating explicit and procedural-learning based systems of perceptual category learning

    W.Todd Maddox;F.Gregory Ashby

  • Category learning and multiple memory systems

    F. Gregory Ashby;Jeffrey B. O'Brien

  • Multidimensional models of categorization.

    F. Gregory Ashby

  • Measurement Scales and Statistics: The Misconception Misconceived

    James T. Townsend;F. Gregory Ashby

  • A neurobiological theory of automaticity in perceptual categorization.

    F. Gregory Ashby;John M. Ennis;Brian J. Spiering

Frequent Co-Authors

W. Todd Maddox
W. Todd Maddox The University of Texas at Austin
J. David Smith
J. David Smith Georgia State University
James T. Townsend
James T. Townsend Indiana University
J. Vincent Filoteo
J. Vincent Filoteo University of California, San Diego
Robert G. Cook
Robert G. Cook Tufts University
Michael J. Beran
Michael J. Beran Georgia State University
Alice M. Isen
Alice M. Isen Cornell University
Jeanette A. Mumford
Jeanette A. Mumford University of Wisconsin–Madison
Russell A. Poldrack
Russell A. Poldrack Stanford University
Randolph C. Grace
Randolph C. Grace University of Canterbury

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