World's Best Scientists 2026 revealed!
Geoffrey C. Williams

Geoffrey C. Williams

D-Index & Metrics

Social Sciences and Humanities

D-Index
72
Citations
33672
World Ranking
665
National Ranking
320

Geoffrey C. Williams publication distribution in Social Sciences and Humanities in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Social Sciences and Humanities in 2026. The highlighted bar marks where Geoffrey C. Williams sits on this spectrum.

44–53 publications: 28 scientists 54–63 publications: 61 scientists 64–73 publications: 161 scientists 74–83 publications: 225 scientists 84–93 publications: 301 scientists 94–103 publications: 390 scientists 104–113 publications: 406 scientists 114–123 publications: 474 scientists 124–133 publications: 453 scientists 134–143 publications: 434 scientists 144–153 publications: 407 scientists 154–163 publications: 411 scientists 164–173 publications: 391 scientists 174–183 publications: 313 scientists 184–193 publications: 319 scientists 194–203 publications: 304 scientists 204–213 publications: 285 scientists 214–223 publications: 246 scientists 224–233 publications: 213 scientists 234–243 publications: 170 scientists 244–253 publications: 167 scientists 254–263 publications: 162 scientists 264–273 publications: 138 scientists 274–283 publications: 138 scientists 284–293 publications: 113 scientists 294–303 publications: 106 scientists 304–313 publications: 95 scientists 314–323 publications: 101 scientists 324–333 publications: 81 scientists 334–343 publications: 69 scientists 344–353 publications: 56 scientists 354–363 publications: 36 scientists 364–373 publications: 42 scientists 374–383 publications: 41 scientists 384–393 publications: 44 scientists 394–403 publications: 27 scientists 404–413 publications: 30 scientists 414–423 publications: 20 scientists 424–433 publications: 29 scientists 434–443 publications: 29 scientists 444–453 publications: 25 scientists 454–463 publications: 19 scientists 464–473 publications: 21 scientists 474–483 publications: 11 scientists 484–493 publications: 17 scientists 494–503 publications: 7 scientists 504–513 publications: 6 scientists 514–523 publications: 12 scientists 524–533 publications: 10 scientists 534–543 publications: 7 scientists 544–553 publications: 6 scientists 554–563 publications: 12 scientists 564–569 publications: 8 scientists 570+ publications: 100 scientists
44 publications 570+

This scientist: 258 publications — 80th percentile

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

The last bar groups every scientist with 570 publications or more.

Geoffrey C. Williams D-index placement in Social Sciences and Humanities in 2026

The chart shows the D-index (discipline H-index) distribution of Social Sciences and Humanities scientists ranked by Research.com in 2026. The highlighted bar marks where Geoffrey C. Williams sits on this spectrum.

30 D-Index: 177 scientists 31 D-Index: 210 scientists 32 D-Index: 222 scientists 33 D-Index: 188 scientists 34 D-Index: 181 scientists 35 D-Index: 243 scientists 36 D-Index: 261 scientists 37 D-Index: 272 scientists 38 D-Index: 278 scientists 39 D-Index: 300 scientists 40 D-Index: 297 scientists 41 D-Index: 308 scientists 42 D-Index: 313 scientists 43 D-Index: 300 scientists 44 D-Index: 269 scientists 45 D-Index: 260 scientists 46 D-Index: 228 scientists 47 D-Index: 251 scientists 48 D-Index: 203 scientists 49 D-Index: 186 scientists 50 D-Index: 187 scientists 51 D-Index: 166 scientists 52 D-Index: 138 scientists 53 D-Index: 141 scientists 54 D-Index: 131 scientists 55 D-Index: 137 scientists 56 D-Index: 109 scientists 57 D-Index: 129 scientists 58 D-Index: 95 scientists 59 D-Index: 105 scientists 60 D-Index: 106 scientists 61 D-Index: 86 scientists 62 D-Index: 94 scientists 63 D-Index: 77 scientists 64 D-Index: 79 scientists 65 D-Index: 59 scientists 66 D-Index: 68 scientists 67 D-Index: 51 scientists 68 D-Index: 49 scientists 69 D-Index: 40 scientists 70 D-Index: 43 scientists 71 D-Index: 40 scientists 72 D-Index: 50 scientists 73 D-Index: 46 scientists 74 D-Index: 43 scientists 75 D-Index: 45 scientists 76 D-Index: 45 scientists 77 D-Index: 30 scientists 78 D-Index: 25 scientists 79 D-Index: 31 scientists 80 D-Index: 29 scientists 81 D-Index: 18 scientists 82 D-Index: 21 scientists 83 D-Index: 26 scientists 84 D-Index: 15 scientists 85 D-Index: 15 scientists 86 D-Index: 19 scientists 87 D-Index: 19 scientists 88 D-Index: 12 scientists 89 D-Index: 7 scientists 90 D-Index: 19 scientists 91 D-Index: 20 scientists 92 D-Index: 13 scientists 93 D-Index: 9 scientists 94 D-Index: 13 scientists 95 D-Index: 8 scientists 96 D-Index: 7 scientists 97 D-Index: 6 scientists 98 D-Index: 6 scientists 99 D-Index: 6 scientists 100+ D-Index: 97 scientists
30 D-Index 100+

This scientist: 72 D-Index — 92nd percentile

92% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 100 D-Index or more.

Overview

Geoffrey C. Williams is affiliated with the University of Rochester in the United States. Their research primarily spans the fields of Medicine and Psychology, with a focus on Social Psychology, General Health Professions, Applied Psychology, Epidemiology, and Infectious Diseases as key subfields.

The scientist's recent publications include studies that contribute to understanding motivation, health behavior, and psychological outcomes within various health contexts. Selected recent papers are:

  • A meta-analysis of self-determination theory-informed intervention studies in the health domain: effects on motivation, health behavior, physical, and psychological health (2020) published in Health Psychology Review
  • A classification of motivation and behavior change techniques used in self-determination theory-based interventions in health contexts (2020) published in Motivation Science
  • Mindfulness buffers the adverse impact of need frustration on employee outcomes: A self-determination theory perspective (2021) published in Journal of Theoretical Social Psychology
  • Breastfeeding Motivation Predicts Infant Feeding Intention and Outcomes: Evaluation of a Novel Adaptation of the Treatment Self-Regulation Questionnaire (2021) published in Journal of Human Lactation
  • A randomized placebo-controlled trial of bupropion for Cancer-related fatigue: Study design and procedures (2020) published in Contemporary Clinical Trials

Their work frequently appears in the following venues:

  • Contemporary Clinical Trials
  • Health Psychology Review
  • Motivation Science
  • Journal of Theoretical Social Psychology
  • Journal of Human Lactation

Collaborations play a significant role in their research output. Frequent coauthors include Anja H. Olafsen, Christopher P. Niemiec, Edward L. Deci, Hallgeir Halvari, and Andréas Ivarsson, with partnerships appearing consistently across multiple studies.

Their research covers a variety of topics, including:

  • Motivation and Self-Concept in Sports
  • Behavioral Health and Interventions
  • HIV/AIDS Research and Interventions
  • Job Satisfaction and Organizational Behavior
  • Health Systems, Economic Evaluations, Quality of Life
  • Diabetes Management and Education
  • Maternal Mental Health During Pregnancy and Postpartum

Best Publications

  • Self-determination theory applied to health contexts: A meta-analysis.

    Johan Y. Y. Ng;Nikos Ntoumanis;Cecilie Thøgersen-Ntoumani;Edward L. Deci

  • Motivational Predictors of Weight Loss and Weight-Loss Maintenance

    Geoffrey C. Williams;Virginia M. Grow;Zachary R. Freedman;Richard M. Ryan

  • Internalization of biopsychosocial values by medical students: a test of self-determination theory.

    Geoffrey C. Williams;Edward L. Deci

  • Facilitating health behaviour change and its maintenance: Interventions based on Self-Determination Theory

    Richard Michael Ryan;Heather Patrick;Edward L. Deci;Geoffrey C. Williams

  • Supporting autonomy to motivate patients with diabetes for glucose control

    Geoffrey C Williams;Zachary R Freedman;Edward L Deci

  • Need satisfaction and the self-regulation of learning

    Edward L. Deci;Richard M. Ryan;Geoffrey C. Williams

  • A meta-analysis of self-determination theory-informed intervention studies in the health domain: effects on motivation, health behavior, physical, and psychological health

    Nikos Ntoumanis;Johan Y.Y. Ng;Andrew Prestwich;Eleanor Quested

  • Effective behaviour change techniques for physical activity and healthy eating in overweight and obese adults; systematic review and meta-regression analyses

    Gro Beate Samdal;Geir Egil Eide;Tom Barth;Geoffrey Williams

  • Validating the theoretical structure of the Treatment Self-Regulation Questionnaire (TSRQ) across three different health behaviors

    Chantal S. Levesque;Geoffrey C. Williams;Diane Elliot;Michael A. Pickering

  • Autonomous regulation and long-term medication adherence in adult outpatients.

    Geoffrey C. Williams;Gail C. Rodin;Richard M. Ryan;Wendy S. Grolnick

  • Testing a self-determination theory process model for promoting glycemic control through diabetes self-management.

    Geoffrey C. Williams;Holly A. McGregor;Allan Zeldman;Zachary R. Freedman

  • How self-determination theory can assist our understanding of the teaching and learning processes in medical education. AMEE Guide No. 59

    Olle Th.J. ten Cate;Rashmi A. Kusurkar;Geoffrey C. Williams

  • Testing a Self-Determination Theory Intervention for Motivating Tobacco Cessation: Supporting Autonomy and Competence in a Clinical Trial

    Geoffrey C. Williams;Holly A. McGregor;Daryl Sharp;Chantal Levesque

  • Extrinsic Life Goals and Health‐Risk Behaviors in Adolescents1

    Geoffrey C. Williams;Viking A. Hedberg;Elizabeth M. Cox;Edward L. Deci

  • Facilitating autonomous motivation for smoking cessation.

    Geoffrey G. Williams;Marylène Gagné;Richard M. Ryan;Edward L. Deci

  • Self-determination theory: its application to health behavior and complementarity with motivational interviewing

    Heather Patrick;Geoffrey C Williams

  • Religion and Attitudes to Corporate Social Responsibility in a Large Cross-Country Sample.

    S. Brammer;Geoffrey Williams;John Zinkin

  • Self-determination theory and physical activity: The dynamics of motivation in development and wellness

    Richard Michael Ryan;Geoffrey C. Williams;Heather Patrick;Edward L. Deci

  • A self-determination process model of physical activity adoption in the context of a randomized controlled trial.

    Michelle S. Fortier;Shane N. Sweet;Tracey L. O’Sullivan;Geoffrey C. Williams

  • A Classification of Motivation and Behavior Change Techniques Used in Self-Determination Theory-Based Interventions in Health Contexts

    Pedro J. Teixeira;Marta M. Marques;Marlene N. Silva;Jennifer Brunet

  • Self-Determination Theory in the Clinic: Motivating Physical and Mental Health

    Kennon M. Sheldon;Geoffrey Williams;Thomas E. Joiner

  • Evaluation of a standard provision versus an autonomy promotive exercise referral programme: rationale and study design

    Kate Jolly;Joan L Duda;Amanda Daley;Frank F Eves

Frequent Co-Authors

Edward L. Deci
Edward L. Deci University of Rochester
Richard M. Ryan
Richard M. Ryan Australian Catholic University
Ken Resnicow
Ken Resnicow University of Michigan–Ann Arbor
Nikos Ntoumanis
Nikos Ntoumanis University of Southern Denmark
Christopher P. Niemiec
Christopher P. Niemiec University of Rochester
Kennon M. Sheldon
Kennon M. Sheldon University of Missouri
Thomas E. Joiner
Thomas E. Joiner Florida State University
Karen E. Peterson
Karen E. Peterson University of Michigan–Ann Arbor
Hallgeir Halvari
Hallgeir Halvari Sewanee: The University of the South
Joan L. Duda
Joan L. Duda University of Birmingham

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