World's Best Scientists 2026 revealed!

D-Index & Metrics

Psychology

D-Index
33
Citations
3217
World Ranking
10678
National Ranking
5578

Ryan S. Trim 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 Ryan S. Trim 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: 76 publications — 7th percentile

7% of scientists in this discipline score the same or lower.

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

Ryan S. Trim 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 Ryan S. Trim 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: 33 D-Index — 10th percentile

10% of scientists in this discipline score the same or lower.

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

Overview

Ryan S. Trim is affiliated with the University of California, San Diego in the United States. Their research primarily spans the fields of psychology and medicine, with a strong focus on clinical psychology as well as public health, environmental and occupational health. Subfields of study also include epidemiology, pediatrics, perinatology, child health, and physiology.

Their work covers multiple topics related to mental health and addiction, especially focusing on posttraumatic stress disorder (PTSD), suicide and self-harm, opioid use disorder treatment, as well as migration, health and trauma. Other areas of interest include child abuse and trauma, traumatic brain injury research, and resilience and mental health.

Below are some of Ryan S. Trim's recent publications, highlighting their consistent research contributions across trauma and addiction studies:

  • "Bidirectional relationship of posttraumatic stress disorder (PTSD) symptom severity and alcohol use over the course of integrated treatment.", 2020, Psychology of Addictive Behaviors
  • "Does exposure exacerbate symptoms in veterans with PTSD and alcohol use disorder?", 2020, Psychological Trauma Theory Research Practice and Policy
  • "Comparing Exposure- and Coping Skills-Based Treatments on Trauma-Related Guilt in Veterans With Co-Occurring Alcohol Use and Posttraumatic Stress Disorders", 2020, Journal of Traumatic Stress
  • "Within-treatment clinical markers of dropout risk in integrated treatments for comorbid PTSD and alcohol use disorder", 2021, Drug and Alcohol Dependence
  • "Non-daily Cigarette Smoking: Stability and Transition to Abstinence in Young Adults", 2022, Nicotine & Tobacco Research

Frequent publication venues for Ryan S. Trim include:

  • Journal of Traumatic Stress
  • Drug and Alcohol Dependence
  • Psychology of Addictive Behaviors
  • Psychological Trauma Theory Research Practice and Policy
  • Nicotine & Tobacco Research

Ryan collaborates regularly with several co-authors in their research projects. These frequent co-authors are:

  • Sonya B. Norman
  • Jessica C. Tripp
  • Abigail C. Angkaw
  • Moira Haller
  • Brittany Davis

The researcher's work contributes to understanding the complex dynamics between PTSD symptoms and substance use disorders, examining treatment efficacy, clinical markers predicting treatment dropout, and behavioral transitions linked to tobacco use. The integration of mental health and substance use disorder research emphasizes both clinical applications and public health implications.

Best Publications

  • Adolescent substance use.

    Laurie Chassin;Andrea Hussong;Manuel Barrera;Brooke S. G. Molina

  • Marker or mediator? The effects of adolescent substance use on young adult educational attainment

    Kevin M. King;Barbara T. Meehan;Ryan S. Trim;Laurie Chassin

  • Efficacy of Integrated Exposure Therapy vs Integrated Coping Skills Therapy for Comorbid Posttraumatic Stress Disorder and Alcohol Use Disorder: A Randomized Clinical Trial.

    Sonya B Norman;Ryan Trim;Ryan Trim;Moira Haller;Moira Haller;Brittany C Davis

  • White Matter Integrity, Substance Use, and Risk Taking in Adolescence

    Joanna Jacobus;Rachel E. Thayer;Ryan S. Trim;Sunita Bava

  • A prospective study of the Acquired Preparedness Model: the effects of impulsivity and expectancies on smoking initiation in college students.

    Neal Doran;Rubin Khoddam;Patricia E. Sanders;C. Amanda Schweizer

  • Sibling influence on alcohol use in a young adult, high-risk sample.

    Ryan S. Trim;Eileen Leuthe;Laurie Chassin

  • The Relationships of the Level of Response to Alcohol and Additional Characteristics to Alcohol Use Disorders Across Adulthood: A Discrete‐Time Survival Analysis

    Ryan S. Trim;Marc A. Schuckit;Tom L. Smith

  • Adolescent substance use disorders.

    Laurie Chassin;Jennifer Ritter;Ryan S. Trim;Kevin M. King

  • A comparison of factors associated with substance-induced versus independent depressions.

    Marc A. Schuckit;Tom L. Smith;George P. Danko;Juliann Pierson

  • Blood alcohol concentrations among bar patrons: a multi-level study of drinking behavior.

    John D. Clapp;Mark B. Reed;Jong W. Min;Audrey M. Shillington

  • Neighborhood socioeconomic status effects on adolescent alcohol outcomes using growth models: Exploring the role of parental alcoholism

    Ryan S. Trim;Laurie Chassin

  • The relation between adolescent substance use and young adult internalizing symptoms: findings from a high-risk longitudinal sample.

    Ryan S. Trim;Barbara T. Meehan;Kevin M. King;Laurie Chassin

  • An evaluation of the full level of response to alcohol model of heavy drinking and problems in COGA offspring.

    Marc A. Schuckit;Tom L. Smith;George P. Danko;Ryan Trim

  • The Self-Rating of the Effects of Alcohol Questionnaire as a Predictor of Alcohol-Related Outcomes in 12-Year-Old Subjects

    Marc A. Schuckit;Tom L. Smith;Ryan S. Trim;Jon Heron

  • Thinking and Drinking: Alcohol-Related Cognitions across Stages of Adolescent Alcohol Involvement

    Nicole M. Bekman;Kristen G. Anderson;Ryan S. Trim;Jane Metrik

  • A Prospective Evaluation of How a Low Level of Response to Alcohol Predicts Later Heavy Drinking and Alcohol Problems

    Marc A. Schuckit;Tom L. Smith;Ryan S. Trim;Rhonda C. Allen

  • Impulsivity Dimensions and Risky Sex Behaviors in an At-Risk Young Adult Sample

    Inga Curry;Jeremy W Luk;Ryan S Trim;Ryan S Trim;Christian J Hopfer

  • Bidirectional relationship of posttraumatic stress disorder (PTSD) symptom severity and alcohol use over the course of integrated treatment

    Jessica C. Tripp;Matthew J. Worley;Elizabeth Straus;Abigail C. Angkaw

  • Trauma-Related Guilt: Conceptual Development and Relationship With Posttraumatic Stress and Depressive Symptoms

    Kendall C. Browne;Ryan S. Trim;Ryan S. Trim;Ursula S. Myers;Sonya B. Norman

  • Unique and interactive effects of impulsivity facets on reckless driving and driving under the influence in a high-risk young adult sample.

    Jeremy W. Luk;Ryan S. Trim;Kenny A. Karyadi;Inga Curry

  • fMRI Differences Between Subjects with Low and High Responses to Alcohol During a Stop Signal Task

    Marc A. Schuckit;Susan Tapert;Scott C. Matthews;Martin P. Paulus

  • Comorbid depression and substance use disorder: Longitudinal associations between symptoms in a controlled trial

    Matthew J. Worley;Ryan S. Trim;Scott C. Roesch;Jennifer Mrnak-Meyer

  • Role of risk factors proximate to time of trauma in the course of PTSD and MDD symptoms following traumatic injury.

    Sonya B. Norman;Ryan S. Trim;Abigail A. Goldsmith;Joel E. Dimsdale

Frequent Co-Authors

Marc A. Schuckit
Marc A. Schuckit University of California, San Diego
Sonya B. Norman
Sonya B. Norman University of California, San Diego
Sandra A. Brown
Sandra A. Brown University of California, San Diego
Laurie Chassin
Laurie Chassin Arizona State University
Kevin M. King
Kevin M. King University of Washington
John D. Clapp
John D. Clapp University of Southern California
John K. Hewitt
John K. Hewitt University of Colorado Boulder
Susan F. Tapert
Susan F. Tapert University of California, San Diego
Alan N. Simmons
Alan N. Simmons University of California, San Diego
Kathleen K. Bucholz
Kathleen K. Bucholz Washington University in St. Louis

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