2026 Leonard A. Jason: Psychology Researcher – H-Index, Publications & Awards

Discipline name	D-Index	World Ranking	Current World Ranking	National Ranking	Current National Ranking	Publications	Citations
Psychology	81	1381	1230	828	720	849	26264

Research.com Recognitions

2015 - APA Award for Distinguished Professional Contributions to Applied Research
1983 - Fellow of the American Psychological Association (APA)

Overview

Leonard A. Jason is affiliated with DePaul University in the United States and has made significant contributions to the fields of Medicine and Health Professions. Their research spans a range of subfields including General Health Professions, Psychiatry and Mental Health, Clinical Psychology, Epidemiology, and Neurology.

The primary focus of their work involves topics such as Fibromyalgia and Chronic Fatigue Syndrome Research, Homelessness and Social Issues, Substance Abuse Treatment and Outcomes, Long-Term Effects of COVID-19, Health Disparities and Outcomes, COVID-19 and Mental Health, and broader Health, Psychology, and Well-being.

Recent publications include:

ME/CFS and Post-Exertional Malaise among Patients with Long COVID (2022), published in Neurology International
COVID-19 Symptoms Over Time: Comparing Long-Haulers to ME/CFS (2021), published in Fatigue Biomedicine Health & Behavior
Updating the National Academy of Medicine ME/CFS Prevalence and Economic Impact Figures to Account for Population Growth and Inflation (2021), published in Fatigue Biomedicine Health & Behavior

Other papers relevant to their research interests but authored by collaborators include:

Post-Viral Fatigue and COVID-19: Lessons from Past Epidemics (2020), published in Fatigue Biomedicine Health & Behavior
Medical Care Situation of People with Myalgic Encephalomyelitis/Chronic Fatigue Syndrome in Germany (2021), published in Medicina

Their frequent co-authors include Ted J. Bobak, Mohammed F. Islam, Mayra Guerrero, Joseph Cotler, and John M. Light.

Leonard A. Jason has published extensively in venues such as:

Fatigue Biomedicine Health & Behavior
Alcoholism Treatment Quarterly
Journal of Community Psychology
Journal of Prevention & Intervention in the Community
Journal of Social Work Practice in the Addictions

The researcher's work has been recognized through awards including the APA Award for Distinguished Professional Contributions to Applied Research in 2015 and fellowship in the American Psychological Association established in 1983.

Best Publications

A community-based study of chronic fatigue syndrome.

Leonard A. Jason;Judith A. Richman;Alfred W. Rademaker;Karen M. Jordan

1129
Citations
Identification of ambiguities in the 1994 chronic fatigue syndrome research case definition and recommendations for resolution.

William C Reeves;Andrew Lloyd;Suzanne D Vernon;Nancy Klimas

545
Citations
A social stress model of substance abuse.

Jean E. Rhodes;Leonard A. Jason

410
Citations
Active enforcement of cigarette control laws in the prevention of cigarette sales to minors.

Leonard A. Jason;Peter Y. Ji;Michael D. Anes;Scott H. Birkhead

404
Citations
Pretrauma risk factors for posttraumatic stress disorder: A systematic review of the literature

Julia A. DiGangi;Daisy Gomez;Leslie Mendoza;Leonard A. Jason

384
Citations
Participatory Community Research: Theories and Methods in Action

Leonard A. Jason;Christopher B. Keys;Yolanda Suarez-Balcazar;Renée R. Taylor

315
Citations
The need for substance abuse after-care: Longitudinal analysis of Oxford House

Leonard A. Jason;Leonard A. Jason;Margaret I. Davis;Margaret I. Davis;Joseph R. Ferrari;Joseph R. Ferrari

283
Citations
Social network variables in alcoholics anonymous: A literature review

D. R. Groh;Leonard A. Jason;C. B. Keys

276
Citations
Communal Housing Settings Enhance Substance Abuse Recovery

Leonard A. Jason;Bradley D. Olson;Joseph R. Ferrari;Anthony T. Lo Sasso

261
Citations
Post-viral fatigue and COVID-19: lessons from past epidemics

Mohammed F. Islam;Joseph Cotler;Leonard A. Jason

244
Citations
Earn per view television viewing regulation device

Leonard A. Jason

240
Citations
Preventing substance abuse among children and adolescents

Jean E. Rhodes;Leonard A. Jason

227
Citations
Pilot Study Examining Factors Associated with Academic Success for Hispanic High School Students.

Olga Reyes;Leonard A. Jason

219
Citations
The Development of a Revised Canadian Myalgic Encephalomyelitis Chronic Fatigue Syndrome Case Definition

Leonard A. Jason;Meredyth Evans;Nicole Porter;Molly Brown

218
Citations
Understanding Chronic Fatigue Syndrome: An Empirical Guide to Assessment and Treatment

Fred Friedberg;Leonard A. Jason

216
Citations
The Economic impact of ME/CFS: Individual and societal costs

Leonard A. Jason;Mary C. Benton;Lisa M. Valentine;Abra Johnson

209
Citations
Chronic Fatigue Syndrome: The Need for Subtypes

Leonard A. Jason;Karina Corradi;Susan Torres-Harding;Renee R. Taylor

201
Citations
What is fatigue? Pathological and nonpathological fatigue.

Leonard A. Jason;Meredyth Evans;Molly Brown;Nicole Porter

192
Citations
Pacing as a strategy to improve energy management in myalgic encephalomyelitis/chronic fatigue syndrome: a consensus document

Ellen M. Goudsmit;Jo Nijs;Leonard A. Jason;Karen E. Wallman

178
Citations
Researching community psychology : issues of theory and methods

Patrick Tolan;Christopher Keys;Fern Chertok;Leonard A. Jason

163
Citations
Handbook of Methodological Approaches to Community-Based Research: Qualitative, Quantitative, and Mixed Methods

Leonard A. Jason;David S. Glenwick

117
Citations
Stress and coping: the roles of ethnicity and gender in substance abuse recovery.

Justin T. Brown;Margaret I. Davis;Leonard A. Jason;Joseph R. Ferrari

15
Citations

Frequent Co-Authors

Joseph R. Ferrari DePaul University

Judith A. Richman University of Illinois at Chicago

Susan D. McMahon DePaul University

Christopher B. Keys DePaul University

Brian R. Flay Boise State University

G. Anne Bogat Michigan State University

Warren W. Tryon Fordham University

Jean E. Rhodes University of Massachusetts Boston

John F. Kelly Harvard University

Carol S. North The University of Texas Southwestern Medical Center

External Links

Wikipedia of Leonard A. Jason Personal website of Leonard A. Jason

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