Leonard Jason

my newest publication. Jason, L.A., Ruesink, L., Furst, J., & Katz, B.Z. (2026). A research classification for Long COVID: Symptom frequency and severity improve accuracy of machine learning models. Chronic Diseases and Translational Medicine, e70044, doi.org/10.1002/cdt3.7….

Thank you to everyone who sent birthday wishes. I’m officially 77, which means I now qualify as a longitudinal study. In celebration, I’m sharing a song that captures the spirit of aging gracefully (or at least humorously). youtu.be/yTdisL8zVjY

Turning 77 today. According to the latest analysis: The body shows some statistically significant wear and tear. The mind still generates too many research ideas. The heart is grateful for the amazing people in my life. Conclusion: More data are needed.

From the DePaul group: Tuzzolino, K., Furst, J. & Jason, L.A. (2026). Identifying Post-Exertional Malaise subtypes: Differentiating physical and mental PEM manifestations. Journal of Health Psychology. Published online 3/28/2026. doi.org/10.1177/135910…

Jason, L.A., Furst, J., Worth, R., & Katz, B.Z. (2026). Outcomes of MECFS following Infectious Mononucleosis Seven-year follow-up of a prospective study. Frontiers in Medicine,13:1676628. frontiersin.org/journals/medic… /full

(2026, Feb. 16). Karen Hawkins. Job search burnout is real. Here’s how technology can help url-media.com/urhired-job-se…

Links to a Death Clock podcast, with over 100K people, on ME/CFS that was released today: Spotify open.spotify.com/show/4TkffkrQw… Apple Podcasts

(2026, Feb 11). Vernita Perkins and Leonard A. Jason. Psychology Today Blog.Who Can Afford to Spend Money? The psychological and socioeconomic impact of massive job cuts. psychologytoday.com/us/blog/the-me…

Launer, S.J., Sikora, A., & Jason, L.A. (2026). Recovery outcomes of Oxford House residents with severe and moderate psychiatric conditions. Journal of Modern Nursing Practice and Research, 6(1): 1. doi.org/10.53964/jmnpr…

(2025, Jan 26). Vernita Perkins and Leonard A. Jason. Psychology Today Blog. Hidden Psychological Costs of Misappropriated Black Imagery. psychologytoday.com/us/blog/the-me…

Jason, L.A., Light, J.M., Krause, R., & Sikora, A. (2026). The effect of supportive familial relationships on social networks and recovery. Journal of Substance Use and Addiction Treatment, 183. doi.org/10.1016/j.josa… authors.elsevier.com/a/1mTZ3AUkM2is…

Vernita Perkins and Leonard A. Jason. Psychology Today Blog. Essential Characteristics of a Great Manager: Ethical standards are critical. psychologytoday.com/us/blog/the-me…

Bell, J. S., Clifton, J. D. W., Saquib, S., Ferrari, J. R., Snow-Hill, N. L., & Jason, L. A. (2025). Primal world beliefs support substance use disorder recovery: Impact on recovery capital and spirituality. Journal of Prevention & Intervention in the Community, 53(4), 630–644.

Just published from the DePaul group: Jason, L.A., Furst, J., Ruesink, L., & Katz, B.Z. (2025). Developing a Long COVID case definition: Using machine learning to distinguish Long COVID based on symptom presentation. COVID. 5, 205. mdpi.com/2673-8112/5/12…

(Dec. 5, 2025). Le Monde. causeshttps://www.lemonde.fr/sciences/article/2025/12/05/creer-une-science-parallele-des-symptomes-conduirait-les-medecins-a-s-exonerer-de-la-recherche-des-causes-organiques_6656114_1650684.html

(2025, Nov. 17). Vernita Perkins and Leonard A. Jason. Psychology Today Blog. Navigating Job Loss Anxiety. Shifting your focus during job loss can bring new opportunities psychologytoday.com/us/blog/the-me…

(Oct. 31, 2025). Miriam E. Tucker. Medscape. No Evidence Supports Using Graded Exercise for Myalgic Encephalomyelitis/Chronic Fatigue Syndrome. medscape.com/viewarticle/no…

(2025, Oct. 16). Vernita Perkins and Leonard A. Jason. Psychology Today Blog. Unpacking How to Rebuild Trust When It's Gone. What your body and mind tell you about trust. psychologytoday.com/us/blog/the-me…

Jason, L.A., &. Chee, K.J. (2025). A brief, comprehensive measure of post-exertional malaise. Exploration of Neuroprotective Therapy, 5:1004116. doi.org/10.37349/ent.2…