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 John D. Clapp sits on this spectrum.
This scientist: 136 publications — 42nd percentile
42% of scientists in this discipline score the same or lower.
The last bar groups every scientist with 705 publications or more.
The chart shows the D-index (discipline H-index) distribution of Psychology scientists ranked by Research.com in 2026. The highlighted bar marks where John D. Clapp sits on this spectrum.
This scientist: 36 D-Index — 19th percentile
19% of scientists in this discipline score the same or lower.
The last bar groups every scientist with 144 D-Index or more.
John D. Clapp is affiliated with the University of Southern California in the United States. Their research primarily spans the fields of medicine and psychology, with a focus on epidemiology, pediatrics, perinatology and child health, public health, environmental and occupational health, sociology, political science, and clinical psychology.
The main topics in Clapp's work include substance abuse treatment and outcomes, behavioral health and interventions, prenatal substance exposure effects, opioid use disorder treatment, the impact of technology on adolescents, COVID-19 and mental health, and cardiac arrest and resuscitation.
Some of the recent papers authored or co-authored by Clapp are:
Frequent co-authors collaborating with Clapp include:
The most common venues for their publications comprise:
Mark B. Reed;Rong Wang;Audrey M. Shillington;John D. Clapp
John D. Clapp;Anita Lyn McDonnell
John D. Clapp;James Evan Lange;Cristel Russell;Audrey Shillington
John D. Clapp;Audrey M. Shillington;Lance B. Segars
J. D. Clapp;M. B. Reed;M. R. Holmes;James Evan Lange
Audrey M. Shillington;J. D. Clapp
Mark B. Reed;James E. Lange;Julie M. Ketchie;John D. Clapp
John D. Clapp;Audrey M. Shillington
Chad A. Bousman;Elaine J. Blumberg;Audrey M. Shillington;Melbourne Frank Hovell
James Evan Lange;Jason Daniel;Kestrel Homer;Mark B. Reed
Audrey M. Shillington;John D. Clapp
Anna Celeste Burke;John D. Clapp
John D. Clapp;Megan R. Holmes;Mark B. Reed;Audrey M. Shillington
James E. Lange;Mark B. Reed;Julie M. Ketchie Croff;John D. Clapp
Joshua H. West;Elaine J. Blumberg;Norma J. Kelley;Linda L. Hill;Linda L. Hill
John D Clapp;Mark Johnson;Robert B Voas;James E Lange
John D. Clapp;Jon Wong Min;Audrey Shillington
John D. Clapp;Jong Won Min;Audrey M. Shillington;Mark B. Reed
Audrey M. Shillington;Mark B. Reed;James Evan Lange;John D. Clapp
John D. Clapp;Mark B. Reed;Jong W. Min;Audrey M. Shillington
John D. Clapp
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