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John P.A. Ioannidis

Professor of Medicine, of Health Research and Policy, and of Statistics

John P.A. Ioannidis, MD, DSc C.F. Rehnborg Chair in Disease Prevention Professor of Medicine Professor of Health Research and Policy Director, Stanford Prevention Research Center (SPRC) Stanford University School of Medicine Professor of Statistics (by courtesy) Stanford University School of Humanities and Sciences Co-Director, Meta-Research Innovation Center at Stanford (METRICS) Member, Stanford Cancer Institute Member, Stanford Cardiovascular Institute Affiliate, Stanford Center on Longevity Affiliated faculty, Woods Institute for the Environment Member, Stanford Center for Population Health Sciences Senior Fellow, Stanford Center for Innovation in Global Health Program Director, PhD in Epidemiology and Clinical Research, Stanford University

“Is there a reproducibility crisis and should something be done about it?”


There is a lot of debate about the presence and extent of a reproducibility crisis in psychological science and multiple other scientific disciplines. The keynote will explore the evidence that can inform this debate, collating information and evidence from diverse scientific disciplines. It will also discuss different solutions that have been proposed and/or tested and validated for improving the credibility and utility of research efforts. Finally, it will make some suggestions about less explored and unexplored areas that may better inform the debate and further strengthen research practices.

Short bio

C.F. Rehnborg Chair in Disease Prevention at Stanford University, Professor of Medicine, and of Health Research and Policy, at the School of Medicine; Professor of Statistics (by courtesy) at the School of Humanities and Sciences; co-Director, Meta-Research Innovation Center at Stanford; Director of the PhD program in Epidemiology and Clinical Research.

I was born in New York City in 1965 and grew up in Athens, Greece. Valedictorian (1984) at Athens College; National Award of the Greek Mathematical Society (1984); graduated (top rank of medical school class) from the University of Athens in 1990; also received a doctorate in biopathology from the same institution. Trained at Harvard and Tufts (internal medicine and infectious diseases), then held positions at NIH, Johns Hopkins and Tufts. Chaired the Department of Hygiene and Epidemiology, University of Ioannina Medical School in 1999-2010 (tenured professor since 2003). Adjunct faculty for Tufts University since 1996 (professor rank since 2002), Director (2008-2010) of the the Center for Genetic Epidemiology and Modeling; also adjunct professor of epidemiology at Harvard School of Public Health and visiting professor of epidemiology and biostatistics at Imperial College.

Member of the executive board of the Human Genome Epidemiology Network and Senior Advisor on Knowledge Integration at NCI/NIH (2012-6); served as President, Society for Research Synthesis Methodology, and editorial board member of many leading journals (including PLoS Medicine, Lancet, Annals of Internal Medicine, JNCI, Science Translational Medicine, Clinical Chemistry, Molecular and Cellular Proteomics, AIDS, IJE, JCE, Clinical Trials, and PLoS ONE, among others) and as Editor-in-Chief of the European Journal of Clinical Investigation (2010-now). Delivered over 400 invited and honorary lectures.

Recipient of many awards (e.g. European Award for Excellence in Clinical Science [2007], Medal for Distinguished Service, Teachers College, Columbia University [2015]). Inducted in the Association of American Physicians (2009), European Academy of Cancer Sciences (2010) Americal Epidemiological Society (2015), and European Academy of Sciences and Arts (2015). Honorary titles from the Foundation for Research and Technology-Hellas (FORTH) (2014) and University of Ioannina (2015) and honorary doctorate from Erasmus University Rotterdam (2015). The PLoS Medicine paper on “Why most published research findings are false” has been the most-accessed article in the history of Public Library of Science (~2 million hits). Author of 6 literary books in Greek, two of which (“Toccata for the Girl with the Burnt Face” (Kedros 2012) and “Variations on the Art of the Fugue and a Desperate Ricercar” (Kedros 2014)) were shortlisted for best book of the year Anagnostis awards. Brave Thinker scientist for 2010 according to Atlantic, “may be one of the most influential scientists alive”. Author of >800 papers in peer-reviewed journals, 68% of papers as single/first/last author. Among the most-cited scientists worldwide according to citation databases for which rankings are available (Web of Science/Highly-Cited Researchers, Scopus, Microsoft Academic Search). Among the 50 most-cited scientists across all 20+ million authors publishing across science according to current citation rate (>2,000 new citations per month per Google Scholar, >1000 new citations per month per Scopus or ISI Web of Knowledge). Citation indices: h=148, m=6.7 per Google Scholar (h=120 per ISI and Scopus).

I consider myself privileged to have learned and to continue to learn from interactions with students and young scientists (of all ages) from all over the world and I love to be constantly reminded that I know next to nothing.



Disease Prevention
Meta-Research Innovation
Humanities and Sciences
Epidemiology and Clinical Research