Matt Vassar, Ph.D.

Clinical Assistant Professor of Psychiatry
and Behavioral Sciences

Oklahoma State University
Center for Health Sciences

Dr. Vassar’s research focuses on making research better: improving the conduct and reporting of clinical research and exploring the effects of bias on study outcomes.  He has published over 100 peer-reviewed articles in some of the most prestigious journals in medicine, including Journal of the American Medical Association (JAMA), JAMA Internal Medicine, JAMA Oncology, JAMA Neurology, JAMA Dermatology, JAMA Otolaryngology, Annals of Emergency Medicine, British Journal of Anaesthesia, Annals of Oncology, and European Urology. Dr. Vassar’s research has been featured in the New York Times, Science, Nature, the BMJ, Reuters Health, and many other national news outlets. His publications have made the top 5% of all research outputs on Altmetrics numerous times.

Dr. Vassar is firmly committed to mentoring the next generation of physicians and scientists.  His unique and highly innovative approach to mentorship has resulted in over 300 student authorships on peer-reviewed publications and hundreds of conference presentations. One-third of his students have been published in a #1 ranked journal in a clinical specialty, and 66% have published in a top 5 ranked clinical journal.  Dr. Vassar’s students have been awarded research grants from the Crohn’s and Colitis Foundation, the Cystic Fibrosis Foundation, and the American Academy of Child and Adolescent Psychiatry (AACAP). Dr. Vassar has also been awarded the AACAP Outstanding Mentor Award. Dr. Vassar focuses on the full development of the learner and trains them to write scientifically, submit manuscripts for publication, respond to reviewer comments, and work with media outlets following publication.  This training has produced a generation of students who have performed numerous peer reviews for academic journals, served on Cochrane review teams, provided input for the revision of reporting guidelines, gave plenary sessions at national conferences, and led independent research projects that went onto successful publication.  Click here to see Matt Vassar's CV

Research Interests

Systematic Review Methodology
Clinical Trial Design
Research Reporting
Conflicts of Interest


Ph.D. in Research, Evaluation, Measurement, and Statistics
Oklahoma State University

Masters of Business Administration
Oklahoma State University

Bachelor of Arts in Sociology
Oklahoma State University

Recent Publications: