Photo of Ruth Firmin, PhD

Ruth Firmin, PhD

McLean Hospital Title
Harvard Medical School Title
  • Instructor in Psychology, Department of Psychiatry


Ruth Firmin, PhD, is a staff psychologist at McLean OnTrack. Her clinical expertise is person-centered, evidence-based treatment of psychosis. Dr. Firmin specialized in treating serious mental illness throughout her doctoral work at Purdue University-Indianapolis, clinical internship at Yale School of Medicine, and post-doctoral fellowship at Brown University School of Medicine.

Dr. Firmin’s research investigates resiliency factors among those with psychosis. She received an NIMH T32 fellowship at UCLA to study the internalization of stigma and stigma resistance in first episode psychosis. Her work on stigma resistance has also been funded by the American Psychological Foundation, producing a measure that is being translated in over seven languages to study stigma resistance cross-culturally. Prior to working at McLean, Dr. Firmin was a clinical assistant professor at the Brown University School of Medicine.


Education & Training

  • 2011 BA in Psychology, Cedarville University
  • 2013 MS in Clinical Psychology, Purdue University-Indianapolis
  • 2017 PhD in Clinical Psychology, Purdue University-Indianapolis
  • 2016-2017 Pre-Doctoral Clinical Internship, Yale School of Medicine
  • 2017-2018 T32 Research Fellowship, University of California Los Angeles
  • 2018-2019 Post-Doctoral Clinical Fellowship, Brown University School of Medicine
Board Certifications:
  • 2019 Licensed Psychologist, State of Rhode Island
  • 2021 Licensed Psychologist, Board of Registration of Psychologists, Commonwealth of Massachusetts


Phone: 617.855.3610
Office Address: Belmont campus - Administration Building, Room GS092