BS in psychology from the University of Texas

PsyD in clinical psychology from George Washington University

Predoctoral internship at Pathways Community Health in Missouri

Fellowship in Psychoanalytic Studies at the Austen Riggs Center

Board Certified by the American Board and Academy of Psychoanalysis

Jeremy M. Ridenour, PsyD, ABPP, is the director of psychological testing, associate director of admissions, and a staff psychologist at the Austen Riggs Center. He is also the chair of the Erikson Scholar Search Committee.

He has written and presented on schizophrenia, paranoia, personality disorders, and psychological testing.

Professional Affiliations/Organizational Memberships

Psychotherapeutic treatment of individuals with schizophrenia-spectrum disorders with a particular focus in understanding how targeting mentalization (i.e. how people think about self and other) can be an important focus for recovery. In addition, he has conducted psychological assessment research on personality disorders and psychosis

Leadership

Administrative Staff

Admissions Staff

Therapy Staff

Jeremy Ridenour, PsyD, ABPP, is the associate director of admissions and the director of psychological testing at the Austen Riggs Center.

Jeremy Ridenour, PsyD, ABPP

Associate Director of Admissions/Director of Psychological Testing

PhD in clinical psychology from the Brooklyn campus of Long Island University

Pre-doctoral internship and postdoctoral fellowship at Albany Medical Center

Katie C. Lewis, PhD, is the director of research and medical staff member at the Austen Riggs Center. Her research focuses on examining personality processes in adults diagnosed with complex psychopathology as they relate to suicidal and self-destructive behaviors. Her research has been supported by the Robert Wallerstein Fellowship in Psychoanalytic Research (San Francisco Center for Psychoanalysis), a Young Investigator Grant through the American Foundation for Suicide Prevention, an Exploratory/Developmental Research Grant through the NIMH, and the APF/Division 39 Marsha McCary Grant for Psychoanalytic Research.

She has published and presented on a wide range of topics including suicide and self-harming behaviors, personality psychopathology and assessment, and the ethics of confidentiality in clinical writing. Dr. Lewis is a licensed clinical psychologist in New York and Massachusetts and operates a small private psychotherapy practice in addition to her work at Austen Riggs.

Former graduate student representative on the Ethics Board of Division 39

Former Fellow of the American Psychoanalytic Association (ApsaA)

Former Fellow, Psychoanalytic Research Training Program, Yale University School of Medicine

Founding member of the College of Research Fellows at APsaA

Board of the Society for Personality Assessment Representative at Large (2023-2026)

Fellowship Committee member, American Psychoanalytic Association

Consulting editor and special section editor (Clinical Applications and Case Studies) for the 

American Association of Suicidology Professional Poster Award (2019)

PPRS Stuart Hauser Memorial Poster Award (2014)

Long Island University's Dissertation Award (2014)

Suicide, personality disorders, ecological momentary assessment, psychic pain, personality assessment

Erikson Institute Staff

Katie Lewis, PhD, is the director of research at the Austen Riggs Center.

Katie Lewis, PhD

Director of Research

MS in counseling psychology with an emphasis in marriage and family therapy from California Lutheran University

PsyD in clinical psychology from California Lutheran University

Fellowship in Infant-Parent Mental Health at the University of Massachusetts Boston

Fellowship in psychoanalytic studies at the Austen Riggs Center

Daniel Knauss, PsyD, ABPP, is the director of training and a staff psychologist at the Austen Riggs Center. Dr. Knauss also coordinates the Grand Rounds at Austen Riggs.

Dr. Knauss has worked clinically in a variety of settings including private practice, community mental health, university counseling centers, medical centers, and residential treatment settings.

Dr. Knauss is an active presenter at national and international conferences and has published in peer-reviewed journals. He currently serves on the Editorial Board for 

, formerly served on the Editorial Board of the 

Journal of the American Psychoanalytic Association

 and is vice-chair of the Austen Riggs Center Institutional Review Board. Dr. Knauss has a passion for education, having taught undergraduate and graduate level psychology courses at private and public universities and has experience providing clinical supervision to psychology graduate students.

Member at large on the Board of The Society for Psychoanalysis and Psychoanalytic Psychology (SPPP), Division 39, The American Psychological Association

Mentalization-informed approaches to treatment, infant and early-childhood mental health, and working with expectant parents.

Psychology

Director of Training/Staff Psychologist/Grand Rounds Coordinator

; and their colleagues published "Card Pull Effects of the Thematic Apperception Test Using the Social Cognition and Object Relations-Global Rating Method on Complex Psychiatric Sample" in 

From the publisher: "The present study expands on prior work by examining sources of variance in SCORS-G dimensions and card pull effect patterns in an adult clinical sample characterized by high psychiatric comorbidity and clinical severity."

Professional Publications

Several Riggs staff members explore the stimulus pull effects on respondent narratives to the Thematic Apperception Test

Card Pull Effects of the Thematic Apperception Test

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