The mental health community is mourning the reported death of Dr. Marsha Linehan, the American psychologist whose development of Dialectical Behavior Therapy (DBT) changed the way clinicians approach suicidal behaviour and borderline personality disorder.
Linehan reportedly died on November 10, 2026, at the age of 83. News of her passing was communicated by Linda Dimeff, director of the Portland DBT Institute, alongside members of the clinical community.
According to the announcement, Linehan spent her final moments surrounded by the love of her daughter, Geri. She had been admitted to UW Medical Center on October 31 after developing pneumonia. Her condition later led to a transfer to comfort care. Gregorian chant music, which she particularly enjoyed, was reportedly playing near the end of her life.
The psychologist behind Dialectical Behavior Therapy
Linehan’s most influential contribution was the creation of Dialectical Behavior Therapy, commonly known as DBT. She initially developed the treatment to help people experiencing suicidal behaviours, addressing a major challenge in psychological care.
Over time, DBT became an established approach for treating borderline personality disorder and other difficulties involving intense emotions and problems with emotional regulation.
Her work helped expand treatment options for people experiencing severe psychological distress. It also influenced therapists, researchers and mental health professionals who adopted the approach in clinical settings.
Her influence on research and clinical training
Linehan served as a professor emeritus at the University of Washington, where she contributed to psychological research, education and professional development.
She also established Behavioral Tech, an organisation associated with DBT training, and helped create the DBT-Linehan Board of Certification. These efforts supported the development of professional standards and consistency in the delivery of DBT treatment.
Beyond her academic achievements, colleagues remembered her as a mentor whose work demonstrated clinical courage and commitment. Her influence reached patients as well as professionals, particularly those who found new ways to manage suffering through the treatment she developed.
A legacy that continues through DBT
The announcement of her death also recognised the many current and former clients whose lives had been affected by her work. Members of the DBT community were encouraged to support one another while respecting the privacy of her daughter and other family members.
One of the central ideas associated with Linehan’s work was that even people facing profound emotional pain could develop skills to build meaningful lives. That outlook remains closely connected to the principles behind DBT.
Obituary: Dr. Marsha Linehan, an influential American psychologist and creator of Dialectical Behavior Therapy, reportedly died on November 10, 2026, aged 83.
Cause of Death: The announcement cited pneumonia and said she had been receiving comfort care. Further medical details were not provided.
Funeral Arrangements: Memorial arrangements and opportunities to honour her life had not been announced in the supplied report.
Disclaimer: This article reflects the information contained in the supplied announcement. Readers should refer to statements from her family, representatives or relevant institutions for confirmed updates.