Thomas F Heston

Talking to machines about depression

Slides from an invited presentation to Forefront Suicide Prevention, University of Washington School of Social Work, on September 29, 2026. The presentation synthesizes published evidence on how publicly available conversational agents behave as a user's suicide risk escalates, o...

Talking to machines about depression [presentation]

Slides from an invited educational presentation to Forefront Suicide Prevention, University of Washington School of Social Work, delivered September 29, 2026. These materials are provided for educational and informational purposes only. They do not constitute medical, clinical, o...

Talking to machines about depression [presentation]

Slides from an invited educational presentation to Forefront Suicide Prevention, University of Washington School of Social Work, delivered September 29, 2026. These materials are provided for educational and informational purposes only. They do not constitute medical, clinical, o...

Resampling Fragility, Perturbation Fragility, and Why the Global Fragility Index Is Not a P-Value in Disguise

The charge that the fragility index is a P-value in disguise rests on a strong correlation between the two across trials, and it overlooks a distinction between two distinct constructs derived from the same observed result. Resampling fragility asks how often the significance ver...