Exposure therapy now sits at the center of evidence-based treatment for post-traumatic stress disorder, and its modern form is inseparable from the work of Edna Foa, who has died at the age of 88. Her research and clinical protocols shifted PTSD from avoidance and symptom management toward direct engagement with traumatic memories.
Trained as a clinical psychologist and grounded in cognitive behavioral therapy, Foa argued that fear circuits in the brain could be altered through systematic, repeated confrontation with the very cues that triggered panic and flashbacks. In prolonged exposure, patients recount their trauma in detail and enter avoided situations in a controlled way, allowing extinction learning and fear habituation to take hold rather than reinforcing avoidance patterns.
Foa developed manuals, randomized controlled trials and large-scale implementation projects that turned exposure therapy from a theoretical idea into a clinical standard. Her work influenced treatment guidelines, reshaped how clinicians understand anxiety disorders more broadly, and opened a path for survivors of war, assault and disaster to regain daily functioning through structured encounters with what once felt unbearable.
