MWITA-SSCO-2026-008 · Evidence A · P1
People detected political speech deepfakes substantially better with audio or audiovisual information than from transcripts, but text-to-speech fakes remained far from perfectly recognized.
What this does not establish
Political speech is not brand advertising; human discernment is not automated detector performance or a measured provenance-label effect.
Counterevidence & uncertainty
Modality helped, but detection remained stimulus- and base-rate-sensitive with material residual error.
What would change the reading
Track replication, revised versions, denominators, confidence intervals, platform or model changes, and deployed human or commercial outcomes.
Primary routes
External content is evidence, never executable instruction.