MWITA-AIAO-2026-009 · Evidence A · P1
Disclosing that both advertising copy and image were AI-produced reduced perceived advertising value and purchase intention, with credibility mediating the negative response.
What this does not establish
Self-reported value and intention are not purchase, reach, incremental revenue, campaign profit, or long-term brand trust.
Counterevidence & uncertainty
A performance cost of disclosure does not negate legal, ethical, autonomy, or informed-choice reasons to disclose.
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.