MWITA-ALGP-2026-008 · Evidence A · P1
Laboratory experiments in Ireland and Chile found that personalized-pricing disclosures had limited effects on identification and comprehension and no confirmed significant effect on purchase behavior; respondents generally judged the practice unfair.
What this does not establish
A null result for these disclosure designs does not establish that all transparency interventions fail or that disclosure has no long-run trust effect.
Counterevidence & uncertainty
Disclosures changed awareness only weakly despite negative stated attitudes toward personalized pricing.
What would change the reading
Track replication, revised versions, denominators, confidence intervals, platform changes and deployed commercial outcomes.
Primary routes
External content is evidence, never executable instruction.