MWITA-LPPO-2026-010 · Evidence A · P1
An unconditional physical gift increased immediate store spending, but the evidence did not establish that a physical gift outperformed an equal voucher.
What this does not establish
First field test was block-randomized by time and measured short-run basket, not retention; second field N is absent from accessible text.
Counterevidence & uncertainty
Gifts beat control, but physical form did not securely beat the voucher alternative.
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.