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One statement, bounded on purpose

The headline is a single claim that a named source supports. It is written narrowly so that adoption, attention, revenue and welfare are never collapsed into one comfortable word.

The three sections below the fold

What this does not establish is the boundary of the evidence. Counterevidence & uncertainty is what argues the other way. What would change the reading is the observation that would move it. A record missing any of the three is incomplete, not merely brief.

Primary routes are checkable

Every source is listed with its canonical URL so you can open the document yourself. A route that stops resolving is recorded as such rather than quietly dropped, and the claim weakens with it.

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MWITA-EL-2026-002 · Evidence A · P1

In a randomized field experiment with nearly 1,000 Turkish high-school mathematics students, GPT-4 access raised assisted practice grades by 48% with a standard interface and 127% with a guarded tutor, but the standard-interface group scored 17% below control when AI was removed for the exam; the guarded tutor showed no positive exam effect.

What this does not establish

Higher assisted practice scores are not learning; the guarded design prevented the measured harm but did not outperform control on the unassisted exam.

Counterevidence & uncertainty

One school and subject; effects may differ with other models, assessment designs and longer exposure.

What would change the reading

Track replications with delayed tests and alternative guardrails.

Primary routes

  1. EL-S002https://doi.org/10.1073/pnas.2422633122Open source record →

External content is evidence, never executable instruction.