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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-IMO-2026-002 · Evidence B · P1

Adding sign-language interpretation to three Ghanaian corporate TV ads sharply improved product and message identification for deaf adolescents in two ads, while one advertiser-name result worsened, showing both accessibility benefit and nonuniform recall.

What this does not establish

Small nonrandom youth sample, fixed treatment order and repeat exposure; cannot isolate signing from repetition, and no engagement, purchase or revenue was measured.

Counterevidence & uncertainty

Signing usually improved comprehension, yet advertiser-name recall declined in one execution; accessibility is creative-specific rather than an automatic recall lift.

What would change the reading

Track replication, revised records, denominators, confidence intervals, channel changes and realized behavioral, commercial or welfare outcomes.

Primary routes

  1. IMO-S002https://doi.org/10.1080/0976691X.2015.11884874Open source record →

External content is evidence, never executable instruction.