Evidence Record

Evidence summary

A systematic review found that guidelines for plain-language summaries contain many criteria, but direct empirical support was absent for most of them.

Exact claim supported or contradicted

Contradicts treating popular plain-language rules as a validated, complete theory of effective communication.

Source provenance

Peer-reviewed systematic review integrating theory, guidelines, and empirical studies. Full text was available through PubMed Central.

Relevant excerpt or data

The authors explicitly report that they did not find empirical evidence supporting most identified criteria.

Interpretation

The project must test bundles and mechanisms, preserve uncertainty, and avoid converting style guidance into universal laws.

Limitations

The review concerns plain-language summaries of research, not all procedural or persuasive communication. Absence of evidence is not evidence of no effect.

Counterevidence

Individual controlled studies do demonstrate benefits for specific plain-language formats and outcomes.

Reproduction or verification notes

Inspect the full-text methods, evidence mapping, and discussion at the source URI.