Communication · Executive Insight Brief · 390
Inspect what drives the fog score
The final grade-like score is less useful than seeing whether sentence length, polysyllabic vocabulary, or both are driving the friction that needs editorial attention.
Premise
The Gunning Fog Index is an editorial screening device for prose that may have accumulated surface complexity. It combines average sentence length with the percentage of counted complex words and produces a grade-like estimate. For executives who commission policies, notices, or public information, its strongest use is not compliance with a target score. It is diagnosis: the two component measures tell a communication team what kind of textual burden deserves inspection before the message is tested with actual readers.
What the model is: Gunning Fog Index in Knowledge →

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- FamilyTool
- CategoryMeasurement & Assessment Instruments
- DomainMeaning & Clarity
What these mean
Editorial orientation · Family
Tool
In this series, Tool names the editorial family primarily used to act on, examine, measure or organize communication. It includes instruments, methods, practices, protocols, codes and institutional arrangements. Membership does not certify effectiveness, portability or safe use in every setting.
Editorial orientation · Category
Measurement & Assessment Instruments
Produces measures, scores, profiles or assessments through defined items, observations or measurement rules. The entry identifies what is measured and the conditions governing interpretation.
- KnowledgeGunning Fog Index
- Related briefPlain Language: Govern Written Communication by Reader Performance