Editing Readability (section)

=== Gray and Leary ===

Gray and Leary analyzed 228 variables that affect reading ease and divided them into four types: content, style, format, and organization. They found that content was most important, followed closely by style. Third was format, followed closely by organization. They found no way to measure content, format, or organization—but they could measure variables of style. Among the 17 significant measurable style variables, they selected five to create a formula:

* Average [[sentence (linguistics)|sentence length]]
* Number of different hard words
* Number of [[personal pronoun]]s
* Percentage of unique words
* Number of [[prepositional phrase]]s