Reading materials are considered having high readability if readers are interested to read the materials, understand the content of the materials and able to read the materials fluently. In contrast, reading materials with low readability discourage readers from reading the materials, create difficulties for readers to understand the content of…

Background: Readability tests are indicators that measure how easy a document can be read and understood. Simple, but very often ignored, readability statistics cannot only provide information about the level of difficulty of the readability of particular documents but also can increase an evaluator's credibility. Purpose: The purpose of this…

Discussion of the notion of readability focuses on predicting readability with computerized readability formulas. Semantic and syntactic factors are discussed, the development of readability formulas is described, and five commercially available computer readability formulas are reviewed, including the Readability Estimator, Readability Formulas,…