Readability formulas may detract from textbook quality. They overlook text and reader characteristics that affect comprehension. Moreover, average "readability levels" ignore wide variations within texts and between scales. The shortened sentences and simplified vocabulary used to conform texts to formulas sacrifice precision and connectedness,…

"Writeability" is concerned with helping writers and editors produce materials on easier readability levels. A major input of most readability formulas is vocabulary difficulty. One way to increase readability is to use simple vocabulary or shorter words since word frequency studies show that more common words are shorter. The other…

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,…

The methodology used to determine readability of English texts (cloze procedure and word lists) is not applicable to foreign-language material. Linguistic variables are proposed as the basis for readability formulas. Contrastive and error analysis are possible strategies. (JB)