Following a brief discussion of two facets of written material readability--reading ease and human interest--two reasons why written instructional material may be so difficult to read are considered: use of technical vocabulary and abstract language. Suggestions to make written instructional materials more readable are provided. (MBR)

Six readability formulas (Flesch, Kincaid-Flesch, Dale-Chall, Gunning-Fog, Raygor, and Fog) were used to evaluate 260 vocational textbooks. The formulas were effective in discriminating ease or difficulty. Human interest scores, but not writing style, were a strong factor in identifying accessible texts for special populations. (SK)

Finds that student perceptions of readability and interest levels in two upper-level college composition texts varied from the Flesch and the Fry readability and human interest formulas. (SR)

Some factors that should be considered when science teachers produce materials for their students are presented. Readability and the key aspects of language (vocabulary, sentence structure, textbook or examination style, and organization and presentation) are discussed. Directions and the graph needed for estimating the reading level of materials…

Two studies investigated the relationships between readability, prior knowledge, and interest in the material being read. In the first study, 169 college freshmen read cloze passages of materials from the Nelson-Denny Reading Tests, then one week later read the whole passages and completed the related multiple choice questions. A control group…

Readability formulas can be useful tools in accomplishing their primary purpose--to give very general estimates of difficulty. Unfortunately, there has been a great deal of misunderstanding regarding their use, which has resulted in misuse and abuse. The formulas were designed to be applied post hoc to existing materials. They were not intended to…

Writers and writing teachers should be wary of depending on readability indexes as indicators of the difficulty of written messages. The Gunning Fog Index and the Damerst Clear Index, two readability formulas, were used to determine the readability of "A Statement of Editorial Policy" and two abstracts appearing in an issue of…

The problems arising from treating word and sentence complexity as the direct causes of difficulty in comprehension are surveyed in this paper from the perspective of readability formulas. The basic choices and assumptions made in the development and use of readability formulas are discussed in relation to the larger question of text…

The reading abilities of low achieving high school students at two schools were compared to the readability levels of the magazines in which they showed interest. The median tested reading ability of these students was reported as third/fourth grade by their reading teachers. The reading specialist at one high school reported that boys had an…