What is Dale–Chall formula?
The '''Dale–Chall formula''' is one of the ways to predict how difficult text is to read. It is a [[readability test]].<ref> Klare G.R. 1963. ''The measurement of readability''. Iowa State University Press, Ames IA.</ref> The Dale–Chall formula is a one-[[variable]] test: it measures the difficulty of the words used. It does not measure the difficulty of the sentence structure (the [[syntax]]). One of the first readability tests, the Dale–Chall formula used a [[vocabulary]] list. It counted the number of listed words in a passage, and applied a [[formula]] which gave a [[grade level]]. It was used to rate [[textbook]]s for grade levels in US [[school district]]s. In 1995 the authors published an updated word list.<ref>Chall, Jeanne S. and Edgar Dale. 1995. ''Readability revisited: The new Dale–Chall readability formula''. Cambridge, MA: Brookline Books</ref> It is easy, in principle, to use a vocabulary list as part of a [[computer]]-based readability measure. The list is organised as a [[look-up table]]. The percentage of listed words in a passage gives the data for the formula, and the user is presented with a grade level. == Related pages == *[[List of readability tests]] *[[Textual difficulty]] == References == {{Reflist}} {{DEFAULTSORT:Dale-Chall formula}} [[Category:Reading]]