Spache Readability Formula

Spache Readability Formula

The Spache Readability Formula is a readability test for writing in English, designed by George Spache. It works best on texts that are for children up to fourth grade. For older children, the Dale-Chall Readability Formula is more appropriate.

It was introduced in 1952 in Spache's "A new readability formula for primary-grade reading materials," ("The Elementary School Journal", 53, 410-413), and has subsequently been revised.

Calculation

The method compares words in a text to a set list of everyday words. The number of words per sentence and the percentage of unfamiliar words determine the reading age.

The original formula was: :mbox{Grade Level} = left ( 0.141 imes mbox{Average sentence length} ight ) + left ( 0.086 imes mbox{Number of unique unfamiliar words} ight) + 0.839

The revised formula is: :mbox{Grade Level} = left ( 0.121 imes mbox{Average sentence length} ight ) + left ( 0.082 imes mbox{Number of unique unfamiliar words} ight) + 0.659

References

* [http://www.oleandersolutions.com/spache.html Page at Oleander Solutions]
* [http://www.glc.k12.ga.us/trc/cluster.asp?mode=browse&intPathID=4765 Teacher Resource Center] of the Georgia Department of Education

Further reading

*cite journal
author = Spache, G.
year = 1953
title = A New Readability Formula for Primary-Grade Reading Materials
journal = The Elementary School Journal
volume = 53
issue = 7
pages = 410–413
url = http://links.jstor.org/sici?sici=0013-5984(195303)53%3A7%3C410%3AANRFFP%3E2.0.CO%3B2-D
accessdate = 2008-01-10
doi = 10.1086/458513

* Clarence R. Stone. " [http://links.jstor.org/sici?sici=0013-5984(195610)57%3A1%3C36%3AMDOPRM%3E2.0.CO%3B2-6 Measuring Difficulty of Primary Reading Material: A Constructive Criticism of Spache's Measure] ." "The Elementary School Journal", Vol. 57, No. 1 (Oct., 1956), pp. 36-41

External links

* [http://www.interventioncentral.org/htmdocs/tools/okapi/okapimanual/spachelist.php Spache Revised word list]


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