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Peer reviewedAnderson, Jonathan – Journal of Reading, 1983
Indicates that the Rix modification of the Lix Readability Formula is easy to calculate, correlates highly with other popular formulas, and is useful for materials for grades 3 through 12. (AEA)
Descriptors: Elementary Secondary Education, Readability Formulas, Test Reliability, Test Validity
Olson, Arthur V. – 1980
Noting that four of the six most common readability formulas use the McCall-Crabbs Standard Test Lessons in Reading as the independent criterion of difficulty to establish validity, while the other two often site their correlation with the first four to determine validity, a study examined whether these lessons consisted of passage selections…
Descriptors: Elementary Secondary Education, Evaluation Criteria, Librarians, Readability Formulas
