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Journal of Speech and Hearing Research Vol.20 72-80 March 1977.
© American Speech-Language-Hearing Association
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An Extension of a Familiar Index of Observer Agreement

Martin A. Young
Illinois State University, Normal

A popular index of observer agreement is a/ (a + d) in which a and d represent the number of agreements and disagreements. This article provides a rationale for the extension of the index to the multiple-observer case, a comparison with another frequently used index, a description of situations for which the index is appropriate, and an analysis of factors related to interpreting the magnitude of the index.






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Copyright © 1977 by the American Speech-Language-Hearing Association.