An Extension of a Familiar Index of Observer Agreement 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 ... Research Article
Research Article  |   March 01, 1977
An Extension of a Familiar Index of Observer Agreement
 
Author Affiliations & Notes
  • Martin A. Young
    Illinois State University, Normal
Article Information
Research Articles
Research Article   |   March 01, 1977
An Extension of a Familiar Index of Observer Agreement
Journal of Speech, Language, and Hearing Research, March 1977, Vol. 20, 72-80. doi:10.1044/jshr.2001.72
History: Received November 7, 1975 , Accepted June 22, 1976
 
Journal of Speech, Language, and Hearing Research, March 1977, Vol. 20, 72-80. doi:10.1044/jshr.2001.72
History: Received November 7, 1975; Accepted June 22, 1976

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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