The estimation of kappa from percentage agreement interobserver reliability

Patrick S.C. Lee, Hoi K. Suen

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


Studies in applied behavior analysis have used percentage agreement as an index of interobserver reliability. Because percentage agreement is inflated by chance agreements, kappa has been recommended as a preferred alternative. In this article, we present a procedure to estimate maximum and minimum kappa from percentage agreement with limited information. The procedure will facilitate comparisons between studies and the reassessment of the reliabilities of previous studies.

Original languageEnglish (US)
Pages (from-to)375-378
Number of pages4
JournalBehavioral Assessment
Issue number4
StatePublished - Sep 1984

All Science Journal Classification (ASJC) codes

  • Psychiatry and Mental health


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