Percentage agreement and phi: A conversion table |
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| Authors: | Lewin L M Wakefield J A |
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| Affiliation: | California State College, Stanislaus. |
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| Abstract: | STUDIES IN APPLIED BEHAVIOR ANALYSIS HAVE USED TWO EXPRESSIONS OF RELIABILITY FOR HUMAN OBSERVATIONS: percentage agreement (including percentage occurrence and percentage nonoccurrence agreement) and correlational techniques (including the phi coefficient). The formal relationship between these two expressions is demonstrated, and a table for converting percentage agreement to phi, or vice-versa, is presented. It is suggested that both expressions be reported in order to communicate reliability unambiguously and to facilitate comparison of the reliabilities from different studies. |
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| Keywords: | reliability observer agreement phi percentage agreement methodology |
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