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PERCENTAGE AGREEMENT AND PHI: A CONVERSION TABLE
Author(s) -
Lewin Lewis M.,
Wakefield James A.
Publication year - 1979
Publication title -
journal of applied behavior analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.1
H-Index - 76
eISSN - 1938-3703
pISSN - 0021-8855
DOI - 10.1901/jaba.1979.12-299
Subject(s) - table (database) , reliability (semiconductor) , psychology , agreement , statistics , mathematics , data mining , computer science , physics , thermodynamics , power (physics) , linguistics , philosophy
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.