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- Title
PSYCHOMETRICS VERSUS DATAMETRICS: COMMENT ON VACHA-HAASE'S `RELIABILITY GENERALIZATION' METHOD AND SOME EPM EDITORIAL POLICIES.
- Authors
Sawilowsky, Shlomo S.
- Abstract
The present article reviews issues regarding test reliability, which is psychometric terminology, and score reliability, which is score-centric terminology. These issues have arisen, in part, due to some EPM editorial policies and Vacha-Haase's "reliability generalization" proposal. The article includes (a) a brief historical review of reliability terminology, (b) discussion on the emergence of datametrics (loosely defined as the application of psychometry to scores as opposed to an instrument) including a review of textbook authors' uses of psychometric versus datametric terminology, (c) discussion of problems with datametrics, and (d) a critique of Vacha-Haase's proposed meta-analytic reliability generalization via dummy-coded regression. The article concludes with a brief summary that presents several suggestions.
- Subjects
META-analysis; PSYCHOMETRICS
- Publication
Educational & Psychological Measurement, 2000, Vol 60, Issue 2, p157
- ISSN
0013-1644
- Publication type
Article
- DOI
10.1177/00131640021970439