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ArtikelThe File Drawer Problem in Reliability Generalization: A Strategy to Compute a Fail-Safe N With Reliability Coefficients  
Oleh: Howell, Ryan T. ; Shields, Alan L.
Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Educational and Psychological Measurement vol. 68 no. 01 (Feb. 2008), page 120-128.
Topik: reliability; reliability generalization; Fail-Safe N; meta-analysis
Fulltext: 120.pdf (111.16KB)
Isi artikelMeta-analytic reliability generalizations (RGs) are limited by the scarcity of reliability reporting in primary articles, and currently, RG investigators lack a method to quantify the impact of such nonreporting. This article introduces a stepwise procedure to address this challenge. First, the authors introduce a formula that allows researchers to estimate the lower bound population average reliability for a desired instrument. Second, they present an equation to determine the Fail-Safe N for RG. This equation estimates the number of ‘‘file drawer’’ studies required to drop the aggregate score reliability of an instrument below a specified criterion value. Finally, the authors demonstrate the utility of these equations using published RG studies. Comments on the conclusions drawn from each RG application are provided.
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