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ERIC Number: EJ174773
Record Type: Journal
Publication Date: 1977
Pages: N/A
Abstractor: N/A
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Conditional Versus Unconditional Procedures for Sample-Free Item Analysis
Wright, Benjamin D.; Douglas, Graham A.
Educational and Psychological Measurement, 37, 3, 573-86, Aut 77
Two procedures for Rasch, sample-free item calibration are reviewed and compared for accuracy. The theoretically ideal "conditional" procedure is impractical for more than fifteen items. The more practical but biased "unconditional" procedure is discussed in detail. (Author/JKS)
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