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ERIC Number: EJ174776
Record Type: Journal
Publication Date: 1977
Pages: N/A
Abstractor: N/A
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The Urry Method of Approximating The Item Parameters of Latent Trait Theory
Schmidt, Frank L.
Educational and Psychological Measurement, 37, 3, 613-20, Aut 77
Urry's procedure for approximating latent trait test models is shown to tend to underestimate item discriminatory power and overestimate item difficulty. A method for correcting these biases is provided, and implications of the procedures are discussed. (Author/JKS)
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