The Effect of Test Length and IRT Model on the Distribution and Stability of Three Appropriateness Indexes.

Noonan, Brian W.; And Others

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Peer reviewed

ERIC Number: EJ464866

Record Type: Journal

Publication Date: 1992

Pages: N/A

Abstractor: N/A

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ISSN: ISSN-0146-6216

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The Effect of Test Length and IRT Model on the Distribution and Stability of Three Appropriateness Indexes.

Noonan, Brian W.; And Others

Applied Psychological Measurement, v16 n4 p345-52 Dec 1992

Studied the extent to which three appropriateness indexes, Z(sub 3), ECIZ4, and W, are well standardized in a Monte Carlo study. The ECIZ4 most closely approximated a normal distribution, and its skewness and kurtosis were more stable and less affected by test length and item response theory model than the others. (SLD)

Descriptors: Comparative Analysis, Item Response Theory, Mathematical Models, Maximum Likelihood Statistics, Monte Carlo Methods, Statistical Distributions, Test Length

Publication Type: Reports - Evaluative; Journal Articles

Education Level: N/A

Audience: N/A

Language: English

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Authoring Institution: N/A

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Author Affiliations: N/A