Increasing Item Complexity: A Possible Cause of Scale Shrinkage for Unidimensional Item Response Theory.

Yen, Wendy M.

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Peer reviewed

ERIC Number: EJ328994

Record Type: Journal

Publication Date: 1985

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Increasing Item Complexity: A Possible Cause of Scale Shrinkage for Unidimensional Item Response Theory.

Yen, Wendy M.

Psychometrika, v50 n4 p399-410 Dec 1985

An approximate relationship is devised between the unidimensional model used in data analysis and a multidimensional model hypothesized to be generating the item responses. Scale shrinkage is successfully predicted for several sets of simulated data. (Author/LMO)

Descriptors: Difficulty Level, Hypothesis Testing, Item Analysis, Latent Trait Theory, Mathematical Models, Psychometrics, Scaling, Statistical Analysis

Publication Type: Journal Articles; Reports - Research

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Audience: N/A

Language: English

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