The Influence of Test and Sample Dimensionality on Latent Trait Person Ability and Item Difficulty Calibrations.

Henning, Grant

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Peer reviewed

ERIC Number: EJ382359

Record Type: Journal

Publication Date: 1988

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The Influence of Test and Sample Dimensionality on Latent Trait Person Ability and Item Difficulty Calibrations.

Henning, Grant

Language Testing, v5 n1 p83-99 Jun 1988

Violations of item unidimensionality on language tests produced distorted estimates of person ability, and violations of person unidimensionality produced distorted estimates of item difficulty. The Bejar Method was sensitive to such distortions. (Author)

Descriptors: Construct Validity, Content Validity, Difficulty Level, Item Analysis, Language Tests, Latent Trait Theory, Psychometrics, Test Items, Test Theory

Publication Type: Journal Articles; Reports - Research

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Audience: N/A

Language: English

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