Evaluating the Robustness of Graded Response Model and Classical Test Theory Parameter Estimates to Deviant Items.

Sinar, Evan F.; Zickar, Michael J.

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Peer reviewed

ERIC Number: EJ653064

Record Type: Journal

Publication Date: 2002

Pages: N/A

Abstractor: N/A

ISBN: N/A

ISSN: ISSN-0146-6216

EISSN: N/A

Evaluating the Robustness of Graded Response Model and Classical Test Theory Parameter Estimates to Deviant Items.

Sinar, Evan F.; Zickar, Michael J.

Applied Psychological Measurement, v26 n2 p181-91 Jun 2002

Examined the influence of deviant scale items on item parameter estimates of focal scale items and person parameter estimates through a comparison of item response theory (IRT) and classical test theory (CTT) models. Used Monte Carlo methods to explore results from a pilot investigation of job attitude data. Discusses implications for researchers using IRT and CCT methods in scale development. (SLD)

Descriptors: Attitudes, Estimation (Mathematics), Monte Carlo Methods, Robustness (Statistics), Test Construction, Test Items, Test Theory

Publication Type: Journal Articles; Reports - Research

Education Level: N/A

Audience: N/A

Language: English

Sponsor: N/A

Authoring Institution: N/A

Grant or Contract Numbers: N/A

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