Statistical Bias in Maximum Likelihood Estimators of Item Parameters.

Lord, Frederic M.

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Peer reviewed

ERIC Number: EJ298919

Record Type: CIJE

Publication Date: 1983

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Statistical Bias in Maximum Likelihood Estimators of Item Parameters.

Lord, Frederic M.

Psychometrika, v48 n3 p425-35 Sep 1983

Asymptotic formulas are derived for the bias in the maximum likelihood estimators of the item parameters in the logistic item response model when examinee abilities are known. Numerical results are given for a typical verbal test for college admission. (Author)

Descriptors: College Entrance Examinations, Estimation (Mathematics), Item Analysis, Latent Trait Theory, Maximum Likelihood Statistics, Measurement, Statistical Bias, Test Theory

Publication Type: Reports - Research; Journal Articles

Education Level: N/A

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Language: English

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Note: This work was supported in part by contract N00014-80-C-0402, project designation NR 150-453 between the Office of Naval Research and Educational Testing Service.