Estimation of Reliability Coefficients Using the Test Information Function and Its Modifications.

Samejima, Fumiko

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Peer reviewed

ERIC Number: EJ509297

Record Type: Journal

Publication Date: 1994

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ISSN: ISSN-0146-6216

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Estimation of Reliability Coefficients Using the Test Information Function and Its Modifications.

Samejima, Fumiko

Applied Psychological Measurement, v18 n3 p229-44 Sep 1994

The reliability coefficient is predicted from the test information function (TIF) or two modified TIF formulas and a specific trait distribution. Examples illustrate the variability of the reliability coefficient across different trait distributions, and results are compared with empirical reliability coefficients. (SLD)

Descriptors: Adaptive Testing, Error of Measurement, Estimation (Mathematics), Reliability, Statistical Distributions, Test Theory

Publication Type: Reports - Evaluative; Journal Articles

Education Level: N/A

Audience: N/A

Language: English

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