Negative Information and the Three-Parameter Logistic Model. Teacher's Corner.

Bradlow, Eric T.

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Peer reviewed

ERIC Number: EJ531745

Record Type: Journal

Publication Date: 1996

Pages: N/A

Abstractor: N/A

ISBN: N/A

ISSN: ISSN-1076-9986

EISSN: N/A

Negative Information and the Three-Parameter Logistic Model. Teacher's Corner.

Bradlow, Eric T.

Journal of Educational and Behavioral Statistics, v21 n2 p179-85 Sum 1996

The three-parameter logistic (3-PL) model is described and a derivation of the 3-PL observed information function is presented for a single binary response from one examinee with known item parameters. Formulas are presented for the probability of negative information and for the expected information (always nonnegative). (SLD)

Descriptors: Ability, Adaptive Testing, Computer Assisted Testing, Item Response Theory, Sampling

Publication Type: Reports - Evaluative; Journal Articles

Education Level: N/A

Audience: N/A

Language: English

Sponsor: N/A

Authoring Institution: N/A

Grant or Contract Numbers: N/A