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ERIC Number: EJ1111537
Record Type: Journal
Publication Date: 2007-May
Pages: 21
Abstractor: As Provided
ISSN: EISSN-2330-8516
The Information a Test Provides on an Ability Parameter. Research Report. ETS RR-07-18
Haberman, Shelby J.
ETS Research Report Series, May 2007
In item-response theory, if a latent-structure model has an ability variable, then elementary information theory may be employed to provide a criterion for evaluation of the information the test provides concerning ability. This criterion may be considered even in cases in which the latent-structure model is not valid, although interpretation of the criterion is more complex in this case. It is also possible to consider reliability results for inferences about the ability variable. Use of sampling to develop required parameter estimates is straightforward. Applications of the criterion in zero-, one-, and two-parameter logistic (0PL, 1PL, and 2PL) examples are provided.
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Assessments and Surveys: Praxis Series
Grant or Contract Numbers: N/A