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ERIC Number: EJ951512
Record Type: Journal
Publication Date: 2012-Jan
Pages: 7
Abstractor: As Provided
Reference Count: 13
ISBN: N/A
ISSN: ISSN-0033-3123
On the Relationships between Jeffreys Modal and Weighted Likelihood Estimation of Ability under Logistic IRT Models
Magis, David; Raiche, Gilles
Psychometrika, v77 n1 p163-169 Jan 2012
This paper focuses on two estimators of ability with logistic item response theory models: the Bayesian modal (BM) estimator and the weighted likelihood (WL) estimator. For the BM estimator, Jeffreys' prior distribution is considered, and the corresponding estimator is referred to as the Jeffreys modal (JM) estimator. It is established that under the three-parameter logistic model, the JM estimator returns larger estimates than the WL estimator. Several implications of this result are outlined.
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Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A