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Estimation (Mathematics)	2
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Maximum Likelihood Statistics	2
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Applied Psychological…

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Baker, Frank B.	2
Harwell, Michael R.	1

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The Item Log-Likelihood Surface for Two- and Three-Parameter Item Characteristic Curve Models.

Peer reviewed

Baker, Frank B. – Applied Psychological Measurement, 1988

The form of item log-likelihood surface was investigated under two-parameter and three-parameter logistic models. Results confirm that the LOGIST program procedures used to locate the maximum of the likelihood functions are consistent with the form of the item log-likelihood surface. (SLD)

Descriptors: Estimation (Mathematics), Factor Analysis, Graphs, Latent Trait Theory

The Use of Prior Distributions in Marginalized Bayesian Item Parameter Estimation: A Didactic.

Peer reviewed

Harwell, Michael R.; Baker, Frank B. – Applied Psychological Measurement, 1991

Previous work on the mathematical and implementation details of the marginalized maximum likelihood estimation procedure is extended to encompass the marginalized Bayesian procedure for estimating item parameters of R. J. Mislevy (1986) and to communicate this procedure to users of the BILOG computer program. (SLD)

Descriptors: Bayesian Statistics, Equations (Mathematics), Estimation (Mathematics), Item Response Theory