Marginal Maximum Likelihood Estimation for a Psychometric Model of Discontinuous Development.

Mislevy, Robert J.; Wilson, Mark

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Peer reviewed

ERIC Number: EJ523954

Record Type: Journal

Publication Date: 1996

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ISSN: ISSN-0033-3123

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Marginal Maximum Likelihood Estimation for a Psychometric Model of Discontinuous Development.

Mislevy, Robert J.; Wilson, Mark

Psychometrika, v61 n1 p41-71 Mar 1996

Marginal maximum likelihood estimation equations are derived for the structural parameters of the Saltus model, and a computing approximation is suggested based on the EM algorithm. The solution is illustrated with simulated data and an example from the domain of mixed number subtraction. (SLD)

Descriptors: Bayesian Statistics, Cognitive Tests, Equations (Mathematics), Individual Development, Item Response Theory, Learning, Models, Psychometrics, Simulation

Publication Type: Reports - Evaluative; Journal Articles

Education Level: N/A

Audience: N/A

Language: English

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