MMSRM: Stata module to estimate Multidimensional Marginally Sufficient Rasch Model (MMSRM)

Statistical Software Components from Boston College Department of Economics

Abstract: mmsrm estimates by marginal maximum likelihood (MML) or generalized estimating equations (GEE) the parameters of the Multidimensional Marginally Sufficient Rasch Model (MMSRM). This Item Response Model (IRM) accepts one or several latent traits and is a particular multidimensionnal extension of the Rasch model. In this model, the items are separated in Q groups and each group of items is linked to one and only one latent trait. Each group fits a Rasch model relatively to the corresponding latent trait, so the score computed in each group of item is a sufficient statistics of this latent trait (to a specific value of this score is associated only one value for the latent trait). The program allows computing the parameter of a MMSRM with less than 4 latent traits. To improve the time of computing, the difficulty parameters are estimated in each unidimensional Rasch model and used as an offset variable to estimate the parameters of the distribution of the multidimensional latent trait. This model allows estimating the correlations between different latent traits measured by Rasch models.

Language: Stata
Requires: Stata version 8.0
Keywords: Rasch model; MMSRM; IRT; Multidimensional model; MML; GEE (search for similar items in EconPapers)
Date: 2005-07-04
Note: This module may be installed from within Stata by typing "ssc install mmsrm". Windows users should not attempt to download these files with a web browser.

Downloads: (external link)
http://fmwww.bc.edu/repec/bocode/m/mmsrm.ado program code (text/plain)
http://fmwww.bc.edu/repec/bocode/m/mmsrm.hlp help file (text/plain)

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