A Relation Between a Between-Item Multidimensional IRT Model and the Mixture Rasch Model

Autor/inn/en	Rijmen, Frank; De Boeck, Paul
Titel	A Relation Between a Between-Item Multidimensional IRT Model and the Mixture Rasch Model
Quelle	In: Psychometrika, 70 (2005) 3, S.481-496 (16 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0033-3123
Schlagwörter	Simulation; Item Response Theory; Comparative Analysis; Models; Aggression; Verbal Communication + Suchen Sie Ihr Suchwort? Simulation program; Simulationsprogramm; Item-Response-Theorie; Analogiemodell
Abstract	Two generalizations of the Rasch model are compared: the between-item multidimensional model (Adams, Wilson, and Wang, 1997), and the mixture Rasch model (Mislevy & Verhelst, 1990; Rost, 1990). It is shown that the between-item multidimensional model is formally equivalent with a continuous mixture of Rasch models for which, within each class of the mixture, the item parameters are equal to the item parameters of the multidimensional model up to a shift parameter that is specific for the dimension an item belongs to in the multidimensional model. In a simulation study, the relation between both types of models also holds when the number of classes of the mixture is as small as two. The relation is illustrated with a study on verbal aggression. (Author).
Anmerkungen	Springer, 233 Spring Streeet, New York, NY 10013. Tel: 212-460-1539; Fax: 212-460-1594.
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10