Which Model is Best? Robustness Properties to Justify Model Choice among Unidimensional IRT Models under Item Parameter Drift

Autor/inn/en	Rupp, Andre A.; Zumbo, Bruno D.
Titel	Which Model is Best? Robustness Properties to Justify Model Choice among Unidimensional IRT Models under Item Parameter Drift
Quelle	In: Alberta Journal of Educational Research, 49 (2003) 3, S.264-276 (13 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0002-4805
Schlagwörter	Item Response Theory; Models; Robustness (Statistics); Measurement; Social Sciences + Suchen Sie Ihr Suchwort? Item-Response-Theorie; Analogiemodell; Widerstandsfähigkeit; Messverfahren; Social science; Sozialwissenschaften; Gesellschaftswissenschaften
Abstract	This article extends recent research on item parameter drift by investigating the robustness properties of basic unidimensional IRT models. Specifically, the article explores whether it is possible to advocate the consistent choice of one model over another based on its robustness properties under drift. On the one hand, it is shown that the biases that are introduced due to drift are minor for most practically relevant circumstances across all models. On the other hand, it is shown that the mathematical structure of the biases is theoretically complex so that globally superior performance of one model over another is observed only under restrictive side conditions. (Author).
Anmerkungen	University of Alberta, Faculty of Education. 845 Education Centre South, Faculty of Education, University of Alberta, Edmonton, AB T6G 2G5, Canada. Tel: 780-492-7941; Fax: 780-492-0236; Web site: http://www.education.ualberta.ca/educ/journals/ajer.html
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10