Use of Item Models in a Large-Scale Admissions Test: A Case Study

Autor/inn/en	Sinharay, Sandip; Johnson, Matthew S.
Titel	Use of Item Models in a Large-Scale Admissions Test: A Case Study
Quelle	In: International Journal of Testing, 8 (2008) 3, S.209-236 (28 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1530-5058
Schlagwörter	College Entrance Examinations; Case Studies; Test Items; Models; Automation; Measurement; Scoring; Graduate Record Examinations + Suchen Sie Ihr Suchwort? Aufnahmeprüfung; Case study; Fallstudie; Case Study; Test content; Testaufgabe; Analogiemodell; Messverfahren; Bewertung
Abstract	"Item models" (LaDuca, Staples, Templeton, & Holzman, 1986) are classes from which it is possible to generate items that are equivalent/isomorphic to other items from the same model (e.g., Bejar, 1996, 2002). They have the potential to produce large numbers of high-quality items at reduced cost. This article introduces data from an application of item models for the generation of items for a large-scale assessment and investigates several research questions associated with the data. We begin by reviewing calibration techniques for the analysis of data involving item models; one method assumes that the items are isomorphic, while the other treats items generated from the same item model as distinct but related. A major question for these types of data is whether these items are isomorphic; that is, if they behave the same psychometrically. This article describes a number of rough diagnostic measures and a statistical diagnostic to assess the extent of isomorphicity in the items generated from an item model. Finally, this article discusses the issue of scoring--an area that needs more research--with data involving item models. (Contains 4 tables and 9 figures.) (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10