IRT Item Parameter Scaling for Developing New Item Pools

Autor/inn/en	Kang, Hyeon-Ah; Lu, Ying; Chang, Hua-Hua
Titel	IRT Item Parameter Scaling for Developing New Item Pools
Quelle	In: Applied Measurement in Education, 30 (2017) 1, S.1-15 (15 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0895-7347
DOI	10.1080/08957347.2016.1243537
Schlagwörter	Item Response Theory; Accuracy; Educational Assessment; Test Items; Scaling; Comparative Analysis; Sample Size; Simulation; Evaluation Criteria; Statistical Analysis + Suchen Sie Ihr Suchwort? Item-Response-Theorie; Education; assessment; Bewertungssystem; Test content; Testaufgabe; Scale construction; Skalenkonstruktion; Simulation program; Simulationsprogramm; Statistische Analyse
Abstract	Increasing use of item pools in large-scale educational assessments calls for an appropriate scaling procedure to achieve a common metric among field-tested items. The present study examines scaling procedures for developing a new item pool under a spiraled block linking design. The three scaling procedures are considered: (a) concurrent calibration, (b) separate calibration with one linking, and (c) separate calibration with three sequential linking. Evaluation across varying sample sizes and item pool sizes suggests that calibrating an item pool simultaneously results in the most stable scaling. The separate calibration with linking procedures produced larger scaling errors as the number of linking steps increased. The Haebara's item characteristic curve linking resulted in better performances than the test characteristic curve (TCC) linking method. The present article provides an analytic illustration that the test characteristic curve method may fail to find global solutions in polytomous items. Finally, comparison of the single- and mixed-format item pools suggests that the use of polytomous items as the anchor can improve the overall scaling accuracy of the item pools. (As Provided).
Anmerkungen	Routledge. Available from: Taylor & Francis, Ltd. 325 Chestnut Street Suite 800, Philadelphia, PA 19106. Tel: 800-354-1420; Fax: 215-625-2940; Web site: http://www.tandf.co.uk/journals
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2020/1/01