Equating with Miditests Using IRT

Autor/inn/en	Fitzpatrick, Joseph; Skorupski, William P.
Titel	Equating with Miditests Using IRT
Quelle	In: Journal of Educational Measurement, 53 (2016) 2, S.172-189 (18 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0022-0655
DOI	10.1111/jedm.12109
Schlagwörter	Difficulty Level; Test Items; Comparative Analysis; Test Construction; Item Response Theory; Equated Scores; Simulation + Suchen Sie Ihr Suchwort? Schwierigkeitsgrad; Test content; Testaufgabe; Testaufbau; Item-Response-Theorie; Simulation program; Simulationsprogramm
Abstract	The equating performance of two internal anchor test structures--miditests and minitests--is studied for four IRT equating methods using simulated data. Originally proposed by Sinharay and Holland, miditests are anchors that have the same mean difficulty as the overall test but less variance in item difficulties. Four popular IRT equating methods were tested, and both the means and SDs of the true ability of the group to be equated were varied. We evaluate equating accuracy marginally and conditional on true ability. Our results suggest miditests perform about as well as traditional minitests for most conditions. Findings are discussed in terms of comparability to the typical minitest design and the trade-off between accuracy and flexibility in test construction. (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2020/1/01