The Impact of Three Factors on the Recovery of Item Parameters for the Three-Parameter Logistic Model

Autor/inn/en	Kim, Kyung Yong; Lee, Won-Chan
Titel	The Impact of Three Factors on the Recovery of Item Parameters for the Three-Parameter Logistic Model
Quelle	In: Applied Measurement in Education, 30 (2017) 3, S.228-242 (15 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0895-7347
DOI	10.1080/08957347.2017.1316274
Schlagwörter	Test Items; Item Response Theory; Comparative Analysis; Methods; Computation; Mathematics Tests + Suchen Sie Ihr Suchwort? Test content; Testaufgabe; Item-Response-Theorie; Method; Methode
Abstract	This article provides a detailed description of three factors (specification of the ability distribution, numerical integration, and frame of reference for the item parameter estimates) that might affect the item parameter estimation of the three-parameter logistic model, and compares five item calibration methods, which are combinations of the three factors, using a simulation study. The five item calibration methods are Normal-Midpoint-Prior (NMPr), Normal-Hermite-Prior (NHPr), Normal-Midpoint-Posterior (NMPo), Normal-Hermite-Posterior (NHPo), and Empirical-Midpoint-Prior (EMPr). In addition, four item response theory computer programs (BILOG-MG, PARSCALE, flexMIRT, and ICL) are compared in terms of their default specifications and available options of the three factors. The EMPr method recovered item parameters accurately regardless of the shape of the population ability distribution and the number of quadrature points. The NMPr, NHPr, NMPo, and NHPo methods returned item parameter estimates with low bias when abilities followed a standard normal distribution, but tended to either underestimate or overestimate the item parameters when the population ability distribution was skewed. Also, unlike the EMPr method, the performance of these four methods depended on the number of quadrature points. (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2020/1/01