An Application of Item Response Time: The Effort-Moderated IRT Model

Autor/inn/en	Wise, Steven L.; DeMars, Christine E.
Titel	An Application of Item Response Time: The Effort-Moderated IRT Model
Quelle	In: Journal of Educational Measurement, 43 (2006) 1, S.19-38 (20 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0022-0655
DOI	10.1111/j.1745-3984.2006.00002.x
Schlagwörter	Guessing (Tests); Psychometrics; Inferences; Reaction Time; Item Response Theory; Scores; Models; Test Validity; Goodness of Fit; Achievement Tests; Computation; Simulation + Suchen Sie Ihr Suchwort? Erraten; Psychometry; Psychometrie; Inference; Inferenz; Reaktionsvermögen; Item-Response-Theorie; Analogiemodell; Testvalidität; Achievement test; Achievement; Testing; Test; Tests; Leistungsbeurteilung; Leistungsüberprüfung; Leistung; Testdurchführung; Testen; Simulation program; Simulationsprogramm
Abstract	The validity of inferences based on achievement test scores is dependent on the amount of effort that examinees put forth while taking the test. With low-stakes tests, for which this problem is particularly prevalent, there is a consequent need for psychometric models that can take into account differing levels of examinee effort. This article introduces the effort-moderated IRT model, which incorporates item response time into proficiency estimation and item parameter estimation. In two studies of the effort-moderated model when rapid guessing (i.e., reflecting low examinee effort) was present, one based on real data and the other on simulated data, the effort-moderated model performed better than the standard 3PL model. Specifically, it was found that the effort-moderated model (a) showed better model fit, (b) yielded more accurate item parameter estimates, (c) more accurately estimated test information, and (d) yielded proficiency estimates with higher convergent validity. (Contains 3 notes.) (Author).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10