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Autor/inn/enSteedle, Jeffrey T.; Morrison, Kristin M.
TitelEmbedded Field Test Item Statistics: Can They Be Trusted for Estimating Student Proficiency?
QuelleIn: Educational Assessment, 24 (2019) 1, S.1-12 (12 Seiten)Infoseite zur Zeitschrift
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Spracheenglisch
Dokumenttypgedruckt; online; Zeitschriftenaufsatz
ISSN1062-7197
DOI10.1080/10627197.2018.1543543
SchlagwörterField Tests; Test Items; Statistics; Difficulty Level; Computation; Test Format; Achievement Tests; Accuracy; Mathematics Tests; Reading Tests; Science Tests; Language Tests; Social Studies; Elementary Secondary Education
AbstractAssessment items are commonly field tested prior to operational use to observe statistical item properties such as difficulty. Item parameter estimates from field testing may be used to assign scores via pre-equating or computer adaptive designs. This study examined differences between item difficulty estimates based on field test and operational data and the relationship of such differences to item position changes and student proficiency estimates. Item position effects were observed for 20 assessments, with items in later positions tending to be more difficult. Moreover, field test estimates of item difficulty were biased slightly upward, which may indicate examinee knowledge of which items were being field tested. Nevertheless, errors in field test item difficulty estimates had negligible impacts on student proficiency estimates for most assessments. Caution is still warranted when using field test statistics for scoring, and testing programs should conduct investigations to determine whether the effects on scoring are inconsequential. (As Provided).
AnmerkungenRoutledge. Available from: Taylor & Francis, Ltd. 530 Walnut Street Suite 850, Philadelphia, PA 19106. Tel: 800-354-1420; Tel: 215-625-8900; Fax: 215-207-0050; Web site: http://www.tandf.co.uk/journals
Erfasst vonERIC (Education Resources Information Center), Washington, DC
Update2020/1/01
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