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Article: Summarizing item difficulty variation with parcel scores

TitleSummarizing item difficulty variation with parcel scores
Authors
Issue Date2008
Citation
Journal of Educational Measurement, 2008, v. 45, n. 4, p. 363-389 How to Cite?
AbstractA new method for analyzing differential item functioning is proposed to investigate the relative strengths and weaknesses of multiple groups of examinees. Accordingly, the notion of a conditional measure of difference between two groups (Reference and Focal) is generalized to a conditional variance. The objective of this article is to present and illustrate a strategy for aggregating results across sets of similar items that exhibit item difficulty variation. Logically, this aggregation strategy is related to the idea of DIF amplification, but estimation is ultimately carried out in the framework of a confirmatory multidimensional Rasch model. Grade 4 data from the 2000 National Assessment of Educational Progress are used to illustrate the technique. © 2008 by the National Council on Measurement in Education.
Persistent Identifierhttp://hdl.handle.net/10722/228066
ISSN
2015 Impact Factor: 1.528
2015 SCImago Journal Rankings: 2.067

 

DC FieldValueLanguage
dc.contributor.authorCamilli, Gregory-
dc.contributor.authorProwker, Adam-
dc.contributor.authorDossey, John A.-
dc.contributor.authorLindquist, Mary M.-
dc.contributor.authorChiu, Ting W.-
dc.contributor.authorVargas, Sadako-
dc.contributor.authorDe La Torre, Jimmy-
dc.date.accessioned2016-08-01T06:45:06Z-
dc.date.available2016-08-01T06:45:06Z-
dc.date.issued2008-
dc.identifier.citationJournal of Educational Measurement, 2008, v. 45, n. 4, p. 363-389-
dc.identifier.issn0022-0655-
dc.identifier.urihttp://hdl.handle.net/10722/228066-
dc.description.abstractA new method for analyzing differential item functioning is proposed to investigate the relative strengths and weaknesses of multiple groups of examinees. Accordingly, the notion of a conditional measure of difference between two groups (Reference and Focal) is generalized to a conditional variance. The objective of this article is to present and illustrate a strategy for aggregating results across sets of similar items that exhibit item difficulty variation. Logically, this aggregation strategy is related to the idea of DIF amplification, but estimation is ultimately carried out in the framework of a confirmatory multidimensional Rasch model. Grade 4 data from the 2000 National Assessment of Educational Progress are used to illustrate the technique. © 2008 by the National Council on Measurement in Education.-
dc.languageeng-
dc.relation.ispartofJournal of Educational Measurement-
dc.titleSummarizing item difficulty variation with parcel scores-
dc.typeArticle-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.doi10.1111/j.1745-3984.2008.00070.x-
dc.identifier.scopuseid_2-s2.0-57049115513-
dc.identifier.volume45-
dc.identifier.issue4-
dc.identifier.spage363-
dc.identifier.epage389-
dc.identifier.eissn1745-3984-

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