A Statistical Test for Differential Item Pair Functioning.
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| Title: | A Statistical Test for Differential Item Pair Functioning. |
|---|---|
| Authors: | Bechger, Timo1 timo.bechger@cito.nl, Maris, Gunter |
| Source: | Psychometrika. Jun2015, Vol. 80 Issue 2, p317-340. 24p. |
| Subject Terms: | *Item response theory, *Educational tests & measurements, *Psychological tests, Rasch models, Psychometrics |
| Abstract: | This paper presents an IRT-based statistical test for differential item functioning (DIF). The test is developed for items conforming to the Rasch (Probabilistic models for some intelligence and attainment tests, The Danish Institute of Educational Research, Copenhagen, ) model but we will outline its extension to more complex IRT models. Its difference from the existing procedures is that DIF is defined in terms of the relative difficulties of pairs of items and not in terms of the difficulties of individual items. The argument is that the difficulty of an item is not identified from the observations, whereas the relative difficulties are. This leads to a test that is closely related to Lord's (Applications of item response theory to practical testing problems, Erlbaum, Hillsdale, ) test for item DIF albeit with a different and more correct interpretation. Illustrations with real and simulated data are provided. [ABSTRACT FROM AUTHOR] |
| Copyright of Psychometrika is the property of Cambridge University Press and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Education Research Complete |
| FullText | Text: Availability: 0 |
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| Header | DbId: ehh DbLabel: Education Research Complete An: 103105064 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: A Statistical Test for Differential Item Pair Functioning. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Bechger%2C+Timo%22">Bechger, Timo</searchLink><relatesTo>1</relatesTo><i> timo.bechger@cito.nl</i><br /><searchLink fieldCode="AR" term="%22Maris%2C+Gunter%22">Maris, Gunter</searchLink> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Psychometrika%22">Psychometrika</searchLink>. Jun2015, Vol. 80 Issue 2, p317-340. 24p. – Name: Subject Label: Subject Terms Group: Su Data: *<searchLink fieldCode="DE" term="%22Item+response+theory%22">Item response theory</searchLink><br />*<searchLink fieldCode="DE" term="%22Educational+tests+%26+measurements%22">Educational tests & measurements</searchLink><br />*<searchLink fieldCode="DE" term="%22Psychological+tests%22">Psychological tests</searchLink><br /><searchLink fieldCode="DE" term="%22Rasch+models%22">Rasch models</searchLink><br /><searchLink fieldCode="DE" term="%22Psychometrics%22">Psychometrics</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: This paper presents an IRT-based statistical test for differential item functioning (DIF). The test is developed for items conforming to the Rasch (Probabilistic models for some intelligence and attainment tests, The Danish Institute of Educational Research, Copenhagen, ) model but we will outline its extension to more complex IRT models. Its difference from the existing procedures is that DIF is defined in terms of the relative difficulties of pairs of items and not in terms of the difficulties of individual items. The argument is that the difficulty of an item is not identified from the observations, whereas the relative difficulties are. This leads to a test that is closely related to Lord's (Applications of item response theory to practical testing problems, Erlbaum, Hillsdale, ) test for item DIF albeit with a different and more correct interpretation. Illustrations with real and simulated data are provided. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Psychometrika is the property of Cambridge University Press and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1007/s11336-014-9408-y Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 24 StartPage: 317 Subjects: – SubjectFull: Item response theory Type: general – SubjectFull: Educational tests & measurements Type: general – SubjectFull: Psychological tests Type: general – SubjectFull: Rasch models Type: general – SubjectFull: Psychometrics Type: general Titles: – TitleFull: A Statistical Test for Differential Item Pair Functioning. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Bechger, Timo – PersonEntity: Name: NameFull: Maris, Gunter IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 06 Text: Jun2015 Type: published Y: 2015 Identifiers: – Type: issn-print Value: 00333123 Numbering: – Type: volume Value: 80 – Type: issue Value: 2 Titles: – TitleFull: Psychometrika Type: main |
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