Differential Item Functioning for Accommodated Students with Disabilities: Effect of Differences in Proficiency Distributions.

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Title: Differential Item Functioning for Accommodated Students with Disabilities: Effect of Differences in Proficiency Distributions.
Authors: Quesen, Sarah, Lane, Suzanne
Source: Applied Measurement in Education. Oct-Dec2019, Vol. 32 Issue 4, p337-349. 13p.
Subjects: Students with disabilities, Competency-based teacher education, Grading of students, Logistic regression analysis, Generalization
Abstract: This study examined the effect of similar vs. dissimilar proficiency distributions on uniform DIF detection on a statewide eighth grade mathematics assessment. Results from the similar- and dissimilar-ability reference groups with an SWD focal group were compared for four models: logistic regression, hierarchical generalized linear model (HGLM), the Wald-1 IRT-based test, and the Mantel-Haenszel procedure. A DIF-free-then-DIF strategy was used. The rate of DIF detection was examined among all accommodated scores and common accommodation subcategories. No items were detected for DIF using the similar ability distribution reference group, regardless of method. With the dissimilar ability reference group, logistic regression and Mantel–Haenszel flagged 8–17%, and the Wald-1 and HGLM test flagged 23–38% of items for DIF. Forming focal groups by accommodation type did not alter the pattern of DIF detection. Creating a reference group to be similar in ability to the focal group may control the rate of erroneous DIF detection for SWD. [ABSTRACT FROM AUTHOR]
Copyright of Applied Measurement in Education is the property of Taylor & Francis Ltd 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.)
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  Data: Differential Item Functioning for Accommodated Students with Disabilities: Effect of Differences in Proficiency Distributions.
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  Data: <searchLink fieldCode="JN" term="%22Applied+Measurement+in+Education%22">Applied Measurement in Education</searchLink>. Oct-Dec2019, Vol. 32 Issue 4, p337-349. 13p.
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  Data: <searchLink fieldCode="DE" term="%22Students+with+disabilities%22">Students with disabilities</searchLink><br /><searchLink fieldCode="DE" term="%22Competency-based+teacher+education%22">Competency-based teacher education</searchLink><br /><searchLink fieldCode="DE" term="%22Grading+of+students%22">Grading of students</searchLink><br /><searchLink fieldCode="DE" term="%22Logistic+regression+analysis%22">Logistic regression analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Generalization%22">Generalization</searchLink>
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  Data: This study examined the effect of similar vs. dissimilar proficiency distributions on uniform DIF detection on a statewide eighth grade mathematics assessment. Results from the similar- and dissimilar-ability reference groups with an SWD focal group were compared for four models: logistic regression, hierarchical generalized linear model (HGLM), the Wald-1 IRT-based test, and the Mantel-Haenszel procedure. A DIF-free-then-DIF strategy was used. The rate of DIF detection was examined among all accommodated scores and common accommodation subcategories. No items were detected for DIF using the similar ability distribution reference group, regardless of method. With the dissimilar ability reference group, logistic regression and Mantel–Haenszel flagged 8–17%, and the Wald-1 and HGLM test flagged 23–38% of items for DIF. Forming focal groups by accommodation type did not alter the pattern of DIF detection. Creating a reference group to be similar in ability to the focal group may control the rate of erroneous DIF detection for SWD. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Applied Measurement in Education is the property of Taylor & Francis Ltd 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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      – Type: doi
        Value: 10.1080/08957347.2019.1660347
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      – Code: eng
        Text: English
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        PageCount: 13
        StartPage: 337
    Subjects:
      – SubjectFull: Students with disabilities
        Type: general
      – SubjectFull: Competency-based teacher education
        Type: general
      – SubjectFull: Grading of students
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      – SubjectFull: Logistic regression analysis
        Type: general
      – SubjectFull: Generalization
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      – TitleFull: Differential Item Functioning for Accommodated Students with Disabilities: Effect of Differences in Proficiency Distributions.
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              Text: Oct-Dec2019
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              Y: 2019
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