Identification of Differential Item Functioning in Multiple-Group Settings: A Multivariate Outlier Detection Approach
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| Title: | Identification of Differential Item Functioning in Multiple-Group Settings: A Multivariate Outlier Detection Approach |
|---|---|
| Language: | English |
| Authors: | Magis, David, De Boeck, Paul |
| Source: | Multivariate Behavioral Research. 2011 46(5):733-755. |
| Availability: | Psychology Press. Available from: Taylor & Francis, Ltd. 325 Chestnut Street Suite 800, Philadelphia, PA 19106. Tel: 800-354-1420; Fax: 215-625-2940; Web site: http://www.tandf.co.uk/journals |
| Peer Reviewed: | Y |
| Physical Description: | |
| Page Count: | 23 |
| Publication Date: | 2011 |
| Document Type: | Journal Articles Reports - Research |
| Education Level: | Higher Education |
| Descriptors: | Test Bias, Mathematics Tests, Identification, Sampling, Evaluation Methods, Assistive Technology, Calculators, Multivariate Analysis, College Students, College Mathematics |
| DOI: | 10.1080/00273171.2011.606757 |
| ISSN: | 0027-3171 |
| Abstract: | We focus on the identification of differential item functioning (DIF) when more than two groups of examinees are considered. We propose to consider items as elements of a multivariate space, where DIF items are outlying elements. Following this approach, the situation of multiple groups is a quite natural case. A robust statistics technique is proposed to identify DIF items as outliers in the multivariate space. For low dimensionalities, up to 2-3 groups, a simple graphical tool is derived. We illustrate our approach with a reanalysis of data from Kim, Cohen, and Park (1995) on using calculators for a mathematics test. (Contains 2 tables and 4 figures.) |
| Abstractor: | As Provided |
| Number of References: | 38 |
| Entry Date: | 2011 |
| Accession Number: | EJ948266 |
| Database: | ERIC |
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