Literaturnachweis - Detailanzeige
| Autor/inn/en | Yu, Lei; Moses, Tim; Puhan, Gautam; Dorans, Neil |
|---|---|
| Titel | DIF Detection with Small Samples: Applying Smoothing Techniques to Frequency Distributions in the Mantel-Haenszel Procedure. Research Report. ETS RR-08-44 |
| Quelle | In: ETS Research Report Series, (2008), (40 Seiten)Infoseite zur Zeitschrift
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| Sprache | englisch |
| Dokumenttyp | gedruckt; online; Zeitschriftenaufsatz |
| ISSN | 2330-8516 |
| Schlagwörter | Test Bias; Item Response Theory; Sample Size; Evaluation Criteria; Error Patterns; Comparative Analysis; Statistical Analysis; College Entrance Examinations; White Students; Sampling; Asian Americans |
| Abstract | All differential item functioning (DIF) methods require at least a moderate sample size for effective DIF detection. Samples that are less than 200 pose a challenge for DIF analysis. Smoothing can improve upon the estimation of the population distribution by preserving major features of an observed frequency distribution while eliminating the noise brought about by irregular data points. This study applied smoothing techniques to frequency distributions and investigated the impact of smoothed data on the Mantel-Haenszel (MH) DIF detection in small samples. Eight sample-size combinations were randomly drawn from a real data set to make the study realistic and were replicated 80 times to produce stable results. The population DIF results were used as the criteria to evaluate sample estimates using root-mean square difference (RMSD), bias analysis, and Type II error rate. Loglinear smoothing was found to provide slight to moderate improvements in MH DIF estimation with small samples. (As Provided). |
| Anmerkungen | Educational Testing Service. Rosedale Road, MS19-R Princeton, NJ 08541. Tel: 609-921-9000; Fax: 609-734-5410; e-mail: RDweb@ets.org; Web site: https://www.ets.org/research/policy_research_reports/ets |
| Erfasst von | ERIC (Education Resources Information Center), Washington, DC |
| Update | 2020/1/01 |
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