ERIC Number: EJ690040
Record Type: Journal
Publication Date: 2004-Dec
Pages: 12
Abstractor: Author
ISBN: N/A
ISSN: ISSN-0013-1644
EISSN: N/A
Available Date: N/A
Utility of the Mantel-Haenszel Procedure for Detecting Differential Item Functioning in Small Samples
Fidalgo, Angel M.; Ferreres, Doris; Muniz, Jose
Educational and Psychological Measurement, v64 n6 p925-936 Dec 2004
Sample-size restrictions limit the contingency table approaches based on asymptotic distributions, such as the Mantel-Haenszel (MH) procedure, for detecting differential item functioning (DIF) in many practical applications. Within this framework, the present study investigated the power and Type I error performance of empirical and inferential criteria for DIF detection in small samples. Sample sizes (50/50, 100/50, 200/50, and 100/100 for the reference and focal groups, respectively), ability distributions (equal and unequal), and amount of DIF (moderate and high) were manipulated. The results show the advantages of employing theMHchi-square statistic using high levels of significance ([alpha] = .20) as opposed to the empirical criteria (cutoffs for categorizing DIF based on the magnitude of the MH common odds ratio estimator and the standardized p-difference statistic). Some considerations concerning Type I and Type II errors are made.
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A
Author Affiliations: N/A