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ERIC Number: ED374153
Record Type: Non-Journal
Publication Date: 1994-Apr
Pages: 18
Abstractor: N/A
Reference Count: N/A
Performance of Mantel-Haenszel and Logistic Regression DIF Procedures over Replications Using Real Data.
Pang, Xiao L.; And Others
The function of Mantel-Haenszel (MH) and logistic regression (LR) statistics with real data in detecting gender-based differentially functioning items (DIF) was investigated when sample size and criterion variable varied. The data base consisted of the item responses of a population of 183,356 Caucasians to the Math test of the ACT Assessment (Form 39B) in 1989. Using four sample sizes (1000/1000, 500/500, 250/250, and 100/100) and two criterion scores (total test and subtest), 30 replications were carried out for each combination of sample size and criterion. The results indicated that the power of the two procedures was affected by sample size and the choice of criterion, when items with different magnitude of DIF were assessed. While displaying a high agreement in detection rate for each condition, the extent of DIF decreased for 10 out of 12 DIF items when subtest score was used as the criterion. (Contains 10 references and 2 tables.) (Author)
Publication Type: Reports - Evaluative; Speeches/Meeting Papers
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Assessments and Surveys: ACT Assessment