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ERIC Number: ED389742
Record Type: RIE
Publication Date: 1995-Aug
Reference Count: N/A
DIF Data on Free-Response SAT I Mathematical Items.
Lawrence, Ida M.; And Others
This research summarizes differential item functioning (DIF) results for student produced response (SPR) items, a nonmultiple-choice mathematical item type in the Scholastic Aptitude Test I (SAT I). DIF data from 4 field trial pretest administrations (620 SPR items) and 10 final forms (100 SPR items with samples ranging from about 58,000 to over 250,000) were examined. For the male/female comparison, the SPR item type exhibited negligible DIF. The male/female DIF results for the SPR items resembled DIF results for the multiple-choice items in the SAT. For the African American/White comparison, SPR items exhibited more DIF than multiple-choice items. (Moderate or sizable DIF on multiple choice items in the old and new SAT-M is rare.) In particular, when African American test-takers were compared to matched groups of White test-takers, they performed less well than White test-takers on the SPR items. Although the level of African American/White DIF on SPR items was elevated, relative to the multiple-choice items, none of the SPR items in any of the final forms were flagged for exhibiting extreme DIF. The relationship between DIF and discrimination is discussed as a possible explanation for the elevated level of DIF on the SPR items. An appendix contains eight scatter plots. (Contains 6 tables, 14 figures, and 18 references.) (Author/SLD)
Publication Type: Reports - Evaluative
Education Level: N/A
Authoring Institution: Educational Testing Service, Princeton, NJ.
Identifiers: Free Response Test Items; Scholastic Aptitude Test