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Analytic Selection of a Valid Subtest for DIF Analysis when DIF has Multiple Potential Causes among Multiple Groups

Abstract The study examined how ATFIND, Mantel-Haenszel, SIBTEST, and Crossing SIBTEST function when items in the dataset are modelled to differentially advantage a lower ability focal group over a higher ability reference group. The primary purpose of the study was to examine ATFIND's usefulness as a valid subtest selection tool, but it also explored the influence of DIF items, item difficulty, and presence of multiple examinee populations with different ability distributions on both its selection of the assessment test (AT) and partitioning test (PT) lists and on all three differential item functioning (DIF) analysis procedures. The results of SIBTEST were also combined with those of Crossing SIBTEST, as might be done in practice.

ATFIND was ... (more)
Created Date 2014
Contributor Scott, Lietta Marie (Author) / Levy, Roy (Advisor) / Green, Samuel B (Advisor) / Gorin, Joanna S (Committee member) / Williams, Leila E (Committee member) / Arizona State University (Publisher)
Subject Educational tests & measurements / Educational psychology / Special education / Accommodations / ATFIND / Crossing SIBTEST / Differential Item Functioning / Mantel-Haenszel / SIBTEST
Type Doctoral Dissertation
Extent 292 pages
Language English
Reuse Permissions All Rights Reserved
Note Doctoral Dissertation Educational Psychology 2014
Collaborating Institutions Graduate College / ASU Library
Additional Formats MODS / OAI Dublin Core / RIS

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Description Dissertation/Thesis