An Experimental Analysis of Accommodation Decisions on Large-Scale Mathematics Tests

By Robert Helwig, Gerald A. Tindal. 2003

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Developing a New Paradigm for Conducting Research on Accommodations in Mathematics Testing (2007, background): “In order for test accommodations to be effective at reducing non-construct related variance, students require prior experience with accommodations in instruction (Helwig & Tindal, 2003).”
Effects of an Oral Testing Accommodation on the Mathematics Performance of Secondary Students With and Without Learning Disabilities (2007, background): “With regard to individual differences, the findings of this study, similar to those of Helwig and Tindal (2003), Elbaum, Arguelles, Campbell, and Saleh (2004), among others, suggest that accommodations are not uniformly benign, but instead have the potential to interfere with performance for some st”
Comparing DIF Across Math and Reading/Language Arts Tests for Students Receiving a Read-Aloud Accommodation (2006, background): “Past studies have indicated that educators are not always accurate in identifying which students will benefit from testing accommodations (Fuchs et al., 2000; Helwig & Tindal, 2003).”
Test Accommodations for Students With Disabilities: An Analysis of the Interaction Hypothesis (2005, background): “Like Helwig and Tindal (2003), they found poor correspondence, in that teachers provided accommodations to many students who did not achieve a differential boost. In fact, more students for whom the teachers thought accommodations were not warranted achieved the differential boost than did students ”