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Updated: Mar 27, 2026

A Psychophysics Paradigm for the Collection and Analysis of Similarity Judgments
Published on: March 1, 2022
Examining accommodation effects for equity by overcoming a methodological challenge of sparse data.
1University of Saskatchewan, Canada.
Accommodations for students with special needs on a literacy test can impact their performance. Reviewing specific accommodation combinations is recommended for fair and valid test results.
Area of Science:
- Educational Psychology
- Special Education
- Assessment and Evaluation
Background:
- Accommodation is an equity issue in education, impacting students with disabilities.
- Examining the equitability of accommodation policies is crucial for student performance.
- Policies include assistive technology, extended time, and read-aloud accommodations.
Purpose of the Study:
- To assess the effectiveness of thirty-one bundled accommodations.
- Focus on students with learning disabilities, emotional/behavioral disorders, or multiple exceptionalities.
- Evaluate accommodations for a provincial literacy test in Ontario, Canada.
Main Methods:
- Quantitative analysis using log-linear analysis and odds ratio.
- Employed three adjustment methods to address sparse data challenges.
- Examined the impact of accommodation combinations on test performance.
Main Results:
- Sparse data issues in accommodation research can be overcome with adjustment methods.
- The likelihood of meeting provincial standards varies based on accommodation combinations.
- Differential effects of accommodations were observed for students with special needs.
Conclusions:
- Education stakeholders should review accommodations with significant differential effects.
- Ensuring valid and fair interpretation of test results for students with special needs is paramount.
- Findings highlight the need for careful consideration of accommodation strategies.
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