Abstract
The validity of an audiocassette accommodation for the Test of Adult Basic Education was assessed with 500 adult education students. Students completed Survey Edition Forms 7 and 8 with and without the audiocassette. Equivalence coefficients range from .71 to .83 (ps < .001) across the tests. The best predictor of the supplement's benefit across the tests is improved performance on the Test of Adult Basic Education Reading test (r = .57, p < .01). Differences between Reading test scores with and without the audiocassette are used to determine students for whom the audiocassette might be a valid accommodation.
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