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Adding a new visual matching task to the Assessment of Basic Learning Abilities

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(May 2007)

Abstract

Nine adults with developmental disabilities were recruited based on Assessment of Basic Learning Abilities (ABLA) test performance, and received: (a) a visual-visual nonidentity matching (VVNM) task assessment, (b) a one-month retest on the VVNM task, and (c) 5 predictive task assessments requiring discriminations similar to the VVNM task. This sample was combined with previously collected data for 23 participants, yielding a combined sample of 32 participants. Order analyses showed that the VVNM task is more difficult than ABLA Level 4 (z = 2.83, p < .01). Difficulty relative to ABLA Level 6 was unclear at an alpha level of .05 (z = 0.71, p = .24). The VVNM task has high test-retest reliability (f (30) = .78, p < .01, two tailed) and good predictive validity: participants who passed the VVNM task scored higher on the 5 predictive tasks than participants who did not (t (30) = 7.22, p < .001).

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