Abstract
Test/retest practice effects among learning disabled (LD) and non-learning disabled (NLD) children were examined using the Halstead Category Test. Two experimental paradigms were performed. The first compared subjects on successive trials. The second paradigm used a control group to compare second trial performance of the experimental group with first trial performance of the controls. Both paradigms provide evidence of the relative inability of LD children to profit from practice. It is suggested that neuropsychological data can be used for short term test/retest as one indication of the efficacy of treatment intervention for learning disabled children without the practice effect being a significantly confounding variable.
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