Temporal Consistency of the Wais—R Memory/Freedom from Distractlbility Factor in a Nonclinical Sample

Abstract

The temporal consistency of the WAIS-R Memory/Freedom from Distractibility factor and its intrafactorial components were measured over a 4-wk. period in a nonclinical sample of 22 undergraduates. A modest but significant consistency coefficient of .49 was obtained for Memory/Freedom from Distractibility. Neither intrafactorial component manifested significant temporal consistency over four weeks. Significant retest improvements were expected and observed on Memory/Freedom from Distractibility and Advanced Computation. These retest improvements were interpreted in terms of task familiarity rather than specific content recall. The reported temporal consistency coefficients appear to represent the lowest consistency for these neuropsychological constructs. The routine use of Memory/Freedom from Distractibility was questioned pending more comprehensive measurement of reliability.

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