Open AccessTest-retest stability of WAIS-R scatter indices in the elderly
Author(s) -
Anthony M. Paolo
Publication year - 1996
Publication title -
archives of clinical neuropsychology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.909
H-Index - 98
eISSN - 1873-5843
pISSN - 0887-6177
DOI - 10.1016/0887-6177(96)83974-6
Subject(s) - wechsler adult intelligence scale , stability (learning theory) , psychology , audiology , medicine , statistics , mathematics , psychiatry , cognition , computer science , machine learning
The test-retest reliability and clinical stability of WAIS-R VIQ-PIQ differences, inter, and intrasubtest scatter were investigated in a sample of 61 normal persons 75 years and older. The test-retest coefficient was.76 for VIQ-PIQ discrepancy, ranged from.05 to.56 for the intersubtest scatter range, and from.08 to.43 for intrasubtest scatter. In terms of clinical stability, 56% of subjects maintained a similar magnitude and direction of meaningful VIQ-PIQ differences from test to retest. Classification of subtest strengths and weakness from test to retest was generally poor with an average disagreement of 52% from the first to the second assessment. Intrasubtest scatter also displayed poor clinical stability with 25-50% of subjects demonstrating meaningful changes on retest.