RELATIONSHIP OF IQ TO VERBAL-LEARNING AND MEMORY - TEST AND RETEST

The relationship between Wechsler Adult Intelligence Scale-Revised (WA IS-R) IQ and performance on measures of memory was examined in 64 adul ts tested twice at a 2-week interval. Repeated measures analyses of va riance revealed that individuals with Low-Average WAIS-R Full Scale IQ scores performed significantly more poorly than did individuals with Average and High-Average Full Scale IQs on memory measures including t he Wechsler Memory Scale-Revised (WMS-R) General Memory and Delayed Re call indices, as well as California Verbal Learning Test (CVLT) Total Words, Learning Slope, and Discriminability. Although all three groups demonstrated significant practice effects on each memory measure, gro up differences in performance persisted at retest. Multiple regression analyses revealed that WAIS-R factor scorns Verbal Comprehension and Freedom from Distractibility accounted for up to 42% of the variance i n WMS-R and CVLT indices. Moreover, WAIS-R performance at initial test ing accounted for 22-41% of the variance in memory performance at rete st. These results are discussed in the context of the construct stabil ities of intelligence and memory, as well as the psychometric precisio n of the tests used to measure these constructs.