Poster Abstracts

Abstract

As motor skills deficits are common in many neurological/neurodevelopmental conditions, clinicians often question whether WISC-V Coding should be omitted/substituted when calculating FSIQ. Not only is this inconsistent with standard administration, but counter to the test developer’s assertions that motor requirements are minimal for Coding. To examine the relations between motor skills and WISC-V Composites and Subtests, we correlate two common tests of motor control (Beery VMI [VMI], Grooved Pegboard [GP] ) in a mixed sample of children (N=77) presenting for neuropsychological evaluation (55 epilepsy, 22 neurodevelopmental disorders). While correlations were robust between the motor tasks and all WISC-V scores (p<.001), The VMI showed strongest relations with the VSI composite (.715) and Block Design subtest (.709); the correlation between VMI and Coding was the 9th weakest (.348). GP correlated most robustly with the WMI. The correlation between GP and Coding was the 5th weakest (.404) with the top four having no motor component at all (Digit Span, Visual Puzzles, Picture Span, Similarities). Findings suggest that the relations between motor skills and Coding are overestimated and that motor skills deficits are best considered a general marker of cognitive dysfunction.

First AuthorWilliam S MacAllister
Second AuthorClaire V David
Third AuthorMarsha Vasserman
Fourth AuthorSusan Raiford