Can WISC-R IQ values be computed validly for learning-disabled children?
Prior research demonstrated that the relationships between age and neuropsychological test scores are much weaker in brain-damaged adults and children than in non-brain-damaged subjects It appears that the effects of brain damage on test scores are sufficiently strong to diminish the influence of age and education Similar results have been found with learning-disabled children The present study evaluated the effect of age adjustments on WISC-R IQ values and subtest scores The results suggest that conventional scoring of the WISC-R, which requires an age adjustment to obtain the IQ, underestimates the IQs especially of older LD children, apparently reflecting the learning-disabled child's limited rate of acquisition of intellectual abilities with advancing age.
Reitan
R M
RM
Reitan Neuropsychology Laboratory, Tucson, AZ, USA.
Wolfson
D
D