Diminished effect of age and education on neuropsychological test performances of older children with learning disabilities

Previous research has shown that age and education have a significant effect on neuropsychological test scores among normals, but that these effects are sharply diminished, or perhaps totally obliterated, among adults with brain damage and children with brain damage. These findings would have their major practical clinical significance in limiting the use of age and/or education adjustments of raw scores for subjects with brain damage, especially if the adjustments were based on data derived from the study of normal subjects. The present investigation studied the effects of age and education on the Neuropsychological Deficit Scale (NDS) for Older Children scores of children with learning disabilities, aged 9 through 14 years. No significant effects among age and education variables and NDS scores were found. In fact, younger and older subgroups as well as lower- and higher-educated subgroups earned mean NDS scores that were not significantly different. It appears that the neuropsychological consequences of learning disabilities override the effects of age and education in the 9- through 14-year age range.