The author argues against the accepted symptom of learning disabilities--a discrepancy between measured intelligence and measured educational achievement scores; and demonstrates that it is feasible to produce a quantitative definition of educational underachievement, and therefore to identify learning disabled students. (SBH)

Describes a method using age equivalents and standard scores to recreate the full range of variability in the scores of high-functioning individuals. The method allows for a more complete interpretation of performance that can lead to better educational and therapeutic programing. (Author/ABB)

Showed that the standard score difference method for determining intelligence quotient achievement discrepencies produced disproportionate racial representation, whereas the regression method produced proportionate racial representation in Learning Disabilities (LD) classes. Demonstrated advantages in measurement of discrepancies, LD program…

"Linguistic ability" is a widely misused term in foreign language literature. This confusion prompted an investigation into language aptitude testing, the specific goals of which included determining: the distribution of language aptitude across ability range; the validity of Pimsleur's suggestions of combined verbal and auditory scores;…