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

Samples in research on individual and group differences may be selected based on whole scores which differ from the population mean. Children are diagnosed in clinical practice with a whole score. These procedures produce regression to the population mean which can affect accuracy and adequacy of part score interpretations. (Author/DWH)

A study involving the construction and administration of Black and White intelligence test forms to 386 Blacks and 386 Whites indicated that Blacks did not perform significantly better on the Black test form, suggesting differences in Black special education placement rates are not affected by underrepresentation in the test development group.…