Offers standard errors of prediction and confidence intervals for Vineland Adaptive Behavior Scales (VABS) that help in deciding whether variation in obtained scores of scale administered to the same person more than once is a result of measurement error or whether it reflects actual change in examinee's functional level. Presented values were…

Proposes new method for calculating probability that student meets eligibility criteria for special education which avoids the distortion of dichotomous classification, uses multiple sources and measurement error in a meaningful manner, and promotes the accurate use of test data in eligibility decisions. (Author/NB)

Explores relevant research on appropriate use of adaptive behavior measures as assessment tool with handicapped children in institutional settings. Presents issues in adaptive behavior assessment and guidelines for practitioners to provide an empirical rationale for test interpretation. (Author/CM)