Concurrent validity of the behavior development survey.

The Vineland Social Maturity Scale, the Peabody Picture Vocabulary Test (PPVT), the Adaptive Behavior Scale (ABS), and the Behavior Development Survey, an abbreviated five-domain version of the ABS, were administered to a stratified random sample of 111 mentally retarded individuals. The network of correlations obtained among these measures indicated that the Behavior Development Survey is a concurrently valid method of assessing adaptive behavior and demonstrates a pattern of correlations with the Vineland and the PPVT similar to that demonstrated by the more extensive ABS.