A series of unordered recall tasks was administered to congenitally deaf subjects in three experiments using American Sign Language (ASL). The findings refuted the suffix effect resulting solely from sensory store differences or the effect arising from differences in processing "static" versus "changing-state" input.…

The ability of preverbal infants to abstract a prototypical representation of a category, when presented with examples of an artifically constructed category, was investigated. It was determined that infants could process visual information constructively and could take a more active role in category formation than previously believed. (Author/MH)