The study compared the categorization skills of first-grade children presenting three levels of expressive language development (normal, mild-moderate delay, and severe delay). Results indicated a significant difference in categorization skills between the children with normal expressive language development and each of the two expressive…

Since the 1950's there has been a tremendous shift in the way language and language behavior is viewed. The shift is characterized as a general movement away from surface observation and analysis to attempts at the description and analysis of underlying linguistic forms. The interest in underlying linguistic forms has, in a rather natural way, led…

Motivational factors and unique characteristics of sign language systems are suggested as contributing to the ability of severely dysfunctional nonverbal children to make progress within a manual communication medium. (Author/EJS)