Purpose: The purpose of this study was to examine and compare the development of proto-imperative and proto-declarative utterances in normally developing, non-neonatally screened, profoundly deaf toddlers. Method: Both types of proto-declarative are considered to be the most basic prelinguistic and early linguistic communicative functions.…

Interview data and psychometric test results of 93 profoundly prelingually deaf adolescents and their families were factor analyzed to determine relationships between cognitive, behavioral, and environmental variables. The first factor loaded on measures of general cognitive skill, language, speech, social class, family size, and communication.…

Assessment of the prelinguistic behaviors of 43 deaf children (ages 8 to 49 months) of hearing parents in Israel found only partial resemblance to the theoretical model of prelinguistic communication in hearing infants. Unique interrelationships among pointing and early noncommunicative behaviors were found with no correlation between use of…

The author's purpose in this article is to discuss the aspects of language (especially the development of language in children) to which biological concepts are most appropriately applied. While results of past studies would seem to show that language development is contingent on specific language training, it is important to distinguish between…