The linguistic performances of 15 noninstitutionalized and 15 institutionalized retarded children (mean age 13 years) were compared on usage of grammatical categories and structure of spoken language using the Illinois Test of Psycholinguistic Abilities. (Author/PHR)

This paper attempts to demonstrate that: (a) syntax is dependent on factors of cognitive and non-cognitive meaning; and (b) criteria for linguistic competence can only be fully met when full command of cognitive and non-cognitive meaning is present. Results have implications for future models of language and language acquisition. (CHK)

This book describes how the child acquires a linguistic system before he is capable of verbal utterances or has developed the ability to structure language in a meaningful way. The first chapter of the book contains a discussion of previous language development studies on learning the mother tongue and proposes a hypothesis of language development…

Bilingual and monolingual children were presented with experimental conditions where response mode and semantic information was varied. Forty children, 20 in each language-type group, responded in the present progressive and the past tenses to a series of colored drawings of simple activities. Half of the subjects responded to the task under…

Investigators agree that mothers employ a variety of request forms and that children seem to be able to respond to these forms with a remarkable degree of accuracy. It is suggested that the speech of mothers to their children is filled with requests which are really not requests at all. It is shown that many of what appear to be adult requests to…