Children's early utterances were studied to determine whether there are developmental changes in the content, context, frequency, and form of their speech and the degree to which the changes correspond to changes in Piagetian cognitive stage. Twenty children were studied; six were 10 or 11 months old, and the remaining 14 were distributed evenly…

This paper reports on a longitudinal study of the acquisition of the voicing contrast in American-English work-initial stop consonants, as revealed through instrumental analysis of voice onset time characteristics. Four monolingual children were recorded at approximately two week intervals, beginning when the children were about 1;6. Data provide…

The acquisition of rules for formulating causative verbs was studied with children over a period of a few years. Most of the data is based on the spontaneous speech of the author's two daughters, from age 2;6 to 6;2 and from age 2;4 to 3;11. It was hypothesized that there are at least two prerequisites for the child's formulation of a general rule…

This Cooperative Language Development Project had two objectives: (1) to provide a modified language program for culturally disadvantaged first graders and (2) to evaluate the effectiveness of the program in terms of academic, intellectual, and linguistic growth. In a 2-year intervention program experimental versions of the Peabody Language…

The significance of three mothers' speech for their infants' language development is considered in a continuing longitudinal study. The study began when the children (two females and one male) were 5 and 6 months of age and will continue until the subjects are 3 years old. In the speech data reported the children were from 6 to 18 months of age.…

To determine the relative effectiveness of different methods of preschool educational intervention for disadvantaged children, comparisons were made of five programs whose levels of structure ranged from the traditional nursery school to a highly structured preschool. Subjects were 79 4-year-olds representing a wide range of ability levels.…

This longitudinal research examines the development of literacy skills in the context of an educational microcomputer implementation conducted to evaluate word processors and LOGO as tools for cognitive enrichment. Three classes including 87 children in Fredericton, New Brunswick, Canada are being followed from first- through third-grade. One…

The first part of these findings is a report on a study of the characteristics of 120 Spanish-English bilingual children's speech over a two-year period in the classroom, on the playground, and at home. Three types of language measures were used as well as audiotaped speech samples taken in the three communication settings. Preliminary findings…

Early child phonology was studied using phonetically transcribed samples that six parents provided of their children's vocalizations, beginning when the children were about 11 months old and continuing to four years of age. The primary study objective was to obtain a sufficient amount of longitudinal data from several children to support a…

Observations of a 12-year-old boy provide an in-depth look at the writing of a successful adolescent writer, as it developed over a 2-year period. The subject was interviewed once a week in his home. In addition to the information obtained in interviews, his texts were analyzed for formal features. Three factors emerged as particularly…

This is a longitudinal study of a child's acquisition of Mandarin phonology between the ages of 1;2 and 2;8. During this period, the child was much less verbal than many children reported in other child phonology studies. The study consists of two parts. The first part is a description of the child's "proto-language," in which he used…

A study is reported relevant to the relationship between first words learned by children and gestural symbolization under a variety of contextual conditions. It is part of a larger longitudinal study of 32 children at 10, 13, 20, and 27 months of age. The children were seen in three standardized situations for eliciting gestural and vocal symbols:…

This article hypothesizes that language repetition of young children (in the sense used by Kobashigawa and Snow) does not help language acquisition. The evidence comes from the results of a prior study in which no indication was found that mothers who repeat themselves a great deal have children who acquire language more quickly. However,…

This investigation studied the development of the form and function of negative sentences, and how it relates to the input on negation that children receive from their parents. The data came from three children: two from a previous study (Bellugi) and one the son of the investigators. A detailed analysis was carried out of the syntactic form and…

In any successful conversation, a speaker must select both what is said and how it is said on the basis of various estimates of the listener's abilities, knowledge and interests. Most research on linguistic input to children has focused on the tendency of speakers to simplify their speech for the younger listener. Little attention has been paid to…