This volume presents the findings of a large-scale study of individual differences in spoken (and heard) language development during the school years. The goal of the study was to investigate the degree to which language abilities at school entry were stable over time and influential in the child's overall success in important aspects of…

In many languages, significant numbers of words are used in more than one grammatical category; English, in particular, has many words that can be used as both nouns and verbs. Such "ambicategoricality" potentially poses problems for children trying to learn the grammatical properties of words and has been used to argue against the logical…

This dissertation examines three processes affecting consonants in child speech: harmony (long-distance assimilation) involving major place features as in "coat" [kouk]; long-distance metathesis as in "cup" [p[wedge]k]; and initial consonant deletion as in "fish" [is]. These processes are unattested in adult phonology, leading to proposals for…

The relation of social and linguistic input measures to early vocabulary development was examined in 30 low-income African American mother-infant pairs. Observations were conducted when the child was 0 years, 1 month (0;1), 0;4, 0;8, 1;0, 1;6, and 2;0. Maternal input was coded for word types and tokens, contingent responsiveness, and…

This study describes how young Spanish-speaking children become gradually more adept at encoding temporality using grammar and discourse skills in intra-conversational narratives. The research involved parallel case studies of two Spanish-speaking children followed longitudinally from ages two to three. Type/token frequencies of verb tense,…

Little research has been conducted on the development of suprasegmental characteristics of vocalizations in typically developing infants (TDI) and the role of audition in the development of these characteristics. The purpose of the present study was to examine the longitudinal development of fundamental frequency (F[subscript 0]) in eight TDI and…

This study examined the effects of being born very preterm on children's early language development using prospective longitudinal data from a representative regional cohort of 90 children born very preterm (gestational age less than 33 weeks and/or birth weight less than 1,500 grams) and a comparison sample of 102 children born full term…

A longitudinal study of four 17- to 33-month-olds revealed that their linguistic selection at the one-word stage was governed by principles of informativeness, while the two-word stage was characterized by new, or a combination of new and old, information. (Author/CB)

Examines the CDI-WORDS Short Form vocabulary checklist as an index of language production. The study focuses on the associations between this short form and directly observed measures of lexical production; the associations between short-form checklists administered at different ages; the predictive associations between short form scores and…

Examined the strength of the association between language exposure estimates and vocabulary learning for simultaneous bilingual infants with differing patterns of exposure to the languages being learned. Findings revealed that the correlation was strong, even for children whose language environments changed by more than 20% between observations.…

A microgenetic approach to studying grammatical morpheme learning uses longitudinal data from two children learning English in different ways. Eight general attributes of morphological systems are proposed that will promote or inhibit the emergence of filler syllables during development. (Contains 86 references.) (Author/LB)

Presents a diary-and-videotape study of the production of phonological segments by a Spanish-English bilingual child. Results reveal a consistent separation of the phonological systems of the two languages from the earliest period, with minimal interference at later times. (17 references) (Author/CK)

Reports on a longitudinal study of the relationship between productive phonological ability and awareness in children under the age of six. The study followed 45 subjects with variant productive phonology levels from the mean age of 3 years, 6 months to 6 years, 0 months. As a child matures in productive phonology, accompanying exponential growth…

Explores one aspect of the possible relationship between speech perception and the awareness of linguistically relevant sound patterns in the first years of word reading. No evidence emerged of a concurrent association between children's skills in labelling speech sounds at the beginning of words and their phonological awareness of either rhyme or…

Longitudinal and cross-sectional studies of young English-, French-, and Korean-speaking children showed that, across the three languages, children go through three similar developmental stages before they acquire the adult system of answering negative questions. Several language-specific phenomena were observed. (BC)