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At least 19 recordsLinked to original sources
PubMed1990

The Child Language Data Exchange System: an update.

In a previous issue of this Journal, MacWhinney & Snow (1985) laid out the basic sketch for an international system for exchanging and analysing child language transcript data. This system--the Child Language Data Exchange System (CHILDES)--has developed three major tools for child language research: (1) the CHILDES database of transcripts, (2) the CHAT system for transcribing and coding data, and (3) the CLAN programs for analysing CHAT files. Here we sketch out the current shape of these three major tools and the organizational form of the CHILDES system. A forthcoming book (MacWhinney, in press) documents these tools in detail.

Child↗
PubMed1990

The decision-making process in child language assessment.

The task of assessing a child's language for the purpose of intervention requires the ability to interpret information from a variety of sources. Knowing how that information is to be used during therapy plays an important part in deciding what type of information needs to be collected and how it will be interpreted. There needs to be a plan that will assist the speech therapist in analysing and interpreting most of the data that would be needed when making therapy-related diagnostic statements. A systems approach offers concepts and methods for devising a plan which will outline the necessary decisions. The purpose of this paper is to present, in a flow chart, the questions that need to be asked in the process of assessing a child's language development for the purpose of intervention; to indicate the type of information that would be needed to answer the questions; to state how the information would be interpreted; to suggest the type of tools that would be needed to collect this information; and to outline how the information can be presented so that a greater quantity of data can be summarised and interpreted in a systematic manner.

Child↗
PubMed1992

Computer methods in child language research: four principles for the use of archived data.

With the increasing use of computers in language research, there is a need for caution concerning several new issues of data accountability. This paper presents four principles for archive-based language research: Maximum Readability and Minimum Bias; Consistent Encoding for exhaustive computer search; Systematic Contrastiveness; and Data Comparability in elicitation, transcription and coding. These and related principles are illustrated by examples from existing computer archives, and strategies are suggested for minimizing detrimental effects of violations. Finally, the paper describes some implications of the principles for properties of a field-wide and international standard of transcription of language data.

Archives↗
PubMed1991

Significant progress in child language intervention: an 11-year retrospective.

This literature review summarizes knowledge gained from 151 articles on child language intervention published between 1978 and 1988. A general theoretical framework for viewing language development is offered as a basis for evaluating progress in the development of language intervention efforts. New developments and issues requiring further investigations are highlighted for five themes that characterize much of the language intervention research in recent years: (1) the development of augmentative and alternative communication systems, (2) the provision of language stimulation to take advantage of observational learning, (3) the teaching of various language functions, (4) the teaching of language as a means of environmental- and self-control, and (5) the study of different types of generalization processes.

Child↗
PubMed1992

Research in child language disorders: what do we know and where are we going?

Advances in understanding the nature of language impairment in children over the past decade have been abundant. In this paper, several recurring hypotheses about the nature of the clinical disorder of language impairment in children and underlying etiologies are explored and the ways in which we are moving forward in our understanding of them are considered. Specifically, in the first part, the recent thinking on the nature of specific language impairment as a clinical concept is examined. Characteristics of the population are reviewed and the search for causation is considered. Literature on the relations between language and cognition and between language and social cognition is probed for contributions to our understanding of developmental disorders of language. Two areas in which we have seen marked progress and which hold promise for development in the coming decade are the focus of the second part of the paper. The focal areas are: computer-assisted language sample analyses and neurophysiological contribution to understanding language impairment in children. Thoughts about future directions for work in the area of developmental disorders of language are offered in conclusion.

Adolescent↗
PubMed1989

The validity of a parent report instrument of child language at twenty months.

When carefully assessed and analysed, parent report can provide a valuable overall evaluation of children's language at 20 months. Norming information and validity coefficients are presented here for a vocabulary checklist assessment included in the Early Language Inventory. Normative data are provided for fullterm, preterm, and precocious samples, including selected vocabulatory subsets that are indicative of early language learning style. The vocabulary checklist has substantial validity as indexed by correlations with the Bayley Scales of Infant Development and particularly with a language subscale derived from that test.

Child Language↗
PubMed1976

The function of imitation in child language.

The use and function of imitation were examined for seven children in the early syntactic period of language acquisition. The use of imitation was determined by the percent of syntactic imitation out of total syntactic output. Based on this measure, the children were divided according to whether they used imitations minimally, moderately, or extensively. The function of imitative repertoires was investigated by examining the lexical, syntactic, semantic, and communicative-interactional aspects of language as they were reflected in imitation. The analyses revealed that degree of imitation interacted with function of imitation in the acquisition process. Management implications are discussed.

Child Language↗
PubMed1989

The linguistic marking of agentivity and control in child language.

The present study examines the relationship between linguistic forms and the functions they serve in children's early talk about agentivity and control. The spontaneous linguistic productions of six children ranging between 1;8 and 2;8 served as the data base. Preliminary analyses of who the children referred to and what forms were used in subject position suggest that the children could be divided into two groups. Three children primarily referred to Self and relied on multiple Self reference forms in subject position, while the other children referred to both Self and Other and primarily used the Self reference form, I. A functional analysis was carried out to examine whether the seemingly interchangeable use of Self reference forms could be related to semantic and pragmatic patterns. The findings indicate that at a time before they regularly refer to others, the children systematically employed different Self reference forms to mark distinct perspectives on agency.

Child Language↗
PubMed1990

Syntactic distinctions in child language.

This paper presents a study of young children's understanding of a constraint on English word order, which is that pronouns and proper names cannot be modified by prenominal adjectives. For adults, this is a syntactic constraint: adjectives can only precede nouns, and pronouns and proper names are lexical Noun Phrases (NPs). In two analyses, the spontaneous speech of 14 one- and two-year-old children was studied. These analyses show that even in children's very first word combinations, they almost never say things like big Fred or big he. Some nonsyntactic theories of this phenomenon are discussed and found to have serious descriptive problems, supporting the claim that children understand knowledge of word order through rules that order abstract linguistic categories. A theory is proposed as to how children could use semantic information to draw the noun/NP distinction and to acquire this restriction on English word order.

Child Language↗
PubMed1989

Parent education project. III: Increasing affection and responsivity in developmentally handicapped mothers: component analysis, generalization, and effects on child language.

We evaluated the effects of a parent training program consisting of verbal instruction, modeling, and feedback on the affection and responsivity of 3 developmentally handicapped mothers towards their children. The results indicated the following: First, the training package increased maternal physical affection, praise, and imitation of child vocalizations. These parenting skills increased to levels found in comparison groups of nonhandicapped mothers. Second, the training package was more effective than verbal instruction alone, the latter being the predominant method presently used by social service workers. Third, most maternal gains were maintained over a 3- to 18-month follow-up period, although one mother required a reinforced maintenance procedure. Fourth, instructing mothers to generalize served to increase the generalization of newly acquired skills from play times (the training context) to child-care tasks (e.g., diapering, feeding). Fifth, teaching the parents to imitate child vocalizations was related to gains in both the frequency and quality of verbal behavior of the two language delayed children as measured by standardized developmental tests and in vivo comparisons with age-matched children (who had nonhandicapped parents). These results show that behavioral instruction can improve important child-rearing skills of developmentally handicapped mothers, with corresponding benefits to their children.

Adult↗
PubMed1991

U-shaped learning and frequency effects in a multi-layered perceptron: implications for child language acquisition.

A three-layer back-propagation network is used to implement a pattern association task in which four types of mapping are learned. These mappings, which are considered analogous to those which characterize the relationship between the stem and past tense forms of English verbs, include arbitrary mappings, identity mappings, vowel changes, and additions of a suffix. The degree of correspondence between parallel distributed processing (PDP) models which learn mappings of this sort (e.g., Rumelhart & McClelland, 1986, 1987) and children's acquisition of inflectional morphology has recently been at issue in discussions of the applicability of PDP models to the study of human cognition and language (Pinker & Mehler, 1989; Bever, in press). In this paper, we explore the capacity of a network to learn these types of mappings, focusing on three major issues. First, we compare the performance of a single-layered perceptron similar to the one used by Rumelhart and McClelland with a multi-layered perceptron. The results suggest that it is unlikely that a single-layered perceptron is capable of finding an adequate solution to the problem of mapping stems and past tense forms in input configurations that are sufficiently analogous to English. Second, we explore the input conditions which determine learning in these networks. Several factors that characterize linguistic input are investigated: (a) the nature of the mapping performed by the network (arbitrary, suffixation, identity, and vowel change); (b) the competition effects that arise when the task demands simultaneous learning of distinct mapping types; (c) the role of the type and token frequency of verb stems; and (d) the influence of phonological subregularities in the irregular verbs. Each of these factors is shown to have selective consequences on both successful and erroneous performance in the network. Third, we outline several types of systems which could result in U-shaped acquisition, and discuss the ways in which learning in multi-layered networks can be seen to capture several characteristics of U-shaped learning in children. In general, these models provide information about the role of input in determining the kinds of errors that a network will produce, including the conditions under which rule-like behavior and U-shaped learning will and will not emerge. The results from all simulations are discussed in light of behavioral data on children's acquisition of the past tense and the validity of drawing conclusions about the acquisition of language from models of this sort.

Child, Preschool↗
PubMed1991

A minority perspective in the diagnosis of child language disorders.

The effective diagnosis and treatment of persons from diverse minority language backgrounds has become an important issue in the field of speech and language pathology. Yet, many SLPs have had little or no formal training in minority language, there is a paucity of normative data on language acquisition in minority groups, and there are few standardized speech and language tests appropriate for these groups. We described a diagnostic process that addresses these problems. The diagnostic protocol we have proposed for a child from a Black English-speaking background characterizes many of the major issues in treating minority children. In summary, we proposed four assessment strategies: gathering referral source data; making direct observations; using standardized tests of non-speech and language behavior (cognition, perception, motor, etc.); and eliciting language samples and probes.

Black or African American↗
PubMed1989

Control and coreference in early child language.

This study investigated the relationship between control and coreference using an act-out task involving 81 children ranging in age from 3.1 to 8.0 and eight adults ranging in age from 30 to 55. The results replicated previous findings in revealing five developmental stages in children's interpretation of PRO, an empty pronominal element. A significant relationship was observed in the patterns of children's interpretation of forwards sentences containing PRO and those containing overt pronouns. However, there was no relationship in the development of restrictions on control and restrictions on coreference.

Adult↗
PubMed1989

Children's language acquisition.

Child language acquisition has only recently become an important research topic for developmental psychologists, although the universal appearance of language during the second year of life has long fascinated philosophers. For normally developing children, language emerges spontaneously as a means of talking about what they know so that they can accomplish social goals important to them. Some children, however, need to be taught. This article reviews current issues in child language acquisition and suggests a research agenda for helping those children who have difficulty mastering the fundamentals of language.

Child↗