The proposed project will examine input-output relationships in the speech of young children with specific speech-language impairment (SSLI).
The aim i s to provide information concerning the intermediaries between the assumed characteristics of adult speech and the child's production. Such information is not available and is consequently not taken into account either in the description of speech-language impairments or in the design of intervention procedures. The information is particularly important in light of suggested relationships between perceptual abilities and the nature of speech and language development. The proposed research will include six related sets of experiments: (1) discrimination of phonemic contrasts; (2) discrimination of subphonemic, acoustic features; (3) lexical recognition; (4) relationship among the adult production, the child's perception, and the child's production; (5) the relationship between perception and phonological changes in production resulting from intervention; and (6) the development and evaluation of computer-implemented models of these relationships using massively connected, parallel architectures. The subject will be normally developing children, 14 to 24 months of age, and children with SSLI, 30 to 48 months, with production vocabularies of under 50 words who have not yet begun to produce productive two-word utterances. The normal children are an important control because of their comparable linguistic level, their comparable articulation abilities, and the potential effect of their lower chronological age (and normal developmental status) on child-directed adult speech. The project brings several new experimental approaches to bear on these areas. Throughout the research, experimentally contrived words and unfamiliar referents will be used to achieve adequate experimental control. The use of an experimentally controlled procedure for sampling child-directed adult speech will add to observational data currently available. Children's phonological perception and lexical recognition will be examined at an earlier developmental level than has been previously possible using adaptations of bimodal perception procedures. Finally, models will be developed and evaluated using data collected in the course of the project and will be used to further explore potential input, perception, and production relationships.

Agency
National Institute of Health (NIH)
Institute
National Institute on Deafness and Other Communication Disorders (NIDCD)
Type
Research Project (R01)
Project #
5R01DC000583-05
Application #
3217157
Study Section
Sensory Disorders and Language Study Section (CMS)
Project Start
1989-05-01
Project End
1994-04-30
Budget Start
1992-05-01
Budget End
1993-04-30
Support Year
5
Fiscal Year
1992
Total Cost
Indirect Cost
Name
CUNY Graduate School and University Center
Department
Type
Other Domestic Higher Education
DUNS #
620128194
City
New York
State
NY
Country
United States
Zip Code
10016
Marton, Klara; Schwartz, Richard G (2003) Working memory capacity and language processes in children with specific language impairment. J Speech Lang Hear Res 46:1138-53
Schwartz, R G; Petinou, K; Goffman, L et al. (1996) Young children's production of syllable stress: an acoustic analysis. J Acoust Soc Am 99:3192-200
Goffman, L; Schwartz, R G; Marton, K (1996) Information level and young children's phonological accuracy. J Child Lang 23:337-47
Schwartz, R G; Goffman, L (1995) Metrical patterns of words and production accuracy. J Speech Hear Res 38:876-88
Schwartz, R G (1995) Effect of familiarity on word duration in children's speech: a preliminary investigation. J Speech Hear Res 38:76-84