title: Developmental features of speech-sound production in language-impaired children.
abstract: The speech-sound production of severely language-impaired children was monitored in a longitudinal study. In order to generalize findings, acoustical, phonemic, and clinical observation data were collected from 30 children. Results showed that speech-sound acquisition goes through a hierarchical sequence of development and that speech-sound production will deteriorate in a predictable manner depending on the pathology. The authors hypothesize a speech-sound acquisition model, SSAM, based on the development observed.
mesh_terms: D000162:Acoustics; D002648:Child; D002675:Child, Preschool; D003463:Cues; D006801:Humans; D007804:Language Development; D007806:Language Disorders / Q000145:classification; D008137:Longitudinal Studies; D010700:Phonetics; D013057:Spectrum Analysis; D013070:Speech Therapy; D013315:Stress, Psychological