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Retarded speech development or Speech delay or delayed speech refers to a delay in the development or use of the mechanisms that produce speech. Speech, as distinct from language, refers to the actual process of making sounds, using such organs and structures as the lungs, vocal cords, mouth, tongue, teeth, etc. Language delay refers to a delay in the development or use of the knowledge of language.
Because language and speech are two independent stages, they may be individually delayed. For example, a child may be delayed in speech (i.e., unable to produce intelligible speech sounds), but not delayed in language. In this case, the child would be attempting to produce an age-appropriate amount of language, but that language would be difficult or impossible to understand. Conversely, a child with a language delay typically has not yet had the opportunity to produce speech sounds, it is therefore likely to have a delay in speech as well.
- Cleft Palate
- Down Syndrome
- Speech disorders
- Speech sound disorder
- American Speech-Language-Hearing Association (ASHA): Different Issues in Speech and Language Development.
- Parent resource of Speech and Language Development
- Parent resource for speech enrichment at home and advice for diagnosis
- Early Identification of Speech-Language Delays and Disorders
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