Models of Language Production
Willem Levelt outlined the currently accepted theory of speech production. The different components of production are displayed in the Figure 1. Words are produced after the concept waiting to be produced is conceptualized, related words are selected, encoded and the sound waves of speech are produced.
While there is a large amount of heterogeneity in phenotypes of children with expressive language disorder, in terms of impairment and of severity. We can use language models such as Willem Levelt's to propose that individuals of expressive language order have a block in one or more of the cognitive steps involved in language production.
Read more about this topic: Expressive Language Disorder
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—Erich Fromm (1900–1980)