申論題

       Language deprivation occurs due to a chronic lack of full access to a natural language during the critical period of language acquisition (when there is ans elevated neurological sensitivity for language development), approximately the first five years of a child's life (Mayberry & Lock, 2003; Newport, 1990). Language deprivation during the critical period appears to have pema anent consequ uences for long-term neurological develo lopment (Leybaert & D'Hondt, 2003). Neurological development can be altcred to the extent that a deaf child "may be unable to develop language skills sufficient to support fluent communication or serve as a basis for further learning" (Lederberg et al. 2013). 

       Exposure to a fully accessible language has an independent influence e on brain developmer ent separate from only the auditory experience of hearing loss. Indeed, recent neuroimaging studics indicate the presenc ce of adult neurostructural differences in deaf people based on timing and quality of language access in early childhood (Mayberry ct al., 2011; Penicaud et al., 2013; Skotara et al., 2012).

 Hall et al. (2018). Language Deprivation Syndrome: A Possible Neurodevelopmental Disorder with Sociocultural Origins 

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