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The Quality Of Language Input And Early Onset Effects On Linguistic And Sub Linguistic Mechanisms

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The two previous studies exemplify that the quality of language input and early onset has significant effects on linguistic and sub-linguistic mechanisms. It calls into question whether input quality is predictive of later sign language skills in deaf education program settings. In spoken languages, the quality and quantity of language input is predictive of a child’s later linguistic abilities (Cartmill et al., 2013). However, most deaf children entering education have hearing parents, creating a barrier to language development. Many deaf programs support bilingual philosophies in which the basis of English is also taught in order to facilitate communication between the deaf and non-deaf communities (Murphy-Swiller, 2014). Leah Nicole Murphy-Swiller (2014) investigates input quality within deaf education settings using American Sign Language (ASL). She hypothesizes that deaf participants learning language through slightly different modalities will differ in their ASL receptive skills and their comprehension of English grammar knowledge, even after educational instruction. This is done by comparing approximately one hundred and forty-nine 4 and 5-year-old deaf children at schools in 26 states across the United States of America. The deaf children are divided into three groups: those with ASL as their first language (L1), English as their L1, and those who spoke a sign-supported English. These groups are compared to a control group of same-aged hearing peers. All children

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