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Sensitive Period In Critical Period

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Introduction
It is commonly accepted that the earlier people start learning a language, the more successful they will be. However, it is difficult to ascertain how much intertwined language acquisition and age really are. The concept of a “sensitive period”, which is a phase during development when learning a particular skill can occur more effectively than later on in life, is well known in nature. A few examples are imprinting in ducks and song learning for songbirds (Clark 2009). The sensitive period is sometimes regarded as critical, implying that, once it is past, that specific skill can no longer be learnt.

The idea that human language is normally acquired during a critical period was first proposed by Lenneberg, with the Critical Period Hypothesis (CPH). Considering data regarding recovery from aphasia, Lenneberg (1967) hypothesized that language learning could only occur during a critical period, starting from age two until twelve. This happens as the lateralization of the brain, which is the specialization of the left hemisphere for language, is by then considered to be complete. Therefore, the critical period is used to explain the reason why the ‘automatic acquisition from mere exposure to a given language seems to disappear after this age [puberty]’ and ‘foreign accents cannot be overcome easily after puberty’ (Lenneberg 1967: 176). …show more content…

This essay aims to discuss the evidence concerning the CPH and to reflect upon its implications for language learning. I will first consider feral children and then second language acquisition as ways of testing the CPH, followed by the main causes of current dissent. Finally, I will conclude that the existence of a critical period remains inconclusive and suggest that a sensible period is more

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