Language Aquisition

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by kwalantas
Last updated 6 years ago

Human Anatomy

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Language Aquisition

The critical-age hypothesis states that, "language is biologically based and the ability to learn a native language develops within a fixed period." This hypothesis provides insight into when humans aquire language and how little exposure to langauge at a young age can negatively impact a person's linguistic abilities.

The chapter speaks about an interesting theory that language aquisition does not have a causal relationship with intellectual ability. This idea proliferates the theory that language is biologically based, not inherited. The chapter best illustrates this idea through the example of Christopher.

Language Aquisition

Chapter 2 seeks to answer the following question: What Role does the Brain Play in Language Aquisition?

In an attempt to answer this question, the chapter discusses how various studies and technological advances have given insight into the human brain and the way we, and other species, aquire languages.

The Role of the Brain

The Critical-Age Hypothesis

Case Study: Christopher

Researchers have studied patients with aphasia and other individuals with brain injuries to determine that the left hemisphere of the brain is responsible for the development of language. Damage to the left hemisphere, especially later in life, can severely damage a human's linguistic ability.These tests were confirmed by technological advances where PET scans and MRI scans show a concentration of emissions on the left hemisphere of the brain.

Christopher has a relatively low IQ and lacks necessary life and motor skills needed to live a normal life within society. However, he has a great mastery of linguistics as demonstrated by his ability to translate written texts from 15-20 languages into English with high grammatical accuracy.


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