1.What is second language acquisition?
2.What is Language Acquisition?
3.What are differences acquisition and learning?
4.What are the second language acquisition barriers?
5.When is the best age to learn second language?
6.What is considered proficient in second language?
7.What is the ultimate goal in acquiring a second language and how does this affect at what age it is taught?
8.How an adult amnesia acquire second language?

1.SLA is as the way in which people learn a language other than their mother tongue, inside or outside of a classroom.

2.Language acquisition is the study of how a person learns a language. In a baby this would be how they develop their communication and speaking skills. Sometimes it can refer to second language acquisition, which means how a person learns a second language.
3.The term acquisition is used to refer to picking up a second language through exposure whereas the term learning is used to refer to the conscious study of a second language.
4.Acquisition barriers:
1.Syntax structure.
4.Semantic concepts.
5.Lenneberg in vansikle proposed that natural language acquisition through exposure can only happen during the critical period (ages 2-puberty).Before age 2 the brain has not developed enough, and after puberty it is has developed too much, with the loss of “plasticity” and the completion of “lateralization” of the language function. While in The Brian Plasticity Hypothesis: Hypothesis: A child brain is plastic in comparison plastic in comparison to that of an adult, and after the age of about 9 after the age of the brain years, the brain progressively becomes “stiff and rigid. ”The child develops a conditioned The child develops a conditioned reflex “turn from one language to the other without confusion, translation or a mother translation or a mother- -tongue tongue accent.Lateralization:As the brain matures, certain functions are assigned to either the left or right hemisphere.Upon the completion of lateralization, it is believed to be difficult for learners to acquire fluency and authentic “native-like” pronunciation in a second language.
6. Children are considered fluent when they can communicate at a level appropriate for their age. An adult must communicate with other about much more complicated issues, where deficiencies in vocabulary and syntax show more readily. more readily.” Reading, writing, speaking and listening are all important factors in language acquisition. Adults are expected to be more competent than children because of age and maturity, and “adult” conversations may vary greatly from those of children. ”
7.The ultimate goal of acquiring second language
According to (Ausubel, 1964 in Vansickle) Adults have a much greater vocabulary and Conscious grammatical generalizations while the age of second language taught; Some research has shown optimal ages around 7-8 years and 10-12 years, and Scovel (1999) in Vansickle suggests that Younger=Better is a myth supported by the media and “junk science.”

8.Amnesia is losing their long-term memory but their short-term memory and their ability to speak and understand are entirely unimpaired. So they able to acquire second language as well as normal peoples.

Amnesia Is The Main Moduler. Posted September 29 2011. Accessed. 18 October 2011. Available online at inside-the-brain.com.
Ellis. R. (1986). Understanding second language acquisition. Oxford University Press
VanSickle, Julia & Ferris, Sarah. (No Year). Second Language Acquisition the Age Factor. Avaolable online at lilt.ilstu.edu/rlbroad/teaching/.../smith.pdf

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