An Introduction to the Second Language Acquisition
Critical Period Hypothesis
Language Acquisition and Language Learning
History of Second Language Theories and Approach
Introduction
Language is the method of expressing ideas and emotions in the form of signs and symbols. These are used to encode and decode the information since many languages are spoken in the world. The first language is the one the baby hears from birth. Any other language learned or acquired is known as the second language. Second language acquisition, or SLA, has two meanings.
Learners acquire language through a subconscious process during which they are unaware of grammatical rules. Especially when they acquire their first language. 
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In order to acquire a language, they need a source of natural communication, which is usually the mother, the father, or the caregiver. 
Language learning is not an age appropriate activity for very young children, as learning presupposes that students have a conscious knowledge of the new language and are able to speak about that knowledge. 
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• Does not presuppose teaching
• Unconscious process
Acquisition:
They usually have a basic knowledge of the grammar.
According to Dr. Md. Enamul Hoque
The critical period hypothesis is the ability to acquire a language biologically linked to age. that is, during the growth period, from early childhood to adolescence
to learn a language. 
Behavioral approach (1900-1950)
the behaviorist, in the learning of languages the formation of habits is considered, based on the notions of stimulus and answers. . 
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Language 2 learning was most successful when it was divided into several stimulus, response links, which could be systematically practiced and mastered one at a time. And the children create new sentences that they have never learned before...
In language acquisition 1, children mastered their native language by mimicking the statements produced by adults, and thus gradually produced some form of language that would be correct or defective to be corrected.... 
Affective domain of second language acquisition
Affection refers to emotion or feeling. and they are a fundamental part of human behavior in the process of learning a second language. one of them Anxiety where three factors are identified and are
1) Communicative learning is due to the inability of the students to correctly express their ideas and thoughts
2) For fear of a negative social evaluation, the student does not have a positive social conviction in others for fear of saying something wrong during the learning process.
3) anxiety or apprehension test on academic evaluation.
Sociocultural perspectives on second language acquisition
others more importans
Empathy
Motivation
Agree (Condon, 1973). Culture, is an integrated set of behaviors and modes of perception, is important when learning a second language.
the language will always be integrated into the culture and will become part of the language along with the acquisition of a second language and its diverse cultures for effective learning
BY: KAREN MUÑOZ VARGAS
ID : 544696