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Stephen Krashen’s Five Hypotheses of Second Language Acquisition

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Interested in learning more about linguistics and linguists ? Read this way.

What is linguistics? Linguistics is the scientific study of language that involves the analysis of language rules, language meaning, and language context. In other words, linguistics is the study of how a language is formed and how it works.

A person who studies linguistics is called a linguist . A linguist doesn't necessarily have to learn different languages because they’re more interested in learning the structures of languages. Noam Chomsky and Dr. Stephen Krashen are two of the world’s most famous linguists.

Dr. Stephen D. Krashen facilitated research in second-language acquisition , bilingual education, and in reading. He believes that language acquisition requires “meaningful interaction with the target language.”

Dr. Krashen also theorized that there are 5 hypotheses to second language acquisition , which have been very influential in the field of second language research and teaching

Let’s take a look at these hypotheses. Who knows, maybe you’ve applied one or all of them in your language learning journey!

1. Acquisition-Learning Hypothesis

The Acquisition-Learning Hypothesis states that there is a distinction between language acquisition and language learning. In language acquisition, the student acquires language unconsciously . This is similar to when a child picks up their first language. On the other hand, language learning happens when the student is consciously discovering and learning the rules and grammatical structures of the language.

2. Monitor Hypothesis

Monitor Hypothesis states that the learner is consciously learning the grammar rules and functions of a language rather than its meaning. This theory focuses more on the correctness of the language . To use the Monitor Hypothesis properly, three standards must be met:

• The acquirer must know the rules of the language.
• The acquirer must concentrate on the exact form of the language.
• The acquirer must set aside some time to review and apply the language rules in a conversation. Although this is a tricky one, because in regular conversations there’s hardly enough time to ensure correctness of the language.

3. Natural Order Hypothesis

Natural Order Hypothesis is based on the finding that language learners learn grammatical structures in a fixed and universal way . There is a sense of predictability to this kind of learning, which is similar to how a speaker learns their first language.

4. Input Hypothesis

Input Hypothesis places more emphasis on the acquisition of the second language. This theory is more concerned about how the language is acquired rather than learned.

Moreover, the Input Hypothesis states that the learner naturally develops language as soon as the student receives interesting and fun information .

5. Affective Filter Hypothesis

In Affective Filter, language acquisition can be affected by emotional factors. If the affective filter is higher, then the student is less likely to learn the language. Therefore, the learning environment for the student must be positive and stress-free so that the student is open for input.

Language acquisition is a subconscious process. Usually, language acquirers are aware that they’re using the language for communication but are unaware that they are acquiring the language.

Language acquirers also are unaware of the rules of the language they are acquiring. Instead, language acquirers feel a sense of correctness, when the sentence sounds and feels right. Strange right? But it is also quite fascinating.

Acquiring a language is a tedious process. It can seem more like a chore, a game of should I learn today or should I just do something else? Sigh

But Dr. Krashen’s language acquisition theories might be onto something, don’t you think? Learning a language should be fun and in some way it should happen naturally. Try to engage in meaningful interactions like reading exciting stories and relevant news articles, even talking with friends and family in a different language. Indulge in interesting and easy to understand language activities, and by then you might already have slowly started acquiring your target language!

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The 5 Hypotheses of Krashen’s Theory of Second Language Acquisition B.Ed Notes

Back to: Pedagogy of English – Unit 3

Stephen Krashen is an expert in the linguistic field. He specializes in the theories of language acquisition and development. He has published more than 100 articles since 1980 and has delivered over 300 lectures across many renowned Universities in USA and Canada. According to Krashen, language acquisition requires “meaningful interaction with the target language. ” Dr. Krashen theorized that there are 5 hypotheses for second language acquisition. All of these 5 hypotheses have been highly influential in the field of second language research and teaching.

The Life and Work of Stephen Krashen

Stephen Krashen is an American linguist who was born in 1941. He received a Ph.D. in Linguistics in 1972 and has spent his career working as a linguistics professor at the University of Southern California. Krashen’s work has earned him a number of awards and accolades. He has received the Mildenberger Award and the Pimsleur Award for his writing and the Dorothy C. McKenzie Award for Distinguished Contribution to the Field of Children’s Literature. Krashen’s theories have been widely received with positive critical acclaim and have in many cases become the educational standard for second language learning in North America.

Krashen’s work has primarily focused on his theory of second language acquisition, or the process through which individuals learn a language besides their native language. While most of his work has focused on second language acquisition among children, his research is often applicable to older language learners as well. Some of his notable books include The Power of Reading, Explorations in Language Acquisition and Use and Foreign Language Education The Easy Way, all of which are about the role of education in second language acquisition.

Second Language Acquisition and Theories of Stephen Krashen

Second language acquisition is a major area of discussion in the field of linguistics. There are many benefits to learning a second language and many parents in America want their children to learn a second language in school. In Krashen’s work, he makes an important distinction between language learning and language acquisition. In Krashen’s view, learning must be a deliberate process of building language skills through structured activities. Most people who have studied a second language will be familiar with this approach. Krashen distinguishes learning from acquisition on the basis that acquisition is an organic process that comes about through an immersion environment. Understanding this distinction is critical for understanding Krashen’s work, which can be divided into five hypotheses.

What are the 5 Hypothesis of Krashen?

Krashen’s five hypotheses are the acquisition-learning hypothesis, the monitor hypothesis, the input hypothesis, the affective filter hypothesis, and the natural order hypothesis. All five come together to form Krashen’s theory of second language acquisition.

The five hypotheses formulated by Krashen in his theory of language acquisition are as follows.

Acquisition-Learning Hypothesis

This hypothesis states that there is a difference between language learning and language acquisition. The learner acquired language unconsciously in language acquisition whereas, in language learning, the learner picks up the language through conscious discovery and by learning the grammatical rules and structures of the language.

The acquisition-learning hypothesis elaborates on the difference between language acquisition and language learning. Acquisition is unconscious while learning is deliberate. Acquisition is much closer to the way that humans learn their native languages as children: deliberate work is not typically required. Krashen’s hypothesis states that learning ought to be secondary to acquisition for second language learners. While he does not discount the importance of structured learning entirely, he strongly emphasizes the importance of immersion environments for long-term, comprehensive acquisition. Krashen describes acquisition as a student-centered approach to education, while learning is more teacher-centered. Foregrounding learning may be easier for teachers, but Krashen argues that it is less effective in the long term.

Monitor Hypothesis

According to monitor hypotheses, the learner learns the grammar rules and functions of the language consciously rather than its meaning. It lays more emphasis on the correctness of the language. There are three standards required to use this hypothesis properly.

The monitor hypothesis comes into play as an addition to the acquisition-learning hypothesis. In Krashen’s view, ”monitoring” is a skill that people acquire when they focus on learning grammar. They can monitor their own speech to edit it and correct errors. Language acquisition can be a more chaotic system that does not focus as heavily on rules, so grammar-based monitoring can help make speech more comprehensible and aligned with learning objectives. Monitoring, Krashen points out, only comes into play when learners are aware of a grammar rule, focus on that rule, and have enough time to correct speech errors. Some people seem to rely too much on their monitoring, while other speakers under-rely on it and make more mistakes as a result. In order to make the most of the monitor system, speakers need to have reasonable confidence in their speaking abilities.

• The acquired must know the language rules.
• The acquirer must emphasize the exact form of the language.
• The acquirer must review the language and apply its rules in a conversation.

Natural Order Hypothesis

This hypothesis believes that language learners learn grammatical structures universally and fixedly. This kind of learning has a sense of predictability which is akin to learning the first language. Natural Order Hypothesis is based on the finding that language learners learn grammatical structures in a fixed and universal way. There is a sense of predictability to this kind of learning, which is similar to how a speaker learns their first language.

Input Hypothesis

This hypothesis focuses more on the acquisition of the second language. It is concerned more with how the language is acquired instead of how it is learned. It believes that the learner develops the language naturally as they receive fun and interesting information. The input hypothesis attempts to explain how organic acquisition takes place. This is a major question in linguistics. Krashen proposes a simple formula: ”i + 1.” In this formula, ”i” represents the current input stage that a learner can understand. There is nothing new at this level and everything has already been internalized. The ”+ 1” indicates one level of challenge where there is a small amount of new input at each level. Once learners have mastered the new material, the input can become more complex yet again. In this way, those acquiring a second language are constantly improving and constantly challenged. It can, of course, be challenging for teachers to always observe this formula; it is intended as an ideal and a guideline more than anything else and it seeks to explain the actual process of acquisition on a practical level

Affective Filter Hypothesis

In this hypothesis, emotional factors can affect language acquisition. The learner is less likely to learn the language if the affective filter is higher. Hence, the learning environment must be stress-free and positive so that the learner can learn properly.

In Affective Filter, language acquisition can be affected by emotional factors. If the affective filter is higher, then the student is less likely to learn the language. Therefore, the learning environment for the student must be positive and stress-free so that the student is open for input.

Language acquisition is a subconscious process. Usually, language acquirers are aware that they’re using the language for communication but are unaware that they are acquiring the language.

Language acquirers also are unaware of the rules of the language they are acquiring. Instead, language acquirers feel a sense of correctness, when the sentence sounds and feels right. Strange right? But it is also quite fascinating.

Stephen Krashen states

“Language acquisition does not require extensive use of conscious grammatical rules, and does not require tedious drill. Acquisition requires meaningful interaction in the target language – natural communication – in which speakers are concerned not with the form of their utterances but with the messages they are conveying and understanding.”

He further added,

“In the real world, conversations with sympathetic native speakers who are willing to help the acquirer understand are very helpful.”

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Krashen's Language Acquisition Hypotheses: A Critical Review

Related Papers

International Journal of Social Research

Mzamani Maluleke

The monitor model, being one of its kind postulating the rigorous process taken by learners of second language, has since its inception in 1977, stirred sterile debates the globe over. Since then, Krashen has been rethinking and expanding his hypothetical acquisition notions, improve the applicability of his theory. The model has not been becoming, and it therefore faces disapproval on the basis of its failure to be tested empirically and, at some points, its contrast to Krashen’s earlier perceptions on both first and second language acquisition. In this paper, the writers deliberate upon Krashen’s monitor model, its tenets as well as the various ways in which it impacts, either negatively or positively upon educational teaching and learning.

Amalia Oyarzún

Aufani Yukzanali

Many theories on how language is acquired has been introduced since 19th century and still being introduced today by many great thinkers. Like any other theories which arose from variety of disciplines, language acquisition theories generally derived from linguistics and psychological thinking. This paper concluded that the most important implication of language acquisition theories is obviously the fact that applied linguists, methodologist and language teachers should view the acquisition of a language not only as a matter of nurture but also an instance of nature. In addition, only when we distinguish between a general theory of learning and language learning can we ameliorate the conditions L2 education. To do so, applied linguists must be aware of the nature of both L1 and L2 acquisition and must consider the distinction proposed in this study. Furthermore, no longer should mind and innateness be treated as dirty words. This will most probably lead to innovative proposals for syllabus development and the design of instructional systems, practices, techniques, procedures in the language classroom, and finally a sound theory of L2 teaching and learning.

Karunakaran Thirunavukkarasu

Luz Villarroel Cornejo

Evynurul Laily Zen

This paper aims at revealing the factors that contribute to children's language acquisition of either their first or second language. The affective filter hypothesis (Krashen, 2003) as the underlying framework of this paper is used to see how children's perception towards the language input take a role in the process of acquisition. 25 lecturers in the Faculty of Letters, State University of Malang who have sons or daughters under the age of 10 become the data source. The data are collected through survey method and analyzed qualitatively since this paper is attempting to give a thorough description of the reality in children's language acquisition. The results show that most children are exposed to the language while interacting with their family members, especially their mothers. Another factor is children's interactions with friends. The languages used by their friends are potential to be acquired by them. These two factors strongly confirm the core idea of the affective filter hypothesis that children will learn best when they feel comfortable and are positive about the input they are absorbing. Furthermore, reading is also one of other minor contributing factors discovering the fact that the books the children like helps them construct positive perception which then encourage them import more inputs. 1. Rationale This paper is an attempt to disseminate the result of the survey-based research conducted to have a closer look at the mapping of bilingual language situation seen in certain linguistic situation in Malang. The survey that was conducted to bilingual parents is basically about to satisfy a personal yet scientific curiosity of the researchers as both parents to bilingual children and language teachers. Nothing seems really unique from the fact that children in Indonesia are born to be bilingual because, by nature, they are raised by bilingual parents in bi(multi)lingual situation. On the other hand, there have been an increasing number of studies that explore the nature of bilingual language acquisition. Some have seen negative impact of exposing second language to children (at various angles by which these previous studies have been carried out, the socio-psycholinguistic environment of bilingual children in Malang is obviously worth-researching. One of the focuses of the survey is looking thoroughly at the contributing factors of both the first and second language development of bilinguals that mainly becomes the concern of this paper. Something really significant to start with is the result of the survey seen from Figure 1 below that not only 16% of the children of the respondents are raised monolingual, but also 28% of them are trilingual.

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