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The input hypothesis, also known as the monitor model, is a group of five hypotheses of second-language acquisition developed by the linguist Stephen Krashen in the 1970s and 1980s. Krashen originally formulated the input hypothesis as just one of the five hypotheses, but over time the term has come to refer to the five hypotheses as a group.
The input hypothesis. This states that language is acquired by exposure to comprehensible input at a level a little higher than that the learner can already understand. Krashen names this kind of input "i+1". [10] The natural order hypothesis. This states that learners acquire the grammatical features of a language in a fixed order, and that ...
Similarly to Krashen's Input Hypothesis, the Interaction Hypothesis claims that comprehensible input is important for language learning. In addition, it claims that the effectiveness of comprehensible input is greatly increased when learners have to negotiate for meaning. [5]
If this hypothesis is correct, then language acquirers must be forced to speak. According to Stephen Krashen, the Need Hypothesis is incorrect. However, Krashen does point out that need can be helpful when it places the acquirer in a position in which he or she can receive comprehensible input (CI). On the other hand, need is useless in the ...
This view is most commonly associated with Stephen Krashen and his acquisition/learning hypothesis, one of the five hypotheses often known together as the input hypothesis. Krashen's views have been criticised by other second language acquisition researchers for their lack of falsifiability, amongst other things. [3]
To separate the academic discipline from the learning process itself, the terms second-language acquisition research, second-language studies, and second-language acquisition studies are also used. SLA research began as an interdisciplinary field; because of this, it is difficult to identify a precise starting date. [5]
Earlier versions of the interaction hypothesis, particularly those of Krashen and Long, argue that comprehensible input is both necessary and sufficient for language development, [7] [16] but further research has provided evidence that comprehensible input is in fact not sufficient for second language acquisition by itself. [11]
Stephen Krashen received a Ph.D. in Linguistics from the University of California, Los Angeles in 1972. [2] Krashen has among papers (peer-reviewed and not) and books, more than 486 publications, contributing to the fields of second-language acquisition, bilingual education, and reading. [3]