ON THE ROLE OF INPUT AND INTERACTION IN SECOND LANGUAGE ACQUISITION

The significance of input has been always a major issue in second language acquisition theories .Input is defined as "the language that is addressed to the second language learner either by a native speaker or by another L2 learner and his interlocutors". In this review paper, first the comprehensible input hypothesis as proposed by Krashen in the late 1970s is elaborated upon. The input factors are also touched upon. The criticisms raised against Krashenʹs theory has led to new lines of thinking in second language acquisition research. To mention a few the notions of Intake, noticing hypothesis and output hypothesis are other relevant issues to be discussed and elucidated. Finally, the interaction hypothesis as a vehicle to through which input can be made comprehensible is defined.