For more, go here: http://ms101.mysearch.com/jsp/GGmain...ge+learning%22“‘Zero option’ refers to the proposal advanced by a number of SLA researchers (e.g. Dulay and Burt 1973, Krashen 1982) and applied linguists…that grammar instruction should be abandoned in favour of creating opportunities for natural language use of the kind found in untutored settings…The zero position entails not only a rejection of planned intervention in L2 learning (i.e., by presenting and practicing grammatical features) but also of unplanned intervention (i.e. incidental error correction). Krashen (1982: 74) refers to error correction as a ‘serious mistake’. He argues that it puts students on the defensive and encourages then [sic] to avoid using difficult constructions for fear of making mistakes. Also it may disrupt the focus on communication. However, although the zero option prohibits overt correction, it does tolerate incidental feedback of the kind found in caretaker talk to young children” (pp. 47-48).