This article offers the author's commentary on the Multiple Grammars (MG) language acquisition theory proposed by Luiz Amaral and Tom Roeper in the present issue. Multiple Grammars advances the claim that optionality is a constitutive characteristic of any one grammar, with interlanguage grammars being perhaps the clearest examples of a…

Optionality is a central phenomenon in second language acquisition (SLA), for which any adequate theory must account. Amaral and Roeper (this issue; henceforth A&R) offer an appealing approach to it, using Roeper's Multiple Grammars Theory, which was created with first language in mind but which extends very naturally to SLA. They include…

Suggests that code-switching is not only a neurolinguistic process but also a psychological phenomenon with substantial reference to personality structure and dynamics. The bilingual's personality as a "code-switcher" is tentatively defined. (Author/CB)

Relates the theory of interlanguage in second language learning to a theory of interlanguage in translation. (AM)

Discusses both the pedagogical arguments and the psycholinguistic rationale for small-group work in the second language classroom. Claims that the negotiation work possible in group actiity makes it an attractive alternative to the teacher-led discussion. Reviews research findings on interlanguage which generally support the claims made for group…

Argues against the current oral proficiency testing approach in favor of an approach in which researchers come to understand what it means for real speakers to interact with each other in the everyday world of human activity. Problematic trends are addressed, and a principled theory of oral proficiency is identified. (DJD)

Explores the validity of Labov's (1969) "Observer Paradox," and the five axioms describing the problems involved in linguistic research, for interlanguage research. Methodological remedies are suggested. (AM)

Critiques Pienemann and Johnston (1987), an influential model of the acquisition of English as a second language (ESL) morphology. The article demonstrates that their proposals are incompatible with syntactic analyses of word formation and emphasizes that second language researchers must ensure that models of second language acquisition are…

Ellis's target article suggests that language processing is based on frequency and probabilistic knowledge and that language learning is implicit. These findings are consistent with those of SLA researchers working within a variationist framework (e.g., Tarone, 1985; Bayley & Preston, 1996). This paper provides a brief overview of this research…

A paradigm gap has prevented research on second language acquisition theory and indigenized varieties of English from making substantive contributions to each other. The varieties of English represent several significant sociolinguistic and psycholinguistic variables, the investigation of which will put second language acquisition theory on firmer…

Presents arguments for the view that pidginization can be a model of early second language acquisition, decreolization can be a model for later second language acquisition, and creolization is inappropriate for any aspect of this process. (Author/AM)

Questions the value of the theory of interlanguage for language learning research. (AM)

The three papers presented here are critiques to a Doctoral Dissertation defense titled "Interlanguage Pragmatics: Requests, Complaints, and Apologies." The responses are written by the "disputants" or members of the candidate's dissertation review committee. The first paper, "Den empiriske undersogelse i 'Interlanguage Pragmatics'" (The Empirical…