Aka (2019) conducted an year-long large-scale study demonstrating that Japanese high school students who undertook extensive reading performed better than a control group who undertook grammatical instruction. Those showing the greatest gains were those of lower and intermediate proficiency. The students' achievement was measured in terms of…

In this commentary, the author defends the Multiple Grammars (MG) theory proposed by Luiz Amaral and Tom Roepe (A&R) in the present issue. Topics discussed include second language acquisition, the concept of developmental optionality, and the idea that structural decisions involve the lexical dimension. The author states that A&R's…

The central claim in Amaral and Roeper's (this issue; henceforth A&R) keynote article is that everyone is multilingual, whether they speak one or more languages. In a nutshell, the idea is that each speaker has multiple grammars or "sub-sets of rules (or sub-grammars) that co-exist". Thus, rather than positing complex rules to…

In her valuable commentary, Kerkhoff raises several issues, both empirical and conceptual. In particular, she argues that morphophonological regularities represented in associative memory might suffice for the acquisition of French grammatical gender. She thus questions whether a default implemented as a rule is necessary and whether it is even…

This article questions how two very similar sets of experiments can yield such very different findings, and comments on the differences between the studies. Here Annamarie Kerkhoff presents a commentary on some perceived differences between the studies in areas such as age groups and group sizes evaluated. Kerkhoff also comments on some…

In previous reviews of studies comparing explicit and implicit instruction (Krashen, 1981, 1982, 1999, 2003), the author argued that explicit instruction will show a positive effect only when the following conditions for the use of the conscious Monitor are met: (1) the acquirer consciously knows the rule or the meaning of the item--that is, has…

Jurgen Meisel argues that "grammatical variation...can be described...in terms of parametric variation", and--crucially for his arguments in this paper--that "parameter settings do not change across the lifespan". To this extent he adopts the standard generative view, but he then departs from what he calls "the literature on historical…

There is a long linguistic tradition in which language change is explained in terms of first language acquisition. In this tradition, children are considered to be the agents of language change, or at least the agents of changes in the underlying grammar. Since the early 1980s, this has been formulated in the (generative) terminology in terms of…

In accord with the general program of researching factors relating to ultimate attainment and maturational constraints in adult language acquisition, this commentary highlights the importance of input differences in amount, type, and setting between naturalistic and classroom learners of an L2. It is suggested that these variables are often…

Constructionist approaches to language hypothesize that grammar can be learned from the input using domain-general mechanisms. This emphasis has engendered a great deal of research--exemplified in the present issue--that seeks to illuminate the ways in which input-related factors can both drive and constrain constructional acquisition. In this…

Seeing the logical problem of second language acquisition as that of primarily selecting and re-assembling bundles of features anew, Lardiere proposes to dispense with the deductive learning approach and its broad range of consequences subsumed under the concept of parameters. While we agree that feature assembly captures more precisely the…

Error diagnosis in ICALL typically analyzes learner input in an attempt to abstract and identify indicators of the learner's (mis)conceptions of linguistic properties. For written input, this process usually starts with the identification of tokens that will serve as the atomic building blocks of the analysis. In this paper, we discuss the…

Discusses frequency effects in language acquisition. Provides an example of how frequency may relate to grammatical judgments of nonnative speakers acquisition of multiple wh-questions. (Author/VWL)

Reviews research findings on second-language (L2) interaction from the perspective of syntactic development. The article argues that better understanding of the role of negotiated interaction in L2 syntactic development requires examining the specific grammatical structures in interaction guided by the criteria of relevance, availability,…

Eight commentaries are included on an article that examined language transfer or interference from the perspective of the input the bilingual child is exposed to and argued that transfer occurs in those domains of the grammar where the language learner is confronted with ambiguous input. (Author/VWL)