Adult second language learners arrive at the language learning situation with an already formed first language grammar system in place. The study of cross-language similarity across the first and second languages explores how the similarities and differences in the two languages make learning more or less difficult, particularly for adult…

This commentary discusses the recent keynote article in "Second Language Research" by Westergaard (2021), which extends the Micro-cue Model to second language (L2) and third language (L3) acquisition. The commentary comments on such questions as: What makes a given property easy or hard to acquire? How do learners determine similarity?…

In this commentary, I suggest that it may be helpful to think about the formidable problem space that Westergaard's (2021) Linguistic Proximity Model seeks to address at the three levels of analysis that Marr (1982) famously proposed are needed to understand any complex cognitive system. I argue that at the computational level of analysis, where…

This dissertation investigates a typologically rare linguistic phenomenon found in Irish from three different perspectives: how it challenges phonological theory, how it is used by contemporary speakers, and how its written representation affects its acquisition. Initial consonant mutation (ICM), as it appears in the Celtic languages, is known to…

Syntactic structures are unobserved theoretical constructs which are useful in explaining a wide range of linguistic and psychological phenomena. Language acquisition studies how such latent structures are acquired by human learners through many hypothesized learning mechanisms and apparatuses, which can be genetically endowed or of general…

This study attempts to tease apart the effect of dominant languages of communication on the acquisition of syntactic properties of L3 French in order to test the current L3 generative theories. Three groups of bilinguals took part in this study: L1 Persian/L2 English, with French as the dominant language of communication, L1 Persian/L2 English,…

The Functional Discourse Grammar model has a twofold objective: on the one hand, to provide a descriptively, psychologically and pragmatically adequate account of the forms made available by a typologically diverse range of languages; and on the other, to provide a model of language which is set up to reflect, at one remove, certain of the stages…

In this article, we develop a hierarchical Bayesian model of learning in a general type of artificial language-learning experiment in which learners are exposed to a mixture of grammars representing the variation present in real learners' input, particularly at times of language change. The modeling goal is to formalize and quantify hypothesized…

Transfer has been discussed from different points of view since the advent of Contrastive Analysis Hypothesis [13], [8]. Mishina-Mori [19] has defied transfer as merging grammatical properties from one language to another. The effect of transfer from a first language (L1) to a second language (L2) or a third language (L3) has been viewed…