Language is inherently variable, and learner language is particularly variable. The variationist paradigm considers learner language a heterogeneously variable yet inherently rule-governed system. Specifically, learners' alternation between native-like and nonnative-like variants of a variable or invariable target native speaker (NS) form…

This study attempts to explain a systematic phenomenon that has been described in interlanguage grammars crosslinguistically: Null-Prep, which consists of omitting the obligatory preposition in certain movement constructions. We propose that Null-Prep is not related to lack of knowledge of "wh"-movement, as previously assumed, but to…

This study investigates the effects of input-based and output-based instructions on the acquisition of second language (L2) request modifiers. Four intact classes were randomly assigned to textual enhancement (TE), input flooding (IF), output-based instruction (OI), and control (CO) groups. The TE group watched some captioned videos on requests…

This study investigated the processing of English articles by second language (L2) speakers whose first language (L1) is Korean. Previous studies in L2 English article use had some issues unresolved such as using offline tasks, conflating definiteness with real-world knowledge, and operationalizing definiteness and relevant constructs in ways that…

This study aimed to identify second language (L2) developmental indices while controlling for the effects of first language (L1). More specifically, this study investigated the differences in the use of metadiscourse markers among learners from different L1 backgrounds. The following research questions were explored: (1) Which metadiscourse…

Among focus-on-form studies, oral corrective feedback (CF) has probably received the greatest attention. The majority of studies in this area appear to support a positive role for oral CF in improving interlanguage development. However, theorists adopting a nativist view of second language acquisition continue to question its effectiveness. The…

This study uses both offline and online tasks in order to investigate whether second language learners of English from an article-less first-language (Mandarin) are able to integrate the indefinite article into their grammar despite the lack of articles in their first language. This article reports on two studies, one on learners' sensitivity to…

Variability in the form of article (i.e., a and the) omissions and stressing has been attributed to a mismatch between first (L1) and second language (L2) prosodic and syntactic structures. An overlap between the L1 and L2 systems, on the other hand, is expected to contribute to native-like article productions. This case study aims to explore the…

In the related literature, it has been discussed that issues related to foreign language lexicon have been ignored; therefore, a solid theory of foreign language lexicon has not been constructed yet. In the framework of Turkish as a foreign language, the literature lacks both cross-sectional and longitudinal studies. To this end, this longitudinal…

This article investigates phenomena related to subject pronoun realization in the English interlanguage of Macedonian learners. Preliminary research indicates that learners tend to omit the subject pronoun in both referential and non-referential contexts. It can be presumed that such interlanguage features are due to crosslinguistic influence,…

This article investigates the second language (L2) acquisition of two expressions of the semantic feature [definite] in Russian, a language without articles, by English and Korean native speakers. Within the Feature Reassembly approach (Lardiere, 2009), Slabakova (2009) has argued that reassembling features that are represented overtly in the…

Han's (2009, 2013) selective fossilization hypothesis (SFH) claims that L1 markedness and L2 input robustness determine the fossilizability (and learnability) of an L2 feature. To test the validity of the model, a pseudo-longitudinal study was designed in which the errors in the argumentative essays of 52 Iranian EFL learners were identified and…

The present study explores knowledge of Spanish grammatical gender in both comprehension and production by heritage language speakers and second language (L2) learners, with native Spanish speakers as a baseline. Most L2 research has tended to interpret morphosyntactic variability in interlanguage production, such as errors in gender agreement, as…

The recognition of second language (L2) development as a dynamic process has led to different claims about how language development unfolds, what represents a learner's linguistic system (i.e., interlanguage) at a certain point in time, and how that system changes over time (Verspoor, de Bot, & Lowie, 2011). Responding to de Bot and…

This dissertation investigates the acquisition of oblique relative clauses in L2 Spanish by English and Moroccan Arabic speakers in order to understand the role of previous linguistic knowledge and its interaction with Universal Grammar on the one hand, and the relationship between grammatical knowledge and its use in real-time, on the other hand.…