Eta-squared (?[superscript 2]) and partial eta-squared (?[subscript p][superscript 2]) are effect sizes that express the amount of variance accounted for by one or more independent variables. These indices are generally used in conjunction with ANOVA, the most commonly used statistical test in second language (L2) research (Plonsky, 2013).…

Language proficiency is multi-componential in nature and, according to many SLA researchers and L2 practitioners, is best captured by the concepts of complexity, accuracy, and fluency (CAF). Two of the three studies reported in this paper adopted the Cognition Hypothesis (Robinson, 2003) as the means to address the question of whether increasing…

We used event-related potentials to investigate how markedness impacts person agreement in English-speaking learners of L2-Spanish. Markedness was examined by probing agreement with both first-person (marked) and third-person (unmarked) subjects. Agreement was manipulated by crossing first-person subjects with third-person verbs and vice versa.…

Norwegian allows filler-gap dependencies into embedded questions, which are islands for filler-gap dependency formation in English. We ask whether there is evidence that Norwegian learners of English transfer the functional structure that permits island violations from their first language (L1) to their second language (L2). In two acceptability…

This article engages with the theme of the proposed special issue in a perhaps unexpected way: for me, the 'translinguistic movement' is a pertinent reminder to move beyond the boundaries of language and other visible/audible modalities that are involved in semiosis. It also encourages us to move beyond the naïve empiricism that has shaped…

This article enters the debate about the complex and dynamical nature of second language acquisition (SLA) by discussing and commenting on Pallotti's critique of Complex Dynamic Systems Theory (CDST). Pallotti's critique brings to the fore the argument that, due to its anti-reductionist stance, CDST research fails to observe three fundamental…

As is typical across Turtle Island, the Hul'q'umi'num' (Coast Salish) language revitalization movement is being carried by adult language learners (Haynes 2010; McIvor 2015) but becoming a proficient Hul'q'umi'num' speaker is challenging given the complexity of its sound system. In this paper, we share our experiences using the speech analysis…

Knowledge of vocabulary is essential for learners of any language, and unfortunately, it has become clear recently the learners of English in a variety of contexts have not scored well on vocabulary tests. Low scores are problematic for language use and success in general, but they cause particular problems when it comes to the vocabulary needed…

Multisite research (MSR) offers the key advantages of greater statistical power and external validity via larger and more diverse participant pools. In second language acquisition (SLA) research, recent developments in meta-analysis have created a robust foundation for MSR. Although logistical and financial obstacles can complicate expansion…

Second language acquisition (SLA) is a complex, interdisciplinary field of study which has its roots in subjects as varied as cognition and psychology to social applications and actions in anthropology and sociology (Han & Nassaji, 2019). Nearly a century ago, Soviet psychologist Lev Vygotsky attempted to connect the seemingly disparate areas…

This commentary discusses some theoretical and methodological issues related to research on the spacing effect in second language acquisition research (SLA). There has been a growing interest in SLA in how the temporal distribution of input might impact language development. SLA research in this area has frequently drawn upon the rich field of…

Language can alter our mental conceptions of space, time, and categories. While there is compelling evidence that thought can be shaped by syntactic, morphological, and lexical features of a language, less is known about the impact of phonology on thought. This dissertation uses novel objects (alien cartoon figures) and pseudoword names in three…

Self-determination theory has been applied in various educational contexts. Language learning researchers have used factor analysis and structural equation modeling to investigate measures designed for this theory, but Rasch analysis has not been conducted. The Basic Psychological Needs Satisfaction and Frustration Scale (BPNSFS) and the Language…

Learners' self-initiated language learning with mobile technology occurring outside the classroom is often contextualized, heterogeneous, and idiosyncratic. In this study, we propose a time-series clustering methodology for researching informal mobile language learners' learning and development of another language, with a view to unravelling the…

According to linguistic theory, conversational Implicature (CI) is the original intent of the speech expressed by a speaker. The assumption is that both the speaker and the receiver understand and respect the communication rules. In conversation theory, this is the significant component that has been the subject of discussion. This study…