Aptitude-treatment interaction (ATI) research is of both theoretical and practical interest to second language (L2) learning, since it provides insights into the processes linking learner-internal individual difference factors and learner-external contextual variables including instructional approach--variables that jointly determine L2 outcomes.…

This complex article has six subsections. Following a brief introduction, one team of three co-authors and three single authors present compact statements of their distinctive individual research perspectives on second language acquisition and teaching (SLA/T): Atkinson, Mejía-Laguna, and Ribeiro offer a sociocognitive perspective; Cappellini…

In foreign language learning, it is important that learners become autonomous and learn how to self-regulate their learning to continue language development. This article presents a self-evaluation procedure designed to promote self-regulation in speaking skills in a foreign language. This self-evaluation procedure was tested in a…

The recent dynamic turn in second language acquisition research has called for an investigation in learner agency by taking its complex dynamic nature into account. Informed by complex dynamic systems theory (CDST), this study investigated the agency of learners in a complex educational context where mainstream schooling and private tutoring…

As part of a larger project investigating language awareness in plurilingual settings across educational levels through a multiple case study, this article zooms in on students' language awareness as it unfolds in a classroom in a Danish upper secondary school, in the context of a compulsory, plurilingual general language awareness course.…

This theoretical article, with recommendations for practice, interrogates how the field discusses dual language bilingual education (DLBE) models in the United States, with international implications for bilingual, immersion, and content and language integrated learning contexts. We reconceptualize the equity problems and potentials of so-called…

Empirical work exploring additional language (L+) learning emotions has both proliferated and expanded its focus over the past 15 years. The current article explores one possibility for responding to the challenge of capturing and describing emotions in order to furnish a more contextualized, multidimensional picture of emotions in L+ learning:…

With a forward-looking and problem-solving mindset, this article aims to combine theoretical knowledge and empirical evidence from different schools of thought in the field of second language (L2) learning and teaching--namely, instructed second language acquisition, generative linguistics, and an ecological perspective that includes multiple…

Language learners are often required to negotiate classroom participation in pair and group work; therefore, willingness to communicate (WTC) could be a key determiner of second language (L2) success. Classroom WTC is volatile and influenced by interlocutor-related variables, such as reciprocal identities, group membership and atmosphere, and peer…

There are calls for developing ways to teach language that can inspire and motivate students to study additional languages. While previous research has pointed toward benefits of arts-based activities in language learning, combining language and dance has mainly been studied with younger language learners. Contextualized within the course…

Research indicates that high-immersion virtual reality (VR) has several unique affordances for language learning that contribute to learning outcomes, such as boosting learners' confidence, engagement, and motivation. However, little is known about the extent to which VR promotes language skills, in particular learners' verbal interaction using a…

Domestic immersion (DI) is an effective context for postsecondary language learning, given that DI's instructor-curated environments promote meaningful second language use while providing abundant support for learners. However, DI is at present understudied within second language acquisition research, especially when compared to its more…

The present study takes a variationist perspective to explore the varietal repertoires of adult learners of German as a second language (L2), that is, their variable use of standard German, Austro-Bavarian dialect, and mixture varieties. Forty L2 learners completed a virtual reality task involving interactions with dialect-speaking and…

In this final article in this guest-edited issue on synergies in second language acquisition and teaching (SLA/T), we attempt to bring together the main content of this issue in an overall, combined synergy statement, concluding this project as a whole. Let us remind readers of the project: A shared effort by 17 scholars taking 11 different…

As emotions research in the field of second language acquisition continues to evolve, it is equally important to explore the impact of social--emotional variables that are specifically relevant to heritage language (HL) contexts. Anchoring on foundations in critical heritage language education (HLE), this study examines the discomforts of the HL…