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…

This article presents a theoretical review of and methodological guidelines for the study of two key notions in second language acquisition research, complexity and difficulty. The term "complexity" has gained considerable currency over the past decades and has taken on a wide range of meanings. We argue for a more restricted…

In this Methods Showcase Article, we illustrate mixed-effects modeling with a multinomial dependent variable as a means of explaining complexities in language. We model data on future-time reference in second language Spanish, which consists of a nominal dependent variable that has three levels, measured over 73 participants. We offer step-by-step…

Studies into the role of audiovisual input and captions (i.e., subtitles in the same language as the audio) for L2 learning have shown that such input can positively influence L2 learners' acquisition of lexical items. Few studies have explored the effects of captioning on learners' capacity to segment the speech stream. This study investigates…

Background: Vocabulary learning is an essential dimension of foreign language learning. The learners have a huge responsibility in this task. Among other factors, time constraints and an overall lack of maintained motivation on the part of students makes it especially challenging. Consequently, improving vocabulary learning requires strategies to…

Since the beginning of the 21st century, heritage language studies have drawn unprecedented attention from language-related research areas. Despite the flourishing research on heritage language learning, relatively few studies have examined the motivational profiles of L1 English speakers engaged in heritage language learning. Theoretical…

Second language (L2) viewing with captions (i.e., L2 on-screen text) is now a proliferating as well as promising area of L2 acquisition research. The goal of the present meta-analysis was to examine (a) the relationship between captioned viewing and incidental vocabulary learning and (b) what variables related to learners, treatment, methodology,…

Although the distinction between explicit and implicit (automatized) knowledge of second or foreign language (L2) is of crucial importance to second language acquisition (SLA) theory and research, it has thus far not been directly applied to L2 pronunciation. The paper attempts to fill this gap by making an initial attempt to illustrate the…

It has been largely argued that intrinsic motivation is the best and most effective in sustaining language learning. Deci and Flaste (1996) posit that motivation must come from within. While this might be possible and effective in contexts where learners have a personal interest in learning a language, it is not always the case for those learning…

This mixed-methods case study investigates learner engagement during pair work, focusing on four key aspects--behavioral, cognitive, emotional, and social engagement--and how these relate to task performance. The study included 60 university students (34 females, 26 males) learning English as a second language, who collaborated in pairs on a…

The present study investigates the impact of bidialectalism on L2 production, focusing on the role of dialect modes. Shanghai-Mandarin Chinese bidialectal speakers were recruited to produce second language (L2) English vowels under the influence of either Shanghai or Mandarin Chinese mode. Results showed that in the Shanghai mode, participants'…

This project studies how Spanish-Catalan early bilinguals use language learning strategies (LLS) differently depending on their order of language acquisition when they are learning French as an L4. Considering that the use of LLS has been pointed out as a sign of successful language learning, the study inquires whether being a simultaneous…

The perception of the teacher as the authority in the classroom is deep-rooted in education yet this notion seems to contradict the fundamental values of democratic education. Schools grant teachers an abundance of authority and decision-making power. The pedagogical implications of how teachers use this power in the classroom are not…

In this meta-analysis, we examined the average correlations (weighted for sample size and corrected for measurement error) between the varied types of motivation specified within self-determination theory (SDT) and second language (L2) achievement. We also conducted moderator analyses to explore whether these relationships are influenced by age,…

In the last decades, the field of applied linguistics has called for an expanded knowledge on language learning in different learner groups and contexts, including forced migrants and low-literate learners. This article focuses on an under-studied learner group in an under-studied context: low literate adult refugees (LESLLA) subjected to language…