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…

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,…

Second language (L2) motivation has long been regarded as one of the requisites for and predictors of success in L2 learning. The scholarship on L2 motivation has grown steadily over the past 60 years, yielding several theories through a range of methods. Building upon this tradition, this paper proposes a methodological contribution to the…

Causal inference is a fundamental goal of many research endeavors, including scholarship in the field of language education and learning. Randomized controlled trials are considered an ideal design to test causal claims, but not all claims can be subjected to experimental treatment due to ethical and practical constraints. In this article, we…

Against the backdrop of greater emphasis on learner centredness and growing attention to learners' voices in recent decades, concerns have been raised over researchers' dominance in shaping research scope and findings. Whether it be quantitative, qualitative, or mixed-methods research, learners' voices are mostly absent at the methodological…

This paper gives an account of the impact of spaces of linguistic non-understanding and spaces of linguistic partial understanding in the first author's linguistic ethnographic doctoral study of lawyer-client communication within UK immigration legal advice meetings. The paper uses the researching multilingually framework as a lens for exploring…

Peter MacIntyre's 35-years of research in SLA, psychology of language learning, and communication was systematically reviewed in six sections driven by subjective guidelines developed for the purposes of the present survey. To operationalize the objectives of the sections, an impressionistic methodology was created for analysis, according to which…

In this article, we highlight the important achievements of the editors and contributors in this special issue. We argue that this collection of studies on individual differences (IDs) advances the field in terms of theoretical diversification, methodological improvement, and pedagogical innovation. We also contend that a renewed interest in ID…

Many scholars have identified teacher education (TE) as a crucial site for strengthening the research-practice interface. Much of this work has focused on formal TE opportunities, English-language instructors, or university-level contexts. Less is known about how other educator demographics engage with second language (L2) research throughout…

Goals are central to understanding how students learn a second language. Much of the existing research on goals in the field of language learning has focused exclusively on achievement goals, particularly mastery and performance goals. However, exclusively focusing on achievement goals precludes language researchers from exploring other important…

This study investigates the interpretation of disjunction words (Italian 'o') in negative sentences by Italian monolingual and bilingual (L1 Italian - L2 English) children and Italian adults. Participants were asked to judge Italian sentences corresponding to the English sentence 'This animal did not eat the carrot or the pepper'. According to the…

This article reports the findings of a study undertaken to document and explain the use of English in signage in Costa Rica, a Spanish-speaking country. The linguistic landscape has emerged as an important, viable field of research. In order to investigate how, when, and why the use of English manifests itself, a corpus of 169 photographs of signs…

This systematic review synthesizes recent trends in English for Specific Purposes (ESP) research, examining 149 empirical studies published in Social Sciences Citation Index (SSCI) journals between 2014 and 2023. Employing a six-dimensional coding framework, we investigated participants, pedagogical methods, research methods, research foci,…

In our article, we investigate the complex dynamics of linguistic understandings and mis- or non-understanding within multilingual contexts. Through the lens of sociolinguistic exploration, we navigate the multifaceted landscapes of language use, applying a multi-perspective approach and the triangulation method to explore the depths of linguistic…

Nowadays there are more and more studies investigating the joint role of research and practice in the field of applied linguistics. Previous studies have identified many problems or obstacles that led to ineffective communication between the two stakeholders; however, there is little research exploring teacher and researcher identities (cf.…