This commentary discusses the issue of small samples in instructed second language acquisition research. We discuss the current state of affairs, and consider the disadvantages of small samples. We also explore other considerations regarding sample size, such as research ethics and ecological validity. We present a range of recommendations for…

The Douglas Fir Group (2016) sought to articulate a transdisciplinary agenda for SLA but said little about multilingualism specifically. Moreover, many multilinguals are under siege in a worrisome world where threats to human difference have risen to the mainstream in the aftermath of Brexit and the 2016 U.S. presidential election. I argue that…

This article explores ways in which a dialogue between researchers and practitioners can be bidirectional, effective, and beneficial for the two professional communities. We suggest concrete directions for second language (L2) research: (a) a collaborative mindset, (b) the nature of research, (c) venues for dialogue, and (d) institutional support.…

Multiple regression is a family of statistics used to investigate the relationship between a set of predictors and a criterion (dependent) variable. This procedure is applicable in a variety of research contexts and data structures. Consequently, and similar to quantitative traditions in sister-disciplines such as education and psychology (see…

In this article we introduce Positive Psychology (PP), a relatively new subfield of psychology, and outline its development since the year 2000. We describe ways in which PP represents an exciting addition to the Second Language Acquisition (SLA) literature and the ways it is already influencing trends in education generally, thus creating…

Null hypothesis testing has long since been the 'go-to analytic approach' in quantitative second language (L2) research (Norris, 2015, p. 97). To many, however, years of reliance on this approach has resulted in a crisis of inference across the social and behavioral sciences (e.g., Rouder et al., 2016). As an alternative to the null hypothesis…

As second language (L2) research adapts to the dynamics of multimodal instruction, researchers are exploring the role of captioning and textual enhancement (TE) on learner development. The present experiment assesses the differential effects of textually enhanced captions on learners' elicited imitation of L2 Spanish grammar. Twenty-eight…

In volume 103 of "Modern Language Journal," Stephen May suggested that the "multilingual turn" has not fully delivered on its promises, pointing out second language acquisition (SLA) researchers' continued focus on parallel monolingualisms rather than on dynamic bi/multilingualism, the lack of theorization of historicity in…

This special issue contains reports of research on a variety of variables that are hypothesized to have an impact on how practice affects language learning. This includes spacing of practice opportunities, the provision of feedback, training working memory, and oral versus written input. Each study is complex and clearly contextualized within the…

By tradition, L2 motivation research has a monolingual bias--the motivational systems of a learner's different languages conceptualized as separate entities rather than as cognitively interconnected. At a time when multilingualism has become a new world order (Douglas Fir Group, 2016) and where there is evidence of powerful identity experiences…

The field of second language studies is using increasingly sophisticated methodological approaches to address a growing number of urgent, real-world problems. These methodological developments bring both new challenges and opportunities. This article briefly reviews recent ontological and methodological debates in the field, then builds on these…

Ensuring internal validity in quantitative research requires, among other conditions, reliable instrumentation. Unfortunately, however, second language (L2) researchers often fail to report and even more often fail to interpret reliability estimates beyond generic benchmarks for acceptability. As a means to guide interpretations of such estimates,…

These concluding reflections seek to put the articles of this special issue in a broader context. The article begins by looking at the ideas of cognitive linguistics and linguistic relativity that are invoked. It then considers the questions that arise about the relationship between two or more languages in the same mind, the differences between…

In this article, we introduce a template of methodological considerations, termed "the dynamic ensemble," for scholars doing or evaluating empirical second language development (SLD) research within a complexity/dynamic systems theory (CDST) framework. Given that CDST principles have yielded significant insight into SLD and have become…

This study analyzes the language learning narratives of 3 NNS foreign language teachers. It uses as a theoretical framework the L2 Motivational Self System (L2MSS) (Dörnyei, 2009) but adds the dimension of psychological reactance (Brehm, 1966). Our findings indicate that the L2MSS underestimates the relationship between "I" and…