This dissertation is a quantitative analysis of language proficiencies through the lens of the dynamic model of multilingualism, using survival analysis to evaluate time until thresholds of foreign language proficiency are reached and nonparametric tests (Wilcoxon signed rank and Kruskal-Wallis) to compare proficiencies at distinct time intervals…

Language learning can be very emotional, as anyone who has ever tried to learn or use another language (L2) will attest. The range of emotions varies widely in both type and intensity, from the thrill of successfully articulating yourself, for example, to the anxiety of navigating a high-stakes encounter in an L2. It is not surprising, therefore,…

The measurement of second language (L2) productive lexical proficiency has driven a great deal of research over the past two decades. Research has indicated that more proficient speakers and writers tend to use a wider range of words and that more proficient writers tend to use words that are more sophisticated (less frequent in reference…

In this study, we assessed metacognition in nonnative language speech perception and production. Spanish novice learners of French identified and produced the French vowel contrast /ø/--/oe/ and, on each trial, rated their confidence in their responses. Participants' confidence in perception predicted their identification accuracy, suggesting that…

For language learners who aspire to become multilingual, commitment involves a personal journey. Defining persistence as a preoccupation with goal-focused action directed to a desired future state and drawing on research from cognitive psychology and the mental time travel paradigm, this article presents an identity-based framework of persistence…

This book contributes to emerging research on third language acquisition (TLA) and pinpoints the main factors characterising TLA as a different process and area of study from second language acquisition. Moving beyond the dichotomous conception of monolingualism and bilingualism, it proposes a holistic and interdisciplinary approach to studying…

The current dissertation investigates factors that influence usages of Japanese honorifics and explores how instructors can introduce honorifics more effectively to second-language learners. Apart from existing literature, my data includes a corpus of real-life usages of Modern Japanese, classroom observations, interviews with Japanese language…

This study explored the effect of speaking task on midclause pausing characteristics in the L1 and L2 speech of the same speakers to gain further insights into the potential relationship between pause location and stages of speech production. Participants included English L1 learners of L2 French (n = 29) or Spanish (n = 27) from the publicly…

The way in which validity has been conceptualized has changed throughout the years. The focus in validation studies shifted from evaluating distinct components of validity to developing a comprehensive argument for the use and interpretations of test scores. The argument-based approach to validity incorporates the distinct types of the…

This study reviews 71 high-quality studies of massive open online courses focused on languages (LMOOCs) that were published from the inception of LMOOCs to 2021. The purpose of this study is to gain a deeper understanding of the current state of research and identify fruitful directions for future LMOOC research. First, we reviewed three basic…

Collaborative writing (CW) involves two or more students writing a single text together. Previous studies mainly focused on students' cognitive engagement in CW and investigated their attention to various language-related problems during task interaction. However, little CW research to date has considered that engagement in language-related…

The present research aimed to explore the dynamic growth of two emotional constructs: foreign language enjoyment (FLE) and foreign language learning boredom (FLLB) among L2 learners. To do so, we used a method that would capture the inherent dynamicity of L2 learners' enjoyment and boredom during an EFL course. To this aim, a bivariate latent…

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…

This book synthesises research on very early language learning in pre-primary organised instruction settings such as kindergarten, nursery or afternoon classes. Using a framework of ecological development, it investigates the nested systems in which very young learners operate, the other agents involved in each of these systems and the influence…

Students act according to their beliefs and mindsets. Being aware of such individual differences can help L2 teachers make sound and evidence-based educational decisions. Having said this, the purpose of the current study was to explore the relationship among language mindset, language proficiency, and anxiety through a path analysis in an EFL…