Success in mathematics contributes to children's future career and lifelong financial security. There have been reports that dual-language education conveys academic advantages in mathematics achievement, although there is debate. This study aimed to investigate whether dual-language education benefits children's mathematics achievement and…

This exploratory study evaluated the impact of a Spanish second language (L2) domestic immersion (DI) program that was developed expediently at a large university in the United States in response to widespread study abroad (SA) program closures due to COVID-19. Spanish language learners (n = 14) participated in an intensive, six-week summer…

This study examines first language (L1) English transfer in the acquisition of plural noun semantics in second language (L2) Arabic. Drawing on previous research on the L2 acquisition of plural noun interpretation, the study presents and discusses new production data of specific and generic definite plurals by English-speaking learners of Arabic…

Using the 2.4-million-word written Spanish subsection of the Corpus of Utah Dual Language Immersion, collected from a large-scale standardized writing assessment of K-12 Spanish second language (L2) students, this study focuses on lexical complexity as operationalized by three measures: lexical diversity, lexical density, and lexical…

This study reveals hitherto overlooked effects of age of onset (AO) in immersive school contexts, using multiple measures over time so as to focus on fluctuations and trends in individual data. The second language (L2) English development was studied in 91 children who received 50-50 content and language integrated learning (CLIL) instruction in…

Research on form focused instruction has provided support for the use of collaborative tasks in which learners focus their attention on formal aspects of language and consciously reflect on their own language use (i.e. produce language-related episodes or LREs). A strand of research on LREs in different educational contexts examines the effect of…

While the research literature on second language (L2) fluency is replete with descriptions of fluency and its influence with regard to English as an additional language, little is known about what fluency features influence judgments of fluency in L2 French. This study reports the results of an investigation that analyzed the relationship between…

The present studies revealed different factors associated with the reported advantages found in fully bilingual children for metalinguistic awareness and executive control. Participants were 100 children in Study 1 and 80 children in Study 2 in the process of becoming bilingual by attending immersion programs. In both studies, "level of…

Recent literature in second language (L2) perceived fluency has focused on English as a second language, with a primary reliance on impressions from native-speaker judges, leaving learners' self-perceptions of speech production unexplored. This study investigates the relationship between learners' and judges' perceptions of French fluency under…

This volume represents the first collection of empirical studies focusing on peer interaction for L2 learning. These studies aim to unveil the impact of mediating variables such as task type, mode of interaction, and social relationships on learners' interactional behaviors and language development in this unique and pedagogically powerful…

It is generally believed that study abroad (SA) is the most efficient and successful way to acquire proficiency in a second language (L2). SA is a crucial component of students' second language acquisition (SLA) process, for it puts them in situations in which they can use the language on a daily basis and interact with native speakers. More than…

The role of the first language (L1) in the learning of a second language (L2) has been widely studied as a source of cross-linguistic influence from the native system (Gass and Selinker, "Language Transfer in Language Learning," John Benjamins, 1992). Yet, this perspective provides no room for an understanding of language as a cognitive tool…