The present dissertation brings together research on heritage language acquisition and bilingual education and makes inroads into the limited research on heritage language development in school-aged bilingual children. This study explores how bilingual education, patterns of exposure, and lexical frequency shape adolescent Spanish heritage…

There is currently much controversy surrounding the cognitive advantages that are often associated with bilingualism, especially regarding the so-called executive control advantage. Recently, it has been suggested that bilingualism emerging from immersion education may not lead to an advantage in executive control, but rather to an improvement…

Purpose: Situated within a complex social-political and developmental context marked by racialization and identity formation, this research aims to illuminate the nuanced ways Latinx youth navigate their bilingual experience amidst varying educational models and linguistic environments. The overarching goal of this dissertation is to investigate…

This study examined (a) the identification of various reading groups across languages in Chinese (L1) adolescents learning English as a second language (ESL), in terms of their word-reading and reading comprehension skills, (b) overlap in reading group membership across languages, and (c) the performance of the various reading groups on…

Whilst the links between learner corpus research (LCR) and Second Language Acquisition (SLA) have long been debated, McEnery et al. (2019. "Corpus Linguistics, Learner Corpora, and SLA: Employing Technology to Analyze Language Use." Annual Review of Applied Linguistics 39: 74-92. doi:10.1017/S0267190519000096) claim that learner corpus…

In several studies it is highlighted that the early acquisition of a language in the home results in phonetic and phonological benefits, and that it is not uncommon for early learners to achieve native-like pronunciation in their heritage language. However, most of these studies have been carried out with bilinguals. The present contribution aims…

Considerable research documents students' outcomes in dual language (DL) programs, but there is little examination of students' perceptions of bilingualism and its impact on students' cognitive functioning and social relationships, especially with comparative studies across different target languages and student backgrounds. This study, which…

Research has demonstrated that students in dual-language immersion programs perform as well as, or better than, their peers in core academic content areas by late elementary school. However, the extent to which immersion education fosters bilingualism has received less attention in the literature. Using data from a four-year efficacy study of…

Research has demonstrated that students in dual-language immersion programs perform as well as, or better than, their peers in core academic content areas by late elementary school. The extent to which immersion education fosters bilingualism, however, has received less attention in the literature. Using data from a four-year efficacy study of…

Language immersion students' lexical, syntactic, and pragmatic competencies are well documented, yet their phonological skill has remained relatively unexplored. This study investigates the Spanish vowel productions of a cross-sectional sample of 35 one-way Spanish immersion students. Learner productions were analyzed acoustically and compared to…

This article investigates the differences in academic achievement trajectories from elementary through middle school among English Learner (EL) students in four different instructional programs: English Immersion (EI), Transitional Bilingual (TB), Developmental Bilingual (DB), and Dual Immersion (DI). Comparing students with the same parental…

This study compared the Mandarin performance of elementary immersion program students and high school world language program students in the same school district. A cross-sectional design was employed to gather information on Mandarin proficiency of fourth and fifth graders and Level 4 and Level 5 (AP Chinese) high school students who took the…

This study was designed to investigate the effects of age of onset and type of instruction on ultimate EFL attainment at the end of the period of normal schooling in Switzerland, measured in terms of written fluency, complexity, morphosyntactic accuracy, vocabulary size, and listening skills. Data were gathered from four groups of 18-year-old…

This paper investigates the differences in academic achievement trajectories from elementary through middle school among English Learner students in four different instructional programs: English Immersion, Transitional Bilingual, Developmental Bilingual, and Dual Immersion programs. Comparing students with the same parental preferences but who…

Thailand boasts a robust ESL system in both public and private schools, where students learn various subjects from native speakers in the English language. Foreign language classroom anxiety (FLCA) is a subject that is relevant to ESL instruction and learning. This study assesses associations between FLCA and academic performance in English and…