This cross-sectional study aimed to explore the nature and the patterns of lexical growth in content and language integrated learning (CLIL) and non-CLIL learners across three successive academic years. To pursue the purpose of the study a total of 110 female students of six classes in 3rd, 4th, and 5th grades in both bilingual and monolingual…

The increasing number of students with German as a second language (GL2) poses a great challenge for schools. Previous studies showed that especially young learners with a migration background are lagging behind in the acquisition of second language (L2) literacy. Experiencing problem behaviors (PB) in addition, might pose even greater challenges.…

Vocabulary acquisition is a fundamental element of mastering the English language, necessitating a comprehensive lexicon that evolves through experiential learning to facilitate accurate comprehension and production of language. The current study examined the impact of Total Physical Response (TPR) tasks on the vocabulary acquisition of Thai…

Research on the implementation of CLIL at the onset of primary school is limited and has largely overlooked the role of other sources of individual differences. This study investigated the effects of the CLIL approach to English learning, together with the effects of out-of-school exposure to the language through media and other sources of…

Recent studies highlight the important contribution of phonological working memory (PM) in the early stages of both native and foreign language development. However, research on the effects of PM training on language development is very limited. This study aimed at assessing the effectiveness of a PM training educational intervention as a means of…

It is well-documented that there is a strong relationship between vocabulary and reading comprehension in school-age children. Limited vocabulary knowledge can impact a student's reading achievement, as may be the case for school-age English Learners (ELs). This study aims to analyze the role of vocabulary in predicting reading comprehension…

The purpose of this study was to examine how classroom language contexts characterized by peer language skills and proportions of dual language learners (DLL) influenced English language development for DLL and non-DLL children. Participants were 2,131 children from 135 classrooms across preschool through Grade 3. Children were classified into…

In this randomized trial study, the authors examined the efficacy of a practitioner partnership language intervention addressing oral language learning (expressive and receptive) in young language-minority learners from multiple-language groups in Norway. Resource teachers in 16 elementary schools implemented the intervention in the first and…

Though a number of language socialization processes are theorized to promote children's heritage language proficiency (HLP), little research has considered these processes in a single study and examined their prospective relations to multiple domains of HLP in school-age children. In a two-wave longitudinal study of Chinese American children of…

In this year-long randomized control trial (RCT), we evaluated the effectiveness of a year-long, intensive, and structured virtual professional development (VPD) accompanying science-integrated English-as-second-language (ESL) instructional intervention on 187 second grade English learners' English language and literacy development in suburban…

In this thesis, I present three related papers that collectively investigate the instructional supports on screen and in the media viewing context that influenced English and heritage language vocabulary knowledge in DLLs. In study 1, I examine how specific pedagogical approaches used in educational media might benefit DLLs. In study 2, I…

This multiple-probe study examined the effects of self-regulation on the acquisition of science vocabulary by four third-grade English language learners (ELLs) with learning difficulties. The students were provided only direct vocabulary instruction in a baseline phase, followed by intervention and maintenance phases into which self-regulation…