In this single-case study with a quasi-experimental design, we set out to examine the role of two input-based features of the language learning app Duolingo on learners' development of implicit and explicit second language (L2) knowledge. We investigated the effect of Duolingo's Stories feature and Podcast feature on two Spanish-L2 learners'…

Research has established positive associations between informal digital activities and vocabulary knowledge. However, understanding how different types of digital activities relate to various aspects of vocabulary knowledge is limited. This study examined how the purpose of informal digital activities and strategic engagement during and/or after…

While CLIL programmes have been extensively researched for their impact on L2 learning outcomes, the relationship between young learners' L2 proficiency and subject knowledge has received less attention. This study aimed to address this research gap by examining the science content knowledge of two cohorts of Grade 5 students (n = 100) from two…

Purpose: Graphotactic regularities are statistical regularities governing orthographic systems that children are sensitive to from the start of their literacy learning. The current study observed changes in children's sensitivity to a set of graphotactic patterns across different grades in elementary school and measured the contribution of skills…

Two commonly used test types to assess vocabulary knowledge for the purpose of reading are size and levels tests. This article first reviews several frequently stated purposes of such tests (e.g., materials selection, tracking vocabulary growth) and provides a reasoned argument for the precision needed to serve such purposes. Then three sources of…

The purpose of this study was to investigate the relation between the early mathematic and receptive language skills while considering letter knowledge as a mediator. Participants included 357 children with a mean age of 64.5 months and their parents. Results suggest that letter knowledge mediates the relation between the early mathematic and…

This study aimed to examine the unique and joint contributions of behavioral and emotional self-regulation to key but understudied emergent literacy and early social skills, disentangling sex-differentiated paths. The participants were 231 Portuguese preschoolers (50% boys; M[subscript age] = 59.5 months; SD = 8.5) enrolled in 47 classrooms. In…

Purpose: We examined receptive verb knowledge in 22- to 24-month-old toddlers with a dynamic video eye-tracking test. The primary goal of the study was to examine the utility of eye-gaze measures that are commonly used to study noun knowledge for studying verb knowledge. Method: Forty typically developing toddlers participated. They viewed 2…

Word semantic knowledge (WSK) is crucial to the development of one's reading comprehension ability. A total of 608 students (208 poor readers in the experimental group and 200 poor readers in the control group one, and 200 typical readers in control group 2) from grade 4 participated in this study. Selected reading ability assessments were…

The purpose of this study is to analyze the name writing skills, print knowledge, phonological awareness, and letter knowledge skills of preschool Turkish children of different socioeconomic levels concerning various variables. This study also analyzes the predictiveness of name writing in supporting early literacy skills of children. The study…

This paper reports on empirical research that endeavors to investigate the role of vocabulary knowledge in the writing and speaking performance of 54 B2 level Turkish learners of English as a foreign language (EFL). The measured aspects of vocabulary knowledge (productive vocabulary size, receptive vocabulary size, and depth of vocabulary…

Phrasal verbs (PVs) are very common in English, indicating their usefulness in everyday settings. However, it was reported that language learners generally have great difficulties in understanding and using this linguistic form. This study investigated Malaysian learners' receptive and productive knowledge of PVs, and some possible factors which…

This research study emphasized the importance of explicit instruction and repeated exposure to the target vocabulary for effective reception and production of new words among the second language learners of English. The purpose of the study was to examine the efficacy of the researcher-created supplementary for the prescribed set of vocabulary in…

Purpose: Understanding variability sources in early language interaction is critical to identifying children whose development is at risk and designing interventions. Variability across socioeconomic status (SES) groups has been extensively explored. However, SES is a limited individual clinical indicator. For example, it is not generally directly…

The National Institutes of Health has deemed illiteracy a national health crisis based on reading proficiency rates among American children. In 2002, the National Early Literacy Panel identified six pre-reading skills that are most crucial precursors to reading mastery and predict future reading outcomes. Of those skills, phonological awareness,…