Understanding the factors associated with variation in the implementation of educational programs has emerged as a key research focus, in an effort to identify how promising programs can be scaled up across their targeted contexts. The current study explored demographic-related variation in program dosage using a novel source of implementation…

There are few published estimates of vocabulary sizes amongst students in tertiary education. Research does not offer estimates of the vocabulary size tertiary students might be expected to possess, though estimates exist for K-12 education, some EFL contexts, and the general population. Such research is important. For reading comprehension during…

Given the growing evidence of academic language demands embodied in science practices, this study aimed to design and evaluate the effectiveness of a literacy-science integrated program that emphasized the incorporation of academic vocabulary instruction and collaborative discussion of a socio-scientific issue in sixth-grade science classrooms in…

The present study explored the impact of mobile-assisted self-regulated learning (SRL) on developing university students' knowledge of academic vocabulary in English. The participants were 49 students in experimental (N = 28) and control (N = 21) learning conditions. Those in the experimental group studied 70 academic words using digital…

Creating Habits That Accelerate the Academic Language of Students (CHAAOS) is a vocabulary intervention developed by O'Connor et al. to improve the academic vocabulary of middle school students with disabilities. This study was designed as a replication of O'Connor et al.'s study; CHAAOS lessons were taught to 33 sixth graders who received special…

This research synthesis describes, critiques, and synthesizes intervention studies related to the academic vocabulary acquisition of post-secondary English learners. Using the article matrix and the constant-comparative methods of analysis (Boeije, 2002), this critical synthesis aims to provide a knowledge point on general academic vocabulary;…

This case study focused on the design and implementation of a third-grade vocabulary-enhanced reading intervention for below grade-level readers. The activities aimed to simultaneously engage students in tending to phonological, orthographic, syntactical, and semantic elements of new vocabulary words while also taking into account the vital role…

Background: Morphological analysis skill is the ability to problem-solve meanings of unfamiliar words by applying knowledge of morphological constituents. For vocabulary words from the academic layer of English, the major, meaning-carrying morphological constituents are Latin roots (nov meaning 'new' in innovative). The degree to which…

This case study demonstrates teaching and learning activities in the school laboratory, and employs talk moves for the direct assessment of practical task effectiveness. By adopting a sociocultural linguistic approach (SCLA), learning chemistry is understood to be a discursive process in which knowledge is constructed through social interaction…

Few studies have considered academic vocabulary interventions for students who have learning disabilities (LD) and also are English learners (EL). This research explored the effects of the third year of the Creating Habits that Accelerate Academic Language of Students (CHAAOS) vocabulary intervention for eighth-grade students who received English…

English language learners (ELLs) lack academic vocabulary knowledge, an essential component that explains much of the persistent achievement gap between students who start schools as ELLs and their monolingual peers. This single-subject experimental design study addressed this issue by focusing on self-regulated vocabulary learning that helps ELLs…

Empirical evidence exists that enhancing students' language can promote the mathematics learning of multilingual students at risk, whereas other target groups (e.g., monolingual students, successful students, both with diverse academic language proficiency) have hardly been considered. This cluster-randomized controlled trial (N = 589)…

English learners (ELs) with reading disabilities (RDs) have been among the lowest performers on academic achievement tests that assess vocabulary. To meet academic demands and prepare for college or careers, ELs with RDs clearly need support in terms of vocabulary acquisition; however, relevant research is scarce. This study investigated the…

Purpose: Many preschoolers, especially those from low-income households, would benefit from instruction to enrich their vocabulary and language repertoires. Yet, explicit instruction of vocabulary and language skills generally occurs infrequently in early childhood education settings. This study investigated the additive effects of teacher-led,…

Purpose: Many preschoolers, especially those from low income households, would benefit from instruction to enrich their vocabulary and language repertoires. Yet, explicit instruction of vocabulary and language skills generally occurs infrequently in early childhood education settings. This study investigated the additive effects of teacher-led,…