This study examines the potential of educational media to provide preschool-aged dual language learners (DLLs) with vocabulary in a new language. Drawing from dual-coding theory, the current study investigated how three distinct instructional contexts with varying degrees of incidental-intentional vocabulary exposure on screen might facilitate…

Given the size of the investment in professional development for early childhood educators and the dependence of educational reform on providing high quality professional development, the knowledge base of effective practices needs to be strengthened. In this paper, the authors report on the results of an effort to better understand the…

The purpose of this quasi-experimental study was to examine the influence of a book distribution program targeted at enhancing children's exposure to information books. The research examined whether a flood of information books in early childhood settings, placing libraries in a central role, could affect growth in language, content-related…

This study examines the effectiveness of scaling up a vocabulary intervention, pre-K-first grade, using a structured adaptation of the World of Words that allowed teachers some autonomy over its implementation. The purpose was to determine whether such an adaptation could maintain fidelity and promote positive child outcomes. Classrooms (pre-K…

There has been an explosion of knowledge over the last few years about how children's earliest experiences set the stage for success in learning to read and write. Most experts agree that children who reach kindergarten with certain characteristics--an interest in books, a fondness for conversation, a curiosity about the world--are more likely to…

This study examines the impact of 2 forms of professional development on prekindergarten teachers' early language and literacy practice: coursework and coaching. Participating teachers (N = 148) from 6 urban cities were randomly assigned to Group 1 (coursework), Group 2 (on-site coaching), or Group 3 (control group). Pre- and postassessments…

The purpose of this study was to support teachers' child-directed language and student outcomes by enhancing the educative features of an intervention targeted to vocabulary, conceptual development and comprehension. Using a set of design heuristics (Davis & Krajcik, 2005), our goal was to support teachers' professional development within the…

This study examines the impact of professional development on teacher knowledge and quality early language and literacy practices in center- and home-based care settings. Participants from 291 sites (177 centers; 114 home-based) in four cities were randomly selected to: Group 1, 3-credit course in early language and literacy; Group 2, course plus…

Developing a large and rich vocabulary is central to learning to read. Children must know the words that make up written texts in order to understand them, especially as the vocabulary demands of content-related materials increase in the upper grades. Studies have documented that the size of a person's vocabulary is strongly related to how…

The purpose of this study was to examine the hypothesis that helping preschoolers learn words through categorization may enhance their ability to retain words and their conceptual properties, acting as a bootstrap for self-learning. We examined this hypothesis by investigating the effects of the World of Words instructional program, a supplemental…

Research Findings: The purpose of this mixed methods study was to examine the efficacy of a practice-based approach to professional development for family child care providers working in low-income communities. This approach included a literacy coaching component that anchors knowledge in practice. One hundred and twenty-eight family child care…

Language and vocabulary represent the very foundation of learning to read and write. Children who do not develop strong oral language skills and vocabulary in these early years will find it difficult to keep pace with their peers. Children use the natural medium of language for thinking. Those who acquire a substantial vocabulary are often able to…

Children from diverse backgrounds are able to learn new words from educational media. However, learning is often partial and fragile, leaving much room for uncovering strategies that can increase the efficacy of educational media in supporting children's vocabulary knowledge. The present study investigated one such strategy--repeated viewing of…

Children from diverse backgrounds are able to learn new words from educational media. However, learning is often partial and fragile, leaving much room for uncovering strategies that can increase the efficacy of educational media in supporting children's vocabulary knowledge. The present study investigated one such strategy--repeated viewing of…

The purpose of this study was to examine how oral vocabulary instruction was enacted in kindergarten. Four days (12 hours) of instruction were observed in 55 classrooms in a range of socio-economic status schools. All instruction was coded for evidence of vocabulary instruction for a total of 660 hours of observation. Results revealed that…