Background: Prominent theories of reading make the prediction that individual differences in children's word learning capacity determine the pace of their acquisition of reading skill. Despite the developmental nature of some of these theories, most empirical research to date has explored the relation between word learning capacity and reading at…

This study explored the lexical coverage of corpus-based vocabulary lists (general, academic, and content-specific) across several million tokens gathered from digital science resources (DSR) for middle school (6-8 grade) students in the United States. The goal was to estimate the extent to which a combination of well-known word lists, mostly…

In EFL countries where English is rarely practiced outside the classroom, textbooks have become the major input source for learners. Particularly in Vietnam, multiple textbook series are available simultaneously for the same grade. Thus, it is important to examine if their vocabulary is appropriate and of similar difficulty. This study aims to…

Research shows that vocabulary is the best support for students' comprehension of narrative and information texts. Often, vocabulary instruction focuses on a few target words in specific texts. However, to understand the many new words in complex texts students need to know how words work. This book, written by an award-winning authority on…

This study investigated the relative contributions of English morphological and vocabulary knowledge to second language (L2) reading comprehension among 100 adult Japanese English as a foreign language (EFL) learners. The study also investigated the extent to which the roles of morphological and vocabulary knowledge in L2 reading comprehension…

One core aspect of learning a language is developing vocabulary, an endeavor that requires a structured and principled focus in the classroom. As the EFL textbook has a central position in the language learning classroom, it should have an important role to play in structuring vocabulary development. Yet, what guides decisions concerning the…

The purpose of morphology instruction is to: (1) support accurate and fluent polysyllabic (poly = more than one) reading; (2) improve spelling of polysyllabic words; and (3) aid vocabulary development and reading comprehension. Thus, instruction needs to move from part (morphemes) to whole (polysyllabic words). This guide includes information…

Age of acquisition (AoA) is a measure of word complexity which refers to the age at which a word is typically learned. AoA measures have shown strong correlations with reading comprehension, lexical decision times, and writing quality. AoA scores based on both adult and child data have limitations that allow for error in measurement, and increase…

The American Education Research Association (AERA) is one of the largest education conferences in the world. Using the AERA Open Access Repository, we created a 5,000,000 word corpus of over 18,000 abstracts. We explored the coverages of the New General Service List (NGSL), the New Academic Word List (NAWL), and the Social Science Word List…

Studies of lexical coverage are valuable because they reveal the importance of vocabulary knowledge to comprehension. Lexical profiling research is also extremely useful because it indicates the vocabulary knowledge necessary to understand different text types such as novels, newspapers, academic lectures, television programs, and movies.…

The article presents an empirical study that investigates the single- and cross-modality relationships between different dimensions of receptive vocabulary knowledge and language skills, as well as the importance of academic vocabulary knowledge in academic listening and reading comprehension. An Updated Vocabulary Levels Test (UVLT), a Vietnamese…

Purpose: The aims of the current project were twofold: (a) to describe the use of academic words in written language samples by fifth-grade students and (b) to examine the predictive relation between academic word use in academic writing and reading comprehension. Method: Investigators utilized written expository responses of 1,128 students in…

When students read more, vocabulary knowledge increases (Cunningham & Stanovich, 2003; Krashen, 2004). Out of every 100 unknown words that students encounter while reading, they learn an average of 15 of them from text alone (Swanborn & de Glopper, 1999). In addition, as students age, they are more likely to infer word meanings, indicating…

This article describes the importance of vocabulary knowledge in adolescents' reading comprehension, particularly for students with disabilities. Students with stronger vocabularies tend to have better background knowledge and improved understanding of content-area texts. We describe evidence-based vocabulary instructional practices that…

In this article, teachers are reminded that their content subject areas require acquainting children with special words or symbols related to that subject area (e.g. mathematics or social studies). Because children can read well does not mean they would be understanding of any special reading skill required in a content subject area; that the…