There is considerable evidence that incidental vocabulary acquisition through reading accounts for a large portion of the growth in word knowledge for both first (L1) and second (L2) language acquirers. In this paper, we evaluate the Markov Estimate of Semantic Association (MESA) technique for detecting small, incremental gains in vocabulary…

Texts are a central part of reading. Yet our understandings of appropriate text features and distributions of text diets at different points in students' reading development are limited. The thesis of the essay is that, if the trajectory of struggling readers is to change, attention is needed to the features of texts and students' text diets,…

Rural students are at risk for vocabulary underdevelopment and often have less access to educational resources. The purpose of this investigation was to examine the effectiveness of an Internet-based Speech/Language Pathologist (SLP)-teacher consultation to support rural teachers' vocabulary instruction to improve their students' lexical…

A new metric, Word Maturity, estimates the development by individual students of knowledge of every word in a large corpus. The metric is constructed by Latent Semantic Analysis modeling of word knowledge as a function of the reading that a simulated learner has done and is calibrated by its developing closeness in information content to that of a…

This article examines a recent example of published research on the vocabulary profile of a financial corpus based on the Academic Word List (AWL) to illustrate not only the erroneous output from vocabulary profiling tools but also the pitfalls of using the AWL as a filter for academic lexis. Recent research has cautioned against eschewing high…

Sentence position and word length have been claimed to contribute to the perceptual salience of words. The perceptual salience of words in turn is said to predict L2 developmental sequences. Data for such claims come from sentence repetition tasks that required perceptual re-encoding of input and that did not control for focal accent. We used a…

In the present study, the natural and simultaneous first language acquisition of a German-Italian bilingual boy and an Italian monolingual girl from 1;8 to 2;1 are analyzed and compared. The investigation focuses on the rate of acquisition and the size and composition of the productive lexicons. At the end of the observation period, the bilingual…

Twenty-four studies were included in this systematic review of vocabulary research literature. The review corroborates the findings of past studies that several strategies have emerged that increase students' vocabulary knowledge. Findings further reinforce the National Reading Panel's recommendations regarding the context and magnitude of studies…

This study examined the extent to which glossaries may affect the percentage of known words (coverage) in television programs. The transcripts of 51 episodes of 2 television programs ("House" and "Grey's Anatomy") were analyzed using Range (Heatley, Nation, & Coxhead, 2002) to create glossaries consisting of the low-frequency (less frequent than…

Language delay is a common developmental difficulty. Research indicates that it is influenced by environmental factors, particularly social deprivation, but that a parent's interaction protects children's language development against these factors. It is hypothesized that by supporting parents' interaction, language development may be facilitated.…

The present study adds to the computer-mediated communication (CMC) literature by exploring oral learner-to-learner interaction using Skype, a free and widely used Internet software program. In particular, this task-based study has a two-fold goal. Firstly, it explores possible differences between two modes of oral CMC (audio and video) and…

This paper addresses the issue of how we might be able to assess productive vocabulary size in second language learners. It discusses some previous attempts to develop measures of this sort, and argues that a fresh approach is needed in order to overcome some persistent problems that dog research in this area. The paper argues that there might be…

We explore the relationship between second language (L2) learners' vocabulary size, lexical text coverage that their vocabulary provides and their reading comprehension. We also conceptualize "adequate reading comprehension" and look for the lexical threshold for such reading in terms of coverage and vocabulary size. Vocabulary size was…

Although the Word Associates Format (WAF) is becoming more frequently used as a depth-of-knowledge measure, relatively little validation has been carried out on it. This report of two validation studies tackles various important WAF issues yet to be satisfactorily resolved. Study 1 conducted introspective interviews regarding students' WAF…

Major innovations are becoming available for research in language development and disorders. Among these innovations, recent tools allow naturalistic recording in children's homes and automated analysis to facilitate representative sampling. This study employed all-day recordings during the 2nd year of life in a child exposed to three languages,…