Children tend to produce words earlier when they are connected to a variety of other words along the phonological and semantic dimensions. Though these semantic and phonological connectivity effects have been extensively documented, little is known about their underlying developmental mechanism. One possibility is that learning is driven by…

A meta-analysis of group studies and single-case design studies was conducted to examine the effectiveness of vocabulary instruction on vocabulary learning and reading comprehension for English Learners. Overall estimates indicate that vocabulary instruction promoted vocabulary learning and reading comprehension. The mean effect for vocabulary…

Background: A growing body of work shows that children with developmental language disorder (DLD) perform poorly on statistical word learning (SWL) tasks, consistent with the predictions of the Procedural Deficit Hypothesis that predicts that procedural memory is impaired in DLD. To date, however, SWL performance has not been compared across…

We examined effects of a 12-week, teacher-delivered, morphology-infused vocabulary intervention on writing outcomes for 4th and 5th grade U.S. students. The intervention (1) drew attention to the morphological structure of 40 Tier 2 words drawn from the Academic Word List, (2) taught morphologically related forms of those words, and (3) provided…

Iconic words imitate their meanings. Previous work has demonstrated that iconic words are more common in infants' early speech, and in adults' child-directed speech (e.g., Perry et al., 2015; 2018). This is consistent with the proposal that iconicity provides a benefit to word learning. Here we explored iconicity in four diverse language…

Retrieval practice of isolated words (e.g., with flashcards) enhances foreign vocabulary learning. However, vocabulary is often encountered in context. We investigated whether retrieval opportunities also enhance contextualized word learning. In two within-subjects experiments, participants encoded 24 foreign words and then read a story to further…

While there is a strong research base that supports intervening early in mathematics, research investigating the importance of mathematics vocabulary is still emerging. Practitioners and researchers may benefit from understanding how mathematics interventions support mathematics vocabulary acquisition, particularly for students who struggle with…

It remains unclear whether pragmatic language skills and core language skills (grammar and vocabulary) are distinct language domains. The present work aimed to tease apart these domains using a novel online assessment battery administered to almost 400 children aged 7 to 13 years. Confirmatory factor analysis indicated that pragmatic and core…

This study examined the associations of vocabulary and phonological and orthographic awareness with Hangul word reading in Korean children, aged between 7 and 10 years, who were deaf and hard of hearing (DHH) and children with typical hearing (TH). The participants were 24 children with hearing aids (HAs), 24 children with cochlear implants (CIs),…

The purpose of this study is to examine the effectiveness of cumulative repeated storybook reading (CRSR) on word production in children with developmental disabilities (DD). Three children with DD whose ages ranged from 3 years 9 months to 6 years took part in the study, which utilised a multiple-probe across subjects design. Storybook reading…

To better understand the developmental trajectory of children's pragmatic development, studies that examine more than one type of implicature as well as associated linguistic and cognitive factors are required. We investigated three- to five-year-old English-speaking children's (N = 71) performance in ad hoc quantity, scalar quantity and relevance…

To efficiently learn new words, children use constraints such as mutual exclusivity (ME) to narrow the search for potential referents. The current study investigated the use of ME in toddlers with autism spectrum disorder (ASD) and neurotypical (NT) peers matched on nonverbal cognition. Thirty-two toddlers with ASD and 26 NT toddlers participated…

The multidimensional conceptualization of vocabulary knowledge has been extraordinarily influential in lexical research. Yet, the few studies that have empirically explored the structure of word knowledge conflict regarding its multidimensionality. The present study examines the nature of L2 vocabulary knowledge by exploring how the hypothesized…

Topics presented in content area courses at the secondary level are often comprised of specialized and/or multiple-meaning vocabulary terms that can challenge students' understanding. Additionally, gaps in relevant knowledge from prior learning experiences in earlier grade levels may further impede comprehension of content area concepts. This is…

Although several studies have focused on novel word learning and lexicalization in (presumably) monolingual speakers, less is known about how bilinguals add novel words to their mental lexicon. In this study we trained 33 English-French bilinguals on novel word-forms that were neighbors to English words with no existing neighbors. The number of…