Research Findings: This longitudinal study investigated the Spanish vocabulary development of dual-language-learning (DLL) children (N = 150) from Spanish-speaking, low-income, predominantly immigrant homes who were enrolled in a state-funded preschool program that provided instruction in Spanish. Children's Spanish vocabulary trajectories were…

Research Findings: Mental state verbs (MSV), a component of literate and academic language, may facilitate vocabulary growth, as they relate to metacognitive and metalinguistic awareness as well as decontextualized talk, all of which have been associated with vocabulary growth. In this study, we examined teacher MSV use in group content…

This article presents evidence for a validity argument on the ACTFL Assessment of Performance Toward Proficiency in Languages (AAPPL) tests (Interpersonal Listening/Speaking, Presentational Writing, Interpretive Listening, and Interpretive Reading) by summarizing an analysis of the 2014 test data from examinations administered in three languages…

By means of a large-scale web-based investigation, we established the degree of mutual intelligibility of 16 closely related spoken languages within the Germanic, Slavic and Romance language families in Europe. We first present the results of a selection of 1833 listeners representing the mutual intelligibility between young, educated Europeans…

The purpose of the present study was to examine associations among English and Spanish emergent literacy skills of prekindergarten (pre-K) Spanish-speaking dual language learners in relation to their English invented spelling. Study participants included 141 Spanish-speaking 4-year-old children enrolled in state-funded pre-K programs in a large…

This article reports a meta-analysis of 42 experiments in 33 published studies involving processing instruction (PI) and production-based instruction (PB) used in the PI studies. The comparative effectiveness of PI and PB showed that although PI was more effective than PB for developing receptive knowledge, PB was just as effective as PI for…

This study is an attempt to clarify the incremental and multidimensional nature of foreign language vocabulary development and its relation to the participants' reading and writing performances and general language ability of English as a foreign language (EFL). With this principle aim, the current study investigated the relationship between…

Background: Individuals with Williams syndrome (WS) show a disharmonic linguistic profile with a clear pattern of strengths and weaknesses. Despite their sociable nature, atypical socio-communicative abilities and deficits in communication and relationship with others have been found. Aim: The aim of the present study was to investigate whether…

A hallmark of Autism spectrum disorder (ASD) is difficulties with social communication, and some learners with ASD experience additional deficits in expressive and/or receptive language that impair their ability to interact with others. However, a strength observed in many learners with ASD is responding to visual cues and structure. The use of…

This study investigated first (L1) and second (L2) language acquisition in two age-matched groups of 2- to 6-year-old kindergarten children over the course of 2.5 years. The immersion group participated in a partial English immersion program whereas the conventional instruction group received a conventional L2 course (30 minutes per week); the…

The purpose of this study was to examine verbal fluency and verbal short-term memory in 12 adults with Down syndrome (DS) and 12 adults with Intellectual Disability (ID) of unspecified origin, matched for receptive vocabulary and chronological age. Participants' performance was assessed on two conditions of a verbal fluency test, namely, semantic…

The current study compared adaptive and cognitive skills, and autism severity of toddlers with an autism spectrum disorder (ASD) diagnosis under DSM-IV but not DSM-5 criteria (DSM-IV only group) to those who met autism criteria under both diagnostic systems (DSM-5 group) and to those without ASD (non-ASD group). The toddlers in the DSM-IV only…

Using multi-level growth modeling, we examined the effect of several measures of maternal input on growth in children's word types from 15-54 months. Mothers and children engaged in a picture description task (N = 77) at 15, 24, 33, and 54 months; the frequency of children's observed word types at each wave was coded and additional independent…

This study investigated the long-term effect of classroom-based input manipulation on children's use of subordination in a story re-telling task; it also explored the role of receptive vocabulary skills and expressive grammatical abilities in predicting the likelihood of priming. During a two-week priming phase, 47 monolingual English-speaking…

This study investigated the classification accuracy of the "Dynamic Indicators of Vocabulary Skills" (DIVS) as a preschool vocabulary screening measure. With a sample of 240 preschoolers, fall and winter DIVS scores were used to predict year-end vocabulary risk using the 25th percentile on the "Peabody Picture Vocabulary Test--Third…