This study investigated the effect of the digital Down Syndrome LanguagePlus (DSL+) intervention on vocabulary outcomes through a school-delivered randomized controlled trial. A national sample of first graders with Down syndrome from 91 schools was allocated to an intervention group (n = 50), which received daily intervention for 15 weeks, or a…

In this randomized trial study, the authors examined the efficacy of a practitioner partnership language intervention addressing oral language learning (expressive and receptive) in young language-minority learners from multiple-language groups in Norway. Resource teachers in 16 elementary schools implemented the intervention in the first and…

A body of studies, which are mostly based on parental reports, have documented gender differences in early language proficiency, and girls tend to outperform boys in both language production and language comprehension. In this study, staff in Norwegian Early Childhood Education and Care institutions observed language comprehension, word…

Second-language learners display poorer general language skills in the language used at school than their monolingual peers, which is a concern because general language skills (vocabulary, grammar, language expression, and comprehension) provide the foundation for later academic success. In a randomized controlled trial, we examined the efficacy…

Narratives require the integration of many different linguistic skills and can be used as an ecologically valid measure of child language development. This study investigated the narrative skills of 18 six- to seven-year-old prelingually deaf children who received simultaneous bilateral cochlear implants (CI) between 5 and 18 months of age. No…

Genetic and environmental relations between vocabulary and reading skills were explored longitudinally from preschool through Grades 2 and 4. At preschool there were strong shared-environment and weak genetic influences on both vocabulary and print knowledge but substantial differences in their source. Separation of etiology for vocabulary and…