Research suggests that elements of the family environment may have significant associations with cognitive and language development outcomes. Less is known, however, about the family environment in peri-urban China, where rates of cognitive and language delay in children aged 0-3 years are as high as 51% and 54%, respectively. Using data collected…

The current study examines teachers' differential emotion socialization practices with girls and boys by observing the emotion language of 27 teachers in naturally-occurring classroom interactions with 112 toddlers. This study explores the valence of teachers' emotion language, the type of teachers' emotion language, and the relation between…

Communication is best understood as occurring along three dimensions: interactional, conceptual, and linguistic. However, few studies have examined early parent-child communication along all three dimensions simultaneously. This study examines these three dimensions of communication in Norwegian parent-child interactions during play. Thirty-nine…

This study aims to disentangle the often-confounded effects of input frequency and morphophonological complexity in the acquisition of inflection, by focusing on simple and complex verb forms in Japanese. Study 1 tested 28 children aged 3;3-4;3 on stative (complex) and simple past forms, and Study 2 tested 30 children aged 3;5-5;3 on completive…

Vocabulary input frequency influences age of acquisition, and is also an essential control for investigating the influence of other factors. We propose a new method of frequency estimation, self-report. 918 Danish-speaking parents of 12-36-month-old children estimated their frequency of use of 725 words. Self-report was substantially correlated…

Teachers in toddler classrooms are important agents of emotion socialization. The current study examined teachers' use of emotion minimizing language in toddler classrooms and toddlers' social emotional competence. Teachers' emotion minimizing language is described as language that purposefully distances them from a child's emotions and…

Previous research indicates that features of speech during mother-toddler interactions are dependent on the situational context. In this study, we explored language samples of 69 mother-toddler dyads collected during standardized toy play and book-reading situations across two countries, Germany and the United States (US). The results showed that…

This study examined the quantity and quality of parental linguistic input to toddlers with moderate hearing loss (MHL) compared with toddlers with normal hearing (NH). The linguistic input to eighteen toddlers with MHL and twenty-four toddlers with NH was examined during a 10-minute free-play activity in their home environment. Results showed that…

Although the phenotypic correlation between language and nonverbal cognitive ability is well-documented, studies examining the etiology of the covariance between these abilities are scant, particularly in very young children. The goal of this study was to address this gap in the literature by examining the genetic and environmental links between…

The syntactic structure of sentences in which a new word appears may provide listeners with cues to that new word's form class. In English, for example, a noun tends to follow a determiner ("a"/"an"/"the"), while a verb precedes the morphological inflection [ing]. The presence of these markers may assist children in…

The goal of the current study was to statistically evaluate the reliable scalability of a set of tasks designed to assess Theory of Mind (ToM) without language as a confounding variable. This tool might be useful to study ToM in populations where language is impaired or to study links between language and ToM. Low verbal versions of the ToM tasks…

This cross-sectional study investigated the use of four verbal indices of social knowledge (personal pronouns, verb conjugations, people words and mental state language) and their concurrent relations in a sample of 287 Italian-speaking children between 18 and 36 months. Results showed that the production of all indices increased with age. Mental…

The expressive lexical skills of 53 Polish bilinguals aged 24-36 months living in the UK and Ireland were assessed using Polish and British English adaptations of the MacArthur-Bates Communicative Development Inventories. Polish vocabulary scores were compared to those of 53 Polish monolinguals matched for age, gender and parental education. The…

This study examined differences in classroom quality, assessed by the Infant/Toddler Environment Rating Scale-Revised (ITERS-R), in 287 infant and 479 toddler classrooms. Classroom quality was compared across classroom age group (infant compared to toddler classrooms) as well as across programme type (for-profit compared to not-for-profit…

Lexical development in first language (L1) Turkish and second language (L2) German in two- to three-year-old children was examined, using parental vocabulary checklists in Turkish and in German. Children showed strong Turkish dominance in the number of lexical items they produced, which was due to the more frequent exposure to Turkish and higher…