This longitudinal study involving 101 Dutch four- and five-year-olds charts indirect request (IR) and mental state term (MST) understanding and investigates the role that Theory of Mind (ToM) and general linguistic ability (vocabulary, syntax, and spatial language) play in this development. The results showed basic understanding of IR and MST in…

There are three hallmarks of core linguistic properties. First, they are expected to be manifested in typologically different languages. Second, they should unify superficially unrelated linguistic phenomena. Third, they are expected to emerge early in the course of language development, all things being equal (Crain, 1991). The present study…

Children are frequently confronted with so-called "test questions". While genuine questions are requests for missing information, test questions ask for information obviously already known to the questioner. In this study we explored whether two-year-old children respond differentially to one and the same question used as either a genuine question…

Learning new words involves decoding both how a word fits the current situation and how it could be used in new situations. Three studies explore how two types of cues--sentence structure and the availability of multiple instances--affect children's extensions of nouns and verbs. In each study, 2.5-year-olds heard nouns, verbs, or no new word…

Purpose: The prelinguistic infant's babbling repertoire of "syllables"--the phonological categories that form the basis for early word learning--is noticed by caregivers who interact with infants around them. Prior research on babbling has not explored the caregiver's role in recognition of early vocal categories as foundations for word learning.…

Canonical babbling is a critical milestone for speech development and is usually well in place by 10 months. The possibility that infants with autism spectrum disorder (ASD) show late onset of canonical babbling has so far eluded evaluation. Rate of vocalization or "volubility" has also been suggested as possibly aberrant in infants with…

Purpose: This study examined the vocabulary words and multiword sequences used by 124 typically developing kindergarten and 1st-grade students when they wrote about self-selected topics. The study extends previous research by examining the vocabulary used in different genres. Method: A total of 457 writing samples were analyzed. The samples were…

This study reports on language outcomes at eight years from the Bucharest Early Intervention Project, a randomized controlled study of foster care. We previously have shown that children placed in foster care by age two have substantially stronger preschool language outcomes than children placed later and children remaining in institutional care.…

Does child-directed language differ from adult-directed language in ways that might facilitate word learning? Associative structure (the probability that a word appears with its free associates), contextual diversity, word repetitions and frequency were compared longitudinally across six language corpora, with four corpora of language directed at…

Acquiring useful language by age 5 has been identified as a strong predictor of positive outcomes in individuals with Autism Spectrum Disorders (ASD). This study examined the relationship between age of language acquisition and later functioning in children with ASD (n = 119). First word acquisition at a range of ages was probed for its…

When learning their first language, children develop strategies for assigning semantic roles to sentence structures, depending on morphosyntactic cues such as case and word order. Traditionally, comprehension experiments have presented transitive clauses in isolation, and cross-linguistically children have been found to misinterpret object-first…

The purpose of this addendum is to include within our discussion the findings of Girolametto et al. (2007), a randomized controlled trial of Teacher Talk training, an adapted version of Learning Language and Loving It (LLLI) (Weitzman and Greenberg, 2002). Teacher Talk does not include the coaching and video feedback elements of LLLI. Girolametto…

This study explores the widely documented difficulty children have with object clitics in the acquisition of Romance languages. It reports on two experiments: a production task and a comprehension task. Results from the elicitation task confirm that object omission occurs at nonnegligible rates in 2- and 3-year-olds. Findings from the…

Research Findings: This study investigated the association between Mexican American maternal education and socioeconomic status (SES) and child vocabulary as mediated by parental reading beliefs, home literacy environment (HLE), and parent-child shared reading frequency. As part of a larger study, maternal reports of education level, SES, HLE, and…

In this study, we investigated how multiple types of knowledge and beliefs, along with holding an early childhood-related degree and teaching experience were linked to amounts of early childhood educators' language and literacy instruction. Quantile regression was used to estimate associations between these variables along a continuum of language…