Children's language and cognitive development are informed by adult spoken language and parental literacy behaviors, although their relative contributions have not been evaluated. Using digital audio-recorders, we unobtrusively observed the spoken language of 107 children, aged 24 to 48 months (M = 32, SD = 6.5), and their families over 3 days (M…

This paper provides an overview of the features of caregiver input that facilitate language learning across early childhood. We discuss three dimensions of input quality: interactive, linguistic, and conceptual. All three types of input features have been shown to predict children's language learning, though perhaps through somewhat different…

Amid growing controversy about the oft-cited "30-million-word gap," this investigation uses language data from five American communities across the socioeconomic spectrum to test, for the first time, Hart and Risley's (1995) claim that poor children hear 30 million fewer words than their middle-class counterparts during the early years…

The Process Density Index (PDI), originally developed by Edwards, is a potentially useful metric for assessing phonological development that is based on the average number of phonological process applications per word in a speech sample. The purpose of the present study was to gather PDI reference data for Dutch-speaking children. Speech samples…

Approximately 10% of children with a speech sound disorder present with an inconsistent phonological disorder, characterized by inconsistent production of words across multiple trials. A number of studies have provided evidence of the efficacy of core vocabulary therapy for the remediation of this speech sound disorder with a dosage of two…

In this pilot study, we ask whether repeated storybook reading is also beneficial for word learning in children diagnosed with specific language impairment (SLI). We compared 3-year-old German learning children diagnosed with SLI to typically developing children matched on age and socioeconomic status (SES). One week later, children with SLI…

UK Sure Start Children's Centres (SSCCs) aim to lessen behavioural disorders yet we lack evidence concerning how this is achieved. This study evaluates one possible mechanism: improved home learning environments (HLEs). Data come from a longitudinal study of 2568 families and children recruited at a mean age of 14 months from 117 SSCCs in England…

Purpose: This study reports age 5 morphology and syntax skills in late talkers identified at age 2 (n = 34) and typically developing comparison children (n = 20). Results: The late talkers manifested significant morphological delays at ages 3 and 4 relative to comparison peers. Based on the 14 morphemes analyzed at age 5, the only significant…

Latino children are diagnosed with autism spectrum disorder later in life, usually with more severe symptoms, and lower IQs, compared with non-Latino children. Possible reasons for such disparities could be due to lower levels of parent education, lower socioeconomic status, limited knowledge of parents about autism spectrum disorder, and…

Research has previously shown a gap of near 0.5 of a standard deviation (SD) in cognition and language development between the top and bottom household wealth quartile in children aged 6-42 months in a large representative sample of low- and middle-income families in Bogota, using the Bayley Scales of Infant and Toddler Development. The gaps in…

As reading to children plays an important role in language development, primary caregivers are often encouraged to read to their children from a very young age. However, little is known about the age at which such reading should start. The linguistic skills of 104 children were assessed shortly before school entry. Their parents were asked how old…

Objective: This article aims to review the previously published literature on the social and environmental factors which influence children (aged 3-5 years) to be obese/overweight and the accuracy of parental perceptions. Obesity levels are on the increase in today's society and habits are being passed from parents to children, with family…

ZERO TO THREE, in partnership with the Bezos Family Foundation, conducted a comprehensive research effort, including a series of in-home discussions and a large national parent survey with a diverse range of parents of children from birth to 5. Our findings provide brand new insights about the challenges parents face, what they do and do not…

Background: Maternal responsiveness has been shown to predict child language outcomes in clinical samples of children with language delay and non-representative samples of typically developing children. An effective and timely measure of maternal responsiveness for use at the population level has not yet been established. Aims: To determine…

Previous studies have demonstrated that various psychosocial risks are associated with poor cognitive functioning in children, and these risks frequently cluster together. In the current longitudinal study, we tested a model in which it was hypothesized that cumulative psychosocial adversity of mothers would have deleterious effects on children's…