Research Findings: Using a nationally representative sample of Head Start recipients, this study compared Head Start classroom contexts and English language and literacy skill trajectories for Spanish-speaking dual-language learners (DLLs) and English speakers from preschool through kindergarten. It also examined whether Head Start classroom…

This study is a randomized control trial of full- versus half-day prekindergarten (pre-K) in a school district near Denver, Colorado. Four-year-old children were randomly assigned an offer of half-day (4 days/week) or full-day (5 days/week) pre-K that increased class time by 600 hours. The full-day pre-K offer produced substantial, positive…

Children in early childhood education and care (ECEC) spend a considerable amount of time interacting with their peers. However, open questions remain on whether and how children influence their peers' language development. The present study examined effects of peers' German receptive vocabulary (n = 1,871) on individual children's (n = 431)…

Purpose: Derivational morphology and compounds are important aspects of academic vocabulary. However, investigation of the development of expressive derivational and compound morphology using language sampling is sparse. This cross-sectional study used three types of language samples to investigate quantitative and qualitative changes in the…

Previous research shows that Early Childhood Education (ECE) positively impacts cognitive outcomes later in life. Few studies examine the impacts of ECE in developing countries. We use data from the Young Lives project in Vietnam with 2SLS regressions to estimate the impact of years spent in ECE on cognitive outcomes in adolescence. We find that…

Based on a theoretical model of instructional quality this study investigates the influence of different dimensions of instructional quality in the school entrance phase on students' language development taking into account child and family background factors as well as structural characteristics of the classroom and teacher's educational beliefs.…

This research examines the influence of educator and child expectations on children's self-regulation, early reading, and vocabulary outcomes over two time points. Thirty educators (15 early childhood educators [ECEs] and 15 teachers) and 149 kindergarten children participated in the research. The educators participated in an expectation ranking…

This research analyzes data collected by the Young Lives project on childhood poverty. It addresses the effect of socio-demographic, individual, and linguistic variables -- focusing on the latter -- on reading comprehension in Spanish by 502 Peruvian Quechua-Spanish bilingual children aged 8 years. The regression model tested explained 46% of the…

Purpose: The aims of the study were to explore responses of children with developmental language disorder (DLD) to rich vocabulary instruction and to identify potential factors that contribute to outcomes. Method: Children with DLD participated in a language intervention embedded within a science camp. Using parent and clinician reports,…

We examined independent and interactive links among three central characteristics of children's experiences in early childhood education and care and the German receptive vocabulary of single language learners and dual language learners (DLLs). We allowed for possible differential effects depending on children's language background. Our sample…

Head Start is the largest publicly funded preschool program in the U.S., and one of its primary goals is to improve the school readiness of low-income children. As has been widely reported, the first randomized trial of Head Start in the program's history found some evidence that it is achieving this goal. Receiving one year of Head Start had…

Parental engagement in home-based learning activities is linked to children's academic skills. Yet, interventions that try to enhance parental engagement--sometimes targeted to families with low levels of education--have small effects. This study aimed to inform supports for families by examining how different types of home-based learning…

Research Findings: Emotion knowledge (EK) enables children to identify emotions in themselves and others, and its development facilitates emotion recognition in complex social situations. Sociocognitive processes, such as theory of mind (ToM), may contribute to developing EK by helping children realize the inherent variability associated with…

In the 1998 reauthorization of Head Start, Congress mandated that the US Department of Health and Human Services (DHHS) determine, on a national level, the impact of Head Start on the children it serves. As noted by the Advisory Committee on Head Start Research, this legislative mandate required that the impact study address two main research…

By tracking longitudinally a sample of American children (n = 1,097), this study examined the extent to which enrollment in private schools between kindergarten and ninth grade was related to students' academic, social, psychological, and attainment outcomes at age 15. Results from this investigation revealed that in unadjusted models, children…