To study effects of the gender-packaging of science, technology, engineering, and mathematics (STEM) toys, mother-child dyads (31 daughters; 30 sons; M = 5.2 years) were randomly assigned to play with a mechanical toy packaged for girls ("GoldieBlox") or boys ("BobbyBlox"). When familiarizing themselves with the toy to prepare…

This research takes a dyadic approach to study early word learning and focuses on toddlers' (N = 20, age: 17-23 months) "information seeking" and parents' "information providing" behaviors and the ways the two are coupled in real-time parent-child interactions. Using head-mounted eye tracking, this study provides the first…

Two independent cohorts (N = 155, N = 126) of infants at high and low risk for autism spectrum disorder (ASD) were followed prospectively between 6 and 36 months of age, when n = 46 were diagnosed with ASD. Gaze to adult faces was coded--during a developmental assessment (Cohort 1) or a play interaction (Cohort 2). Across both cohorts, most…

Few systematic studies of play in foragers exist despite their significance for understanding the breadth of contexts for human development and the ontogeny of cultural learning. Forager societies lack complex social hierarchies, avenues for prestige or wealth accumulation, and formal educational institutions, and thereby represent a contrast to…

The longitudinal association between competitive video game play and aggression among young adults and adolescents was examined. Young adults (N = 1,132; M[subscript age] = 19 years) were surveyed annually over 4 years about their video game play and aggression, and data from a 4-year longitudinal study of adolescents (N = 1,492; M[subscript…

Shape knowledge, a key aspect of school readiness, is part of early mathematical learning. Variations in how children are exposed to shapes may affect the pace of their learning and the nature of their shape knowledge. Building on evidence suggesting that child-centered, playful learning programs facilitate learning more than other methods, 4-to…

Head Start enhances school readiness during preschool, but effects diminish after children transition into kindergarten. Designed to promote sustained gains, the Research-based Developmentally Informed (REDI) Parent program (REDI-P) provided home visits before and after the kindergarten transition, giving parents evidence-based learning games,…

This study examined how societal changes associated with modernization are related to cognitive development. Data were from 4 cultural communities that represented a broad range of traditional and modern elements: the Garifuna (Belize), Logoli (Kenya), Newars (Nepal), and Samoans (American Samoa). Naturalistic observations and the performances of…

Child engagement in prekindergarten classrooms was examined using 2,751 children (mean age = 4.62) enrolled in public prekindergarten programs that were part of the Multi-State Study of Pre-Kindergarten and the State-Wide Early Education Programs Study. Latent class analysis was used to classify children into 4 profiles of classroom engagement:…

In line with theories that children's pretend play reflects and extends their narrative skills, children with imaginary companions were predicted to have better narrative skills than children without imaginary companions. Forty-eight 5 1/2-year-old children and their mothers participated in interviews about children's imaginary companions.…

Compared pretend play enactment, negotiation, internal state language, and sibling relationship quality in 40 kindergartners with older or younger siblings. Found that frequent pretend play dyads used more high-level negotiation and internal state language than infrequent pretend dyads. Friendly relationship quality was negatively related to…

Observed Anglo- and Korean-American preschoolers during free play and experimental toy play. Found that Korean-Americans' play included everyday activity and family role themes, whereas Anglo-Americans' play enacted danger and fantastic themes. Anglo-Americans described their own actions and used directives, whereas Korean Americans described…

Compared Korean American and Anglo-American preschoolers' social and play behavior to determine the influence of culture on early development and to understand how culture shapes and organizes the environment in which children's social and play activities take place. Suggests that children's social interaction and pretend play are influenced by…

This study used longitudinal data from five Irish American families and nine Chinese families in Taiwan, in conjunction with cultural psychology research evidence, to propose universal, culturally variable, and developmental dimensions of children's pretend play. Findings raise the theoretical issue of how universal and variable dimensions of…

Compared exploratory, symbolic, and social play and interaction of Argentine and U.S. 20-month olds and their mothers. Found patterns of cultural similarity in sex differences and differences in the use of exploratory and symbolic play. Overall, Argentine and U.S. dyads used different modes of exploration, representation, and interaction,…