Spontaneous imaginary companion (SIC) creation in childhood is a typical imaginative play behaviour associated with advanced sociocognitive skills; however, the direction of causality has not been established. To investigate this experimentally, researchers must determine whether children can create, on request, qualitatively equivalent imaginary…

Play is an essential component of childhood, but parents and educators sometimes view it as an optional add-on, which gets in the way of learning. This view persists in spite of evidence that play is helpful and sometimes critical to learning in multiple domains, perhaps because precise mechanisms whereby play occasions learning are not well…

References to internal states (e.g., thoughts, feelings, and desires) indicate children's appreciation of people's inner worlds. Many children spend time playing video games; however, the nature of children's speech when doing so has received little attention. We investigated the use of internal state language (ISL) as 251 seven-year-olds played…

During the COVID-19 pandemic, kindergartens in Hong Kong have sought ways in which to support children's learning at home while schools were closed. We report on a proof-of-concept study: short videos intended to support playful learning at home were distributed to parents/caregivers of preschool children via a smartphone app; toys and a storybook…

Preterm birth is associated with reduced social attention in infancy. Are these early social attention differences linked to later interactive ability? This study draws on a well-characterized preterm cohort in whom we have previously demonstrated a reduced attentional preference for social information in infancy, using eye-tracking. States of…

Children's mathematical knowledge at school entry varies considerably and predicts long-term achievement outcomes. Differences in children's exposure to math and number talk at home may help to explain variations in school-entry math ability. However, nearly all research on exposure to math and number talk has been conducted with parents and…

Object word learning can be based on infant-related factors such as their manual actions and socio-linguistic factors such as parental input. Specific input for spatial features (i.e., size, shape, features of objects) can be related to object word comprehension in early vocabulary development. In a longitudinal study, we investigated whether fine…

Background: Contextual factors are likely to influence whether young children are able to adhere to recommended health behaviours. This study aimed to: (1) describe the social and environmental characteristics of children under five living in Soweto, South Africa; and (2) determine factors associated with screen time and outdoor play in this…