Purpose: The study objective was to determine if the validated Behavioral Inflexibility Scale (BIS) is sensitive to the detection of developmental changes in inflexibility in a sample of autistic children. Methods: Parents of autistic children (n = 146, 3-17 years) completed the BIS at two time points, one year apart, to examine change. Results:…

Interoception refers to the processing of internal bodily states and plays a critical role in motivational processes and behaviours. Instruments for assessing its subjective components (i.e., interoceptive sensibility) during childhood are crucially needed. Thus, in this study, we adapted and evaluated the psychometric properties of the…

Disparities in socioeconomic status (SES) may affect individuals' risk preferences, which have important developmental consequences across the lifespan. Yet, previous research has shown inconsistent associations between SES and risky decision-making, and little is known about how this link develops from a young age. The current research is among…

The present study investigated whether distinct developmental patterns of externalizing behaviors (EBs: hyperactivity-impulsivity, noncompliance, physical aggression) based on parent reports were repeatedly and differentially associated with separate dimensions of internalizing problems such as general anxiety, separation anxiety, and depressive…

This study explored child behaviours that enable mothers to perceive their child's minds. We administered the Mind Perception Questionnaire to 216 women with children aged between 0 and 24 months and 221 working women without children. Participants responded with mind perceptions for various entities, including for their children (a 0--2-year-old…

Play during childhood is essential to growth and learning. Little is known about whether categories of toys moderate play behaviors at different ages, or how children interact with toys that are simple, appropriate, or complex for their developmental level. Two hundred and forty-three children between the ages of 1 and 8 years, divided into four…

Infancy is a period of significant change for both the brain and behavior. During the first two years of life, the brain experiences an explosion of synaptic connections and myelination, alongside rapid development in motor, linguistic, and social behavioral abilities. Understanding the relationship between brain development and behavioral…

In this article, we integrate cultural evolutionary theory with empirical research from developmental psychology, cultural anthropology, and primatology to explore the role of peer learning in the development of complex instrumental skills and behavioral norms. We show that instrumental imitation, contingent teaching, generative collaboration, and…

In this article, I discuss major theoretical and methodological issues in the study of cultural meanings of children's behaviors. Research in this area is conducted mainly through assessing individual beliefs using hypothetical vignettes or other self-report methods. I argue that it is important to investigate functional meanings of children's…

Purpose: Tracking of infants' progression through early vocal stages supports the identification of children at risk for language delays and guides early intervention for children with disabilities. However, few clinical tools are available to support systematic assessment of infants' early vocal development. This study sought to develop and…

The aim of the present study was to explore how maternal reminiscing relates to socioemotional development during middle childhood. Specifically, analyses explored the link between maternal reminiscing and children's internalizing (emotional problems and peer problems), externalizing (hyperactivity and conduct problems) and prosocial behavior…

Spatial play in early childhood is associated with a variety of spatial and cognitive skills. However, these associations are often derived from studies in which different tasks are used across different age ranges, leaving open the question of how children's natural behaviors during spatial play develop from infancy into the early preschool…

The results of studies on early competences suggest that the child's delay of gratification (DoG) ability is a major predictor of school readiness (SR). However, there are no direct data or convincing explanations as to how DoG translates into preschool children's readiness to commence school education. Aiming at a better understanding of the…

Fine motor skills develop in childhood. In this study, we evaluate motor planning in 6- to 11-year-old children using a pegboard and midline crossing task. The results of the pegboard task showed that children modified their strategies of hand use and space use as a function of age, albeit with a transition in the 8- to 9-year-old children. The…

This study is an extension of an experiment where the reliability of children's environment was manipulated before children completed the Marshmallow Task (Cognition, 2013, Vol. 126, pp. 109-114). In that experiment, Kidd, Palmeri, and Aslin found a significant difference in waiting time between two conditions in which the experimenter…