As adults, we might understand that beliefs often spread because people are strongly influenced by their friends, family, and other social connections. However, do we think those influences are strong enough to overrule direct evidence of a friend's unreliability? And do preschoolers expect people to show such biases toward friends and to…

Children are developing alongside interactive technologies that can move, talk, and act like agents, but it is unclear if children's beliefs about the agency of these household technologies are similar to their beliefs about advanced, humanoid robots used in lab research. This study investigated 4-11-year-old children's (N = 127, M[subscript age]…

We examine the long-standing claim that understanding relational correspondence is a general component of representational understanding. Two experiments with 175 preschool children located in Norwich, United Kingdom, examined the use of a scale model comparing performances on a "copy" task, measuring abstract spatial arrangement…

Children's beliefs about the contribution of effort and ability to success and failure shape their decisions to persist or give up on challenging tasks, with consequences for their academic success. But how do children learn about the concept of "challenge"? Prior work has shown that parents' verbal responses to success and failure shape…

The COVID-19 pandemic has forced children to reckon with the causal relations underlying disease transmission. What are children's theories of how COVID-19 is transmitted? And how do they understand the relation between COVID-19 susceptibility and the need for disease-mitigating behavior? We asked these questions in the context of children's…

Although the influence of intent understanding on children's moral development has been long studied, little research has examined the influence of belief understanding on that development. In two studies we presented children with morally relevant belief vignettes to examine the extent to which they incorporate both intent and belief information…

Currently, despite the rapid growth of the population of Chinese immigrant families and children in the United States, preschool-aged Chinese-heritage children are an underrepresented group in research. The overarching purpose of this project was to provide a deeper understanding of Head Start Chinese immigrant parents' beliefs about children's…

Children's socioeconomic status (SES) is linked to disparate access to resources and affects social behaviors such as inclusion and resource allocations. Yet it is unclear whether children's essentialized view of SES (i.e., believing SES is immutable) or subjective social status (SSS) influences behavioral biases toward high- versus low-SES peers.…

Language that uses noun labels and generic descriptions to discuss people who do science (e.g., "Let's be scientists! Scientists discover new things") signals to children that "scientists" is a distinctive category. This identity-focused language promotes essentialist beliefs and leads to disengagement from science among young…

High achievers vary in terms of the constraints and difficulties they encounter on the road to success. The present study investigates whether and how children consider the constraints one overcomes in their beliefs and reasoning about academic achievement. Four- to nine-year-olds (N = 98, 57 girls, 41 boys) and their parents (N = 92, 80 females,…

Two studies examined the process and aftermath of coming to disbelieve in the myth of Santa Claus. In Study 1, 48 children ages 6-15 answered questions about how they discovered Santa was not real and how the discovery made them feel, and 44 of their parents shared their perspectives and how they promoted Santa. In Study 2, 383 adults reflected on…

To examine whether children's acquisition of perspective-marking language supports development in their ability to reason about mental states, we conducted a longitudinal study testing whether proficiency with complement clauses around age 3 explained variance in false-belief reasoning 6 months later. Forty-five English-speaking 2- and 3-year-olds…

This study examined how children's and adolescents' beliefs about the distribution of wealth in society and the fairness of economic systems informed their behavior, judgments, and reasoning about access to opportunities among peers. The sample included 136 8- to 14-year-olds (47% girls, 60% White, majority middle- to higher-socioeconomic status…

A growing body of literature shows that adherence to some aspects of Western masculinity norms, including the suppression of emotional vulnerability, avoidance of seeking support from others, and exaggerated physical toughness, is associated with poorer psychological and social outcomes. While existing research suggests that parental gender…

In Study 1, 103 children ages 4 through 10 answered questions about their concept of and belief in luck, and completed a story task assessing their use of luck as an explanation for events. The interview captured a curvilinear trajectory of children's belief in luck from tentative belief at age 4 to full belief at age 6, weakening belief at age 8,…