Examining emotion recognition and response to music can isolate recognition of and resonance with emotion from the confounding effects of other social cues (e.g., faces). In a within-sample design, participants aged 5-6 years in the eastern region of the United States (N = 135, M[subscript age] = 5.98, SD[subscript age] = 0.54; 78 female, 56 male;…

Evaluating evidence and restructuring beliefs based on anomalous evidence are fundamental aspects of scientific reasoning. These skills can be challenging for both children and adults, especially in domains where they possess inaccurate prior beliefs that can interfere with the acquisition of correct scientific information (e.g., heavier objects…

A foundational mechanism underlying human cooperation is reciprocity. In the context of repeated interactions with others, it is not always clear the degree to which in-kind responses reflect responsiveness to partners' prior behaviors ("reactive" responses), an interest unrelated to the partner ("nonreactive" responses), or…

Humans appear to intuitively grasp definitions foundational to formal geometry, like definitions that describe points as infinitely small and lines as infinitely long. Nevertheless, previous studies exploring human's intuitive natural geometry have consistently focused on geometric principles in planar Euclidean contexts and thus may not…

People who are in close relationships tend to do and like the same things, a phenomenon termed the "homophily principle." The present research probed for evidence of the homophily principle in 4- to 6-year-old children. Across two experiments, participants (N = 327; 166 girls, 161 boys; located in the Midwestern United States) were asked…

Gender-stereotyped beliefs develop early in childhood and are thought to increase with age based on prior research that was primarily carried out in Western cultures. Little research, however, has examined cross-cultural (in)consistencies in the developmental trajectory of gender-stereotyped beliefs. The present study examined implicit gender-toy…

Proactive interference (PI) occurs when previously learned memories compete with currently relevant information. Despite extensive literature investigating the effect in adults, little work has been done in young children. In three preregistered studies (N = 38, 35, 172; convenience samples from the Northeastern United States), first, we showed…

This study examined parental romantic attachment security as a mediator of prospective associations between hostile interparental conflict and parental discipline (i.e., power-assertive, permissive, and inductive discipline) for mothers and fathers of young children. Furthermore, this study utilized a novel, automatic assessment of romantic…

Children show less positivity toward gender-nonconforming (GN) than gender-conforming (GC) peers. Yet, little is known about children's reasoning about peers of varying gender expressions, including age-, gender-, and culture-related influences. We investigated how children aged 4- to 5- and 8- to 9-years-old in Hong Kong and Canada (N = 678)…

Gender and age are salient social categories from early in development. However, whether children's beliefs about gender and age intersect, such that gender stereotypes might be expressed differently when asked about children (compared to adults) has not been investigated. Here, in a preregistered study (N = 297), we examined if young children…

Adults use an individual's behavior in one moral subdomain to make inferences about how they will act in another moral subdomain, reflecting a tendency to attribute underlying traits to individuals. We recruited 4- to 7-year-old children from a large city in North America to investigate their ability to generalize from one moral subdomain to…

In pursuing goals, people seek favorable odds. We investigated whether young children use this fact to infer goals from people's actions across two experiments on Canadian 3- to 7-year-old children (N = 316; 167 girls, 149 boys). Participants' demographic information was not formally collected, but the region is predominantly middle-class and…

Prospective memory (PM) involves remembering to carry out intended actions in the future (e.g., posting a letter on the way to school or passing on a message) and is important for children's independent functioning in daily life. This study examined, for the first time, the effects of incidental reminder cues on children's PM. Five- and 7-year-old…

Gratitude is a positive social emotion that one experiences when one has benefited from another person's goodwill (McCullough, 2002). Feeling gratitude urges the grateful person to reciprocate and respond prosocially, thereby solidifying cooperation. Yet little prior research has focused on the social functions of displaying gratitude, namely to…

The goals of this study were to investigate (a) the dyadic relations of mothers' and children's perceptions of children's anxiety symptoms across development, (b) whether maternal perceptions of children's anxiety serve as a mediator of the association between maternal anxiety and child anxiety, and (c) whether sensitive/structured parenting…