Pretend play is an important, universal activity of early childhood, but research to date contains multiple inconsistencies in definitions and measurement of pretend play. To begin to resolve this issue, we conducted a first study of the multiple different behaviors of pretend play in the preschool years (3-5 years), and investigated their…

We aimed to longitudinally examine how symbolic distancing affects preschool children's delay tolerance in a delay choice task. We presented children with choices between a smaller immediate reward and a larger delayed reward in conditions with either symbolic stimuli or edible rewards. Overall, symbolic distancing modulated children's delay…

Remembering the temporal information associated with personal past events is critical for autobiographical memory, yet we know relatively little about the development of this capacity. In the present research, we investigated temporal memory for naturally occurring personal events in 4-, 6-, and 8-year-old children. Parents recorded unique events…

Research to date has focused mostly on children's representation of their physical self as a prelude to the development of a theory of mind (ToM) and on their understanding of the self as distinct from others over time. Whether children approaching the well-known age of ToM mastery are also accurately appraising their own "body's"…

Children aged 3 to 8 years old and adults were tested on a reality–fantasy distinction task. They had to judge whether particular entities were real or fantastical, and response times were collected. We further manipulated whether the entity is a specific character or a generic fantastical entity. The results indicate that children, unlike adults,…

There is currently debate about the emergence of children's ability to reason about artifacts by reference to their intended design. We present two studies demonstrating that, while 3-year-olds have emerging insights, 4-year-old children display an explicit, well-rounded, adult-like understanding of the way design constrains an artifact's physical…

Object use is a ubiquitous characteristic of the human species, and learning how objects function is a fundamental part of development. In this article the authors examine the role that intentionality plays in children's understanding of causal relationships during observational learning of object use. Children observed demonstrations in which…

Seventy-nine 3- and 4-year-old children were tested on gaze-reporting ability and Wellman and Liu's (2004) continuous measure of theory of mind (ToM). Children were better able to report where someone was looking when eye and head direction were provided as a cue compared with when only eye direction cues were provided. With the exception of…

Previous research suggests that 3-year-olds fail to learn from statistical data when their prior beliefs conflict with evidence. Are children's beliefs entrenched in their folk theories, or can preschoolers rationally update their beliefs? Motivated by a Bayesian account, we conducted a training study to investigate this question. Children (45…

Do children think that adult knowledge subsumes or only partially overlaps child knowledge? Sixty-four 4- and 6-year-old children were asked either whether a child and an adult know the answers to questions tapping adult- and child-specific knowledge (Experiment 1) or to whom each question should be addressed (Experiment 2). Children were also…

How do children use questions as tools to acquire new knowledge? The current experiment examined preschool children's ability to direct questions to appropriate sources to acquire knowledge. Fifty preschoolers engaged in a task that entailed asking questions to discover which special key would open a box that contained a prize. Children solved…

Executive functions play an important role in cognitive development, and during the preschool years especially, children's performance is limited in tasks that demand flexibility in their behavior. We asked whether preschoolers would exhibit limitations when they are required to apply a general rule in the context of novel stimuli on every trial…

This study examined the development of the episodic and semantic memory systems, with an emphasis on the emergence of the two aspects of the former: episodic memory (the ability to re-experience a past event) and episodic future thinking (the ability to pre-experience a future event). Three-, 4-, and 5-year olds were randomly assigned to one of…

This study focuses on the development of face recognition in typically developing preschool- and school-aged children (aged 5 to 15 years old, "n" = 611, 336 girls). Social predictors include sex differences and own-sex bias. At younger ages, the development of face recognition was rapid and became more gradual as the age increased up…

Two studies used a new paradigm to examine preschool children's (i.e., 2-, 3-, 4-, and 5-year-olds) word learning across multiple sense modalities. In Study 1 (n = 60), children heard a word for an object that they touched but did not see, while word learning was examined using objects that were seen but not touched. In Study 2 (n = 60), children…