Certainly, here are some psychological facts specifically related to preschool-age kids (typically around 3 to 5 years old):

Rapid Brain Development: The preschool years are a time of significant brain growth and development. This period is critical for laying the foundation for cognitive, social, and emotional skills.

Egocentrism: Preschoolers often struggle with understanding that others have different perspectives. They might assume that everyone knows what they know or that their own thoughts are shared by others.

Symbolic Play: Preschoolers engage in symbolic play, where they use objects to represent something else. This type of play supports their cognitive development by fostering creativity and imagination.

Imagination and Fantasy: A vivid imagination is a hallmark of this age. Preschoolers might have imaginary friends, create elaborate stories, and engage in pretend play.

Concrete Thinking: While their imaginations are thriving, preschoolers often struggle with abstract or hypothetical thinking. They are more focused on concrete experiences and may have difficulty understanding abstract concepts.

Language Development: The preschool years are crucial for language development. Children at this age experience vocabulary spurts and become more proficient in constructing complex sentences.

Social Interaction: Preschoolers are learning to navigate social interactions and friendships. They begin to understand social norms, learn about sharing and cooperation, and develop basic empathy.

Emotional Expression: Young children are still learning to identify and express their emotions. They may have outbursts or tantrums when they're overwhelmed, and teaching them to recognize and manage emotions is important.

Motor Skills Development: Gross motor skills (like running and jumping) and fine motor skills (like drawing and using utensils) are rapidly improving during the preschool years.

Routines and Predictability: Preschoolers thrive on routines and predictability. Having a consistent schedule and clear expectations can help them feel secure and confident.

Magical Thinking: Preschoolers might engage in magical thinking, believing that their thoughts or actions can cause events to happen. This is a normal part of their cognitive development.

Fear and Anxiety: Children at this age might have fears of the dark, monsters, or being separated from caregivers. These fears are common and can often be managed through reassurance and support.

Early Morality: Preschoolers are beginning to develop a sense of right and wrong. They may have a strong desire to follow rules, and they're learning about fairness and sharing.

Attention Span: While attention spans are still relatively short, preschoolers can engage in focused activities for longer periods compared to their toddler years.

Preoperational Stage: According to Piaget's theory of cognitive development, preschoolers are in the preoperational stage. They're characterized by the use of symbols, egocentrism, and a lack of conservation (understanding that properties like volume remain the same even if the appearance changes).

Understanding these psychological facts can help parents, caregivers, and educators provide appropriate support and guidance to preschool-age children as they navigate this crucial stage of development.