Younger Preschoolers are beginning to enjoy playing with other children, especially pretending or involved in dramatic play. Their emotions are usually extreme and short-lived but are beginning to understand others' emotions. They are demonstrating a natural curiosity and are eager to learn. 

Since all children develop at their own pace, reaching milestones can vary at occur at different stages. If you have a concern about your child's development, have discussions with your pediatrician.