By about age 3, your preschooler will start becoming a social creature. Playmates will become friends, siblings will become accomplices or foes, and caregivers will become confidants and discussion partners. During this period, it's a good idea to keep an eye on the ways your child is developing social skills.
Take your child to the playground, park or to classes at a local community center. By being around other kids her age, your preschooler will be able to hash out most of the ground rules for social interaction, such as sharing and taking turns.
Of course, groups of preschoolers can also be cruel, aggressive and rude -- transforming any playground into a cauldron of emotional drama. After a significant amount of time spent around her peers, you may notice your preschooler starting to develop behavioral problems [source: Dewar: Stress]. That's why it's good to make sure that your child also interacts with emotionally mature adults, instead of just her peers. Point out emotions in other people, explain the causes and effects of emotions, and teach your preschooler to communicate her feelings in a healthy way [source: Dewar: Social Skills].