 For example, if their caregiver responded with anger when their older brother went to take a cookie, the infant is able to harness that information and is less likely to take a cookie themselves.At this age, social referencing also begins to support children's understanding of others, as children learn what others like and dislike based on the information gained from social referencing (e.g., facial expression).As such, if an adult reacts by smiling when given a ball but with anger when given a doll, an 18-month-old will choose to give that adult a ball, rather than a doll, regardless of their own preferences.