Infants begin to recognize people at 4-6 months, with individual differences. Infants begin to smile socially at 2-3 months of age, i.e., they give smiles to express their happiness when outsiders are smiling. However, smiles and other expressions at this time are not directed, meaning that the child is not “socially” connected to a particular person. By the time most infants reach 4-6 months of age, they begin to recognize specific people. At first, they give more attention and interaction to their mother. They smile more when they see their mom. At this time, the mother will clearly feel that she is “noticed” by the baby. Gradually, the baby will treat other people around her differently.