Children who talk more often, their expressive language skills are very high. Talk yourself often done by children in order to guide themselves while in school and while playing.
Vygotsky, a Russian psychologist, discovered the role of cognitive development in speech activity itself. In his view, talking alone allows the child to consciously direct his thinking process. This period is a transition from the initial social stages of speech and speaks to the heart toward the ability to exercise internal control over behavior. According to him, the habit of talking children themselves usually disappear by itself at the beginning of school age.
Vygotsky did not see the habits of children talking themselves as an egocentric. His opinion is supported by findings from a study showing that 86% of 93 children aged 3-5 years are known not egocentric. Among them is known that children who have the most social nature is the most often play while talking to himself. This shows, the talk itself is usually supported by social experience.