Speech and language are fundamental to children’s cognitive and behavioral development. It provides them an important tool to learn and communicate. It is also fundamental to their personality and sense of identity.
Behavioral development after the age of 2 expands on the earlier foundations of sensory discovery during infancy. By now, children have fully integrated all five of their senses, and have begun to master their physical dexterity and coordination. They are now full equipped to engage their natural curiosity with outside world and other human beings for the first time, outside the safety of their family environment.