As a child gets older they have the ability to think to themselves . They can sit and read something to themselves or problem solve in their head . Verbal memory is a form of inner speech as in being able to recite the Gettysburg Address. Vygotsky felt that phonetics, and being able to dissect words was very important. The process of language development is like the process of intellectual development.
Children first learn to think in concrete groupings of objects, which are connected by facts.
First a child utters sound, which later is given a name that has meaning. The child links the object or desire to the gesture, sound, or word. This is further reinforced by the reaction of the other . Children go through a set of stages of development to develop concept . The child internalizes language.