Caregiver speech is also characterized by simple sentence structures and a lot of repetition. If the child is indeed in the process of working out a system of putting sound and words together, then these simplified models produced by the interacting adult may serve as good clues to the basic structural organization involved. Moreover, it has generally been observed that the speech of those regularly interacting with very young children changes and becomes more elaborate as the child begins using more and more language. Several stage in the early acquisition process have been identified.