Both Piaget and Lev Vygotsky argue that learning results from social interaction. They believe that learning is a social process and that language plays a significant role in instruction and cognitive growth. Vygotsky argues that “learning awakens a variety of internal developmental processes that are able to operate only when the child is interacting with people in his environment and in cooperation with his peers.”This social interaction is necessary to create the zone of proximal development, but once the process is in tern alized, the child can u se the p rocess independently. To develop intellectual and moral autonomy, Piaget argues that it is necessary for children to exchange points of view and learn to defend and justify answers.