Language Development Language has many functions. He claimed that the primary function of speech is communication. Communicative and egocentric speech are both social with different functions. It is connected with children's thinking because it helps them overcome difficulties. Contrary to Piaget's beliefs, Vygotsky theorized that the structural and functional qualities of egocentric speech, rather than dwindling, develop into speech that is different from external, social speech.
Egocentric speech develops and evolves into inner speech, then declines as inner speech appears.
He sought to discover the beginnings of new abilities. To study egocentric speech, Vygotsky organized his activities like Piaget, but added frustrations and difficulties. Vygotsky observed a relationship between egocentric speech and the activity the child is participating in. To observe the subjects in a variety of activities, obstacles were introduced to disrupt normal problem solving. In difficult situations, children's egocentric speech almost doubled.