Concept:Private speech is a key concept in Vygotsky’s sociocultural theory, referring to self-directed speech that guides a child’s actions and thinking.
Explanation:Lev Vygotsky introduced the term “private speech” in his sociocultural theory of cognitive development.
He argued that children use private speech aloud to plan, regulate, and monitor their own behavior.
This speech is not meant for communication with others; it helps the child solve problems and think through tasks.
Over time, private speech becomes internalized as inner speech or verbal thought.
Vygotsky believed that social interaction and language are central to cognitive growth.
The other theorists listed — Kohlberg (moral development), Erikson (psychosocial stages), and Piaget (cognitive stages) — did not coin this term.
Thus, the term “private speech” is uniquely associated with Vygotsky.
Answer:B. Vygotsky