The concept of "zone of proximal development" was introduced by ______.

A) Piaget
B) Vygotsky
C) Freud
D) Baillargeon

Zone of Proximal Development

A concept developed by Vygotsky, describing the difference between what a learner can do without help and what they can achieve with guidance and encouragement.

Vygotsky

A Soviet psychologist known for his theory on social development of children and the concept of the Zone of Proximal Development.