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Lev Vygotsky (1896–1934) developed a sociocultural theory of cognitive development that stands in contrast to Piaget's emphasis on individual exploration. For Vygotsky, cognitive development is fundamentally a social process — children learn by interacting with more knowledgeable others within their cultural context. This lesson examines the zone of proximal development, scaffolding, the role of language, and comparisons with Piaget.
Key Definition: The Zone of Proximal Development (ZPD) is the gap between what a child can achieve alone (their current level of development) and what they can achieve with the help of a more knowledgeable other (MKO) — such as a parent, teacher, or peer.
Vygotsky (1978) argued that cognitive development does not happen through individual exploration alone (as Piaget suggested) but through guided interaction with others who have greater expertise.
The ZPD has three zones:
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