Piaget, Kohlberg and Vygotsky
Overview
These three theorists form the backbone of child development questions in HP TET and all CTET-pattern exams. Piaget explains **how children think** at different ages, Kohlberg explains **how moral reasoning develops**, and Vygotsky explains **how social interaction drives learning**. Together, they cover cognitive, moral, and socio-cultural dimensions of development.
Expect 3–5 direct questions from this topic in the Child Development and Pedagogy section. Questions typically ask you to identify stages, match age-ranges, apply concepts to classroom scenarios, or contrast the three theorists. Mastering the stage names, key terms (like "schema," "ZPD," "pre-conventional"), and their classroom implications is essential.
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Key Concepts
- **Piaget's Core Idea:** Children are not "mini-adults"; they construct knowledge actively through interaction with the environment. Cognitive development occurs in fixed, universal stages.
- **Schema, Assimilation, Accommodation:** A schema is a mental framework. Assimilation fits new information into existing schemas; accommodation changes schemas when new information doesn't fit. Equilibration is the balance between both.
- **Kohlberg's Core Idea:** Moral reasoning (not just moral behaviour) develops in stages. Higher stages involve more abstract principles like justice and universal rights.
- **Kohlberg built on Piaget:** Piaget studied moral development first (heteronomous vs. autonomous morality), and Kohlberg extended this into six detailed stages.
- **Vygotsky's Core Idea:** Learning is fundamentally social. Cognitive development results from guided interaction with more knowledgeable others (MKO)—parents, teachers, peers.
- **Zone of Proximal Development (ZPD):** The gap between what a child can do alone and what the child can do with guidance. Teaching should target this zone.
- **Scaffolding:** Temporary support given by a teacher or peer, gradually removed as the child masters the task. This is Vygotsky's main classroom application.
- **Language and Thought:** For Vygotsky, language is the primary tool of cognitive development; for Piaget, thought develops first and language follows.
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Key Facts and Definitions
### Piaget's Stages of Cognitive Development
| Stage | Age Range | Key Characteristics | |-------|-----------|---------------------| | Sensorimotor | 0–2 years | Learns through senses and actions; develops object permanence | | Pre-operational | 2–7 years | Symbolic play, egocentrism, centration, lack of conservation | | Concrete Operational | 7–11 years | Logical thinking about concrete objects; reversibility; conservation achieved | | Formal Operational | 11+ years | Abstract and hypothetical thinking; deductive reasoning |