Jean Piaget - Cognitive Development

Jean Piaget was a Swiss psychologist known for his theory of cognitive development, which outlines how children think and learn as they grow. He proposed four stages: 1. **Sensorimotor (0-2 years)**: Infants explore the world using their senses and actions. 2. **Preoperational (2-7 years)**: Children begin to use language and think symbolically but lack logical reasoning. 3. **Concrete Operational (7-11 years)**: They develop logical thinking about concrete events and understand the concept of conservation. 4. **Formal Operational (12 and up)**: Adolescents can think abstractly and reason about hypothetical situations. His work emphasizes that cognitive development is a process influenced by interaction with the environment.