Final answer:
Piaget proposed a theory of cognitive development that consists of four stages: sensorimotor, preoperational, concrete operational, and formal operational.
Step-by-step explanation:
Piaget proposed a theory of cognitive development that consists of four stages: sensorimotor, preoperational, concrete operational, and formal operational.
Sensorimotor Stage: This stage occurs from birth to age 2. During this stage, children learn about the world through their senses and motor behavior.
Preoperational Stage: This stage occurs from ages 2 to 7. Children at this stage develop language and use symbols to represent objects and events, but they struggle with logical thinking and understanding other perspectives.
Concrete Operational Stage: This stage occurs from ages 7 to 11. Children at this stage can think logically about concrete events and can perform operations using concrete objects.
Formal Operational Stage: This stage occurs from age 11 to adulthood. In this stage, individuals can think logically about abstract ideas and hypothetical situations.