Final answer:
Jean Piaget proposed 4 primary stages of child development: sensorimotor, preoperational, concrete operational, and formal operational.
Step-by-step explanation:
The 4 primary stages of child development proposed by Jean Piaget are:
- Sensorimotor stage: This stage lasts from birth to about 2 years old. During this time, children learn about the world through their senses and motor behavior.
- Preoperational stage: This stage occurs from about 2 to 7 years old. Children in this stage are able to use language and symbols to represent objects and concepts, but their thinking is still egocentric and lacks logical reasoning.
- Concrete operational stage: From about 7 to 11 years old, children in this stage develop the ability to think logically and perform mental operations, but their thinking is still limited to concrete events and they struggle with hypothetical situations.
- Formal operational stage: This stage begins around age 11 and continues into adulthood. In this stage, children are able to think abstractly, engage in complex problem-solving, and consider multiple perspectives.