Final answer:
Piaget's cognitive development stages include the sensorimotor stage (0-2 years), preoperational stage (2-7 years), concrete operational stage (7-11 years), and formal operational stage (11 years to adulthood), each characterized by increasing cognitive skills and abilities.
Step-by-step explanation:
Cognitive Development Stages and Age Ranges
The age range associated with the four stages of cognitive development proposed by Jean Piaget are as follows:
- Sensorimotor stage: From birth to about 2 years old.
- Preoperational stage: From approximately 2 to 7 years old.
- Concrete operational stage: About 7 to 11 years old.
- Formal operational stage: From about 11 years to adulthood.
In the sensorimotor stage, infants explore the world through their senses and actions. During the preoperational stage, children start using symbols and engage in pretend play but cannot understand adult logic. In the concrete operational stage, children begin to think more logically about concrete events and understand operations such as conservation. Finally, the formal operational stage allows individuals to think abstractly and hypothetically.