How many stages are there in Jean Piaget's theory of cognitive development?

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Question

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DSSSB Assistant Teacher (Nursery) Official Paper (Held On: 19 Nov, 2019 Shift 3)

Answer 1

According to Piaget’s Cognitive Development Theory:

Cognitive development takes place at different rates at different stages of development.
Cognition develops through the interaction between the child and the environment.
Piaget’s theory focuses not only on understanding how children acquire knowledge but also on understanding the nature of the child’s intelligence.

Important Points

Piaget’s Four Stages of Cognitive Development:

Stages of Development	Characteristics
Sensorimotor (birth to 2 yr)	Experiences the world through senses and actions (looking, hearing, touching, mouthing, and grasping) Cognitive development begins with the baby's use of senses and movements Develops object permanence
Pre-Operational (2-7 yr)	Learns to use language to represent objects by images and words Classifies objects by a single feature. Thinking is ego-centric; has difficulty taking in the point of view of others. Develops symbolic thought
Concrete-Operational (7-11 yr)	Thinking logically about concrete events, performing concrete arithmetic operations Achieves conservation of number (age-6), mass (age-7), and weight (age-9) Develops operational thought
Formal Operational (11 yr and above)	Potential for more mature moral reasoning Becomes concerned with hypothetical, future, and ideological problems Develops abstract concepts

Hence, it could be concluded that four stages of cognitive development have been narrated by Jean Piaget.