In Piaget’s cognitive development stages, a fully developed sense of "object permanence" appears at which stage?

Correct option is A

-Object permanence is the understanding that objects continue to exist even when they are not visible.
-According to Jean Piaget, this concept develops during the sensorimotor stage (birth to 2 years).
-Infants initially lack object permanence, meaning if an object is hidden, they act as if it has disappeared.
-By around 8–12 months, infants start showing early signs of object permanence.
-By 18–24 months, object permanence is fully developed, allowing toddlers to understand that objects exist independently of their perception.

Since object permanence is a hallmark of the sensorimotor stage, the correct answer is Option 1: The sensorimotor stage.

Information Booster:

Piaget’s Developmental Theory:
-Key Concept: Children construct knowledge through schemas (mental frameworks) via assimilation (fitting new info into existing schemas) and accommodation (modifying schemas for new info).

Stages of Cognitive Development:

Sensorimotor (0-2 years):
-Learn through senses and actions.
-Develop object permanence (understanding objects exist when out of sight).

Preoperational (2-7 years):
-Use language and symbols.
-Egocentric (struggle to see others’ perspectives).
-Lack conservation (understanding quantity remains the same despite shape changes).

Concrete Operational (7-11 years):
-Think logically about concrete events.
-Understand conservation, reversibility, and classification.

Formal Operational (12+ years):
-Think abstractly and hypothetically.
-Use deductive reasoning and problem-solving.