Which concept is central to the sensorimotor stage, describing that objects continue to exist even when not seen?

Which concept is central to the sensorimotor stage, describing that objects continue to exist even when not seen?

• A. Object permanence
• B. Conservation
• C. Abstract thinking
• D. Reversibility

Answer: (A)

Object permanence is the idea being tested. In the sensorimotor stage, infants move from learning about the world through direct actions to beginning to form mental representations of objects. They start to realize that things still exist even when they can’t see them, hear them, or touch them. This shift is what underpins later memory and planning: if a toy is hidden, a child who has developed object permanence will keep looking for it or will search for it behind a cover rather than acting as if it vanished. Over time, infants move from reacting to visible things to understanding that unseen objects continue to exist. A classic sign of this development is how behavior changes when an object is hidden; earlier in the stage, they might not search or seem surprised when the object disappears, but later they will retrieve it or show anticipation that it will reappear. The other concepts—conservation, abstract thinking, and reversibility—become relevant at later stages. Conservation involves recognizing that quantity remains the same despite changes in appearance and comes with concrete operational thinking. Abstract thinking and reversibility are more tied to advanced reasoning that develops after the sensorimotor period.

Object permanence is the idea being tested. In the sensorimotor stage, infants move from learning about the world through direct actions to beginning to form mental representations of objects. They start to realize that things still exist even when they can’t see them, hear them, or touch them. This shift is what underpins later memory and planning: if a toy is hidden, a child who has developed object permanence will keep looking for it or will search for it behind a cover rather than acting as if it vanished.

Over time, infants move from reacting to visible things to understanding that unseen objects continue to exist. A classic sign of this development is how behavior changes when an object is hidden; earlier in the stage, they might not search or seem surprised when the object disappears, but later they will retrieve it or show anticipation that it will reappear.

The other concepts—conservation, abstract thinking, and reversibility—become relevant at later stages. Conservation involves recognizing that quantity remains the same despite changes in appearance and comes with concrete operational thinking. Abstract thinking and reversibility are more tied to advanced reasoning that develops after the sensorimotor period.