object permanence

Object permanence is the understanding that objects continue to exist even when they cannot be seen, heard, or otherwise sensed. For example, when a baby plays peek-a-boo, they initially believe the person disappears when covered. As they grow, they learn that the person is still there, even if hidden. This cognitive ability typically develops in infants around 8 to 12 months old and is crucial for their understanding of the world, influencing how they interact with their environment and develop attachment and trust in relationships. It is a fundamental aspect of human cognitive development.