Definitions for "Object permanence"
In Piaget's terminology, the understanding that a person or object still exists when out of sight. (124)
The understanding that an object continues to exist even when it cannot be seen. go to glossary index
the knowledge that out-of-sight objects still exist, learned by infants at around 9 months.
Keywords:  stable, concept, remain, position, over
the concept that objects can remain stable in their position over time.