| Piaget's investigations into the origins of object permanence, number, geometry and time provide the foundations of Dr. Spelke's research. |
| They'd been going over the concepts of object permanence and keratin growth almost nightly, and she really thought Jim had it down by now. |
| A new parent might cherry-pick a lecture on infant development to learn about object permanence, the understanding that things you can no longer see still exist. |
| The child who is blind may demonstrate this early knowledge of object permanence when part of an object is touched by some part of his or her body. |
| The baby, like many a great philosopher, is highly dubious of object permanence, or even objectivity for that matter. |
