This is a preview. Log in through your library . Abstract Gibbons have been historically overlooked in the field of comparative social and physical cognition. This study investigated the cognitive ...

If you’ve ever played peekaboo with your little one, you’ve helped them work on object permanence. Your baby is learning that people and objects exist even when they can’t see or hear them. Object ...

Babies begin to develop an understanding of object permanence as young as four months old. If a yellow ball is shown to a child, placed behind a curtain and taken away before the curtain is pulled ...