Things continue to exist even when we can’t see them, but until we’re old enough to understand that notion, it’s out of sight, out of mind. Object permanence is one of those things we figure out when ...

The work of Jean Piaget shaped our understanding of cognitive development in children, and it also gave us several tasks that we can use to study other animals. One classic issue studied by Piaget is ...

Peekaboo, a simple game, significantly impacts infants' early language development and brainpower by teaching object permanence. This game aids cognitive growth, helping babies understand that objects ...

Developmentalists have overlooked the fundamental problem of the real impermanence of things. The question of the development of the rational understanding of impermanence is as yet unposed, despite ...