Object permanence is a key concept in developmental psychology, described by Jean Piaget. It refers to a child's ability to understand that an object continues to exist even when they can no longer see it.
A progressively built understanding
Before about 8 months, a baby who can no longer see an object often acts as if it has disappeared. This lack of active searching is not a lack of interest, but a normal stage of cognitive development.
Between 8 and 12 months, the child begins to look for an object hidden under a cloth or behind a screen, a sign that the mental representation of the object is stabilizing.
The "peek-a-boo" game
This simple game, present in many cultures, naturally accompanies this stage. It allows the child to experience the disappearance and reappearance of a familiar face in a safe and playful setting.
Why this stage matters
Object permanence is linked to the development of working memory and the child's future ability to anticipate events. It also prepares the ground for understanding a parent's temporary absence, a key issue for emotional security.
Fostering this discovery in daily life
No specific material is indispensable: a familiar object hidden under a cushion or a blanket is enough. Free play sessions on the floor, for example on a play mat, offer a stable and repeatable framework for this type of experimentation.
To extend this reflection, read our article on touch development or WHO recommendations on infant physical activity. For more information about the brand, see our about page.
