Object permanence is a concept, gained in infancy, that objects continue to exist even when they are hidden from view. Likewise, Object Permanence refers to the understanding that physical objects continue to exist even though we cannot see them. According to Piaget, this does not develop until infants are eight (8) months old or more. Moreover. Object permanence is a cognitive capacity described by the developmental Psychologist Jean Piaget , which is initially absent in the infant, but subsequently develops. The infant is unable to store in memory a representation of an object that is removed from view. In essence, what is out of sight is "out of mind."
List of books: Object,permanence