The book Babyhood, by Penelope Leach, states: “Many studies have been made of the sights which interest an infant most, the sounds which attract and hold his attention, the sensations he most clearly seeks to repeat.
ხშირ შემთხვევაში ბავშვი ამ ყველაფერს მისგან სწავლობს, ვინც მასზე ზრუნავს “.