Above all, the infant is intrigued by other humans ​ — their faces, their voices, their touch. 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.
सबसे बढ़कर, एक नवजात शिशु दूसरों को देखकर यानी उनके हाव - भाव, आवाज़ और स्पर्श महसूस करके उमंग से भर जाता है ।