‘Babies and what they know’ explores the early development of children both before birth and during the first stage of childhood, focusing in particular on the importance of interaction. The child starts to learn even before it is born. After birth, babies are capable of learning a great deal from facial cues and the sound of language. They seem fascinated by the human face. This intrinsic interest in faces and eyes has been linked to how we acquire language. Studies on imitation, joint attention, and socio-moral expectations have shown that infants and toddlers start to develop psychological understanding early on.