High Quality Content by WIKIPEDIA articles! Newborn human infants cannot survive without a caregiver to provide food and protection, and will not thrive without other types of support as well. While infants have relatively few inborn behaviors—such as crying, rooting, and sucking—they also come with many behavioral systems ready to be activated through interaction with another person. In their first year babies` brains double in volume and their experiences will be hardwired in as a foundation on which to build their lives. The deep bond which babies form with their primary caregiver is called attachment, the foundation on which all other close, long-term relationships will be built. Parents can bond with their baby by touching, cuddling, eye contact, listening, and facial expressions, etc.