There are a number of alternative theories to essentialism. An anthropologist, for example, believes that human behavior is greatly affected by the culture and environment in which he is raised.
Touch. Touch is one of the best-developed senses at birth -- and it's absolutely crucial to bonding. Cuddling your baby will make him feel warm and secure, as will swaddling because it re-creates the confined feeling of the womb. And, yes, babies explore through touch, and their preferred tool is their mouth.
The definition is plain and simple: they are activities that arouse or stimulate your baby's sense of sight, sound, touch, taste, and smell. Infant stimulation can help improve your baby's attention span, memory, curiosity, and nervous system development. In addition, stimulating your baby's senses will enable him to reach developmental milestones faster, as well as aid in the development of motor skills.