Once upon a time there was a little baby named Liz. She has wonderful parents named Robert and Susan. Her parents are often in awe of the coordinated sequence of reflexes by which their baby gets food.
The new baby just started to cry, so the parents began to show her a new toy to try to get her to eat . With the rooting reflex, when something touches their cheek, babies turn toward that touch, open their mouth, and vigorously root for a nipple.
*ding dong* William James, Susan's father, came to the rescue. He just discovered that babies can tell you a lot- if you know how to ask. A parent must capitalize on what babies can do- gaze, suck, and turn their heads. So her father is showing her how he did it.
Then, he told his son in-law and daughter that habituation might occur, which might decrease in responding with repeated stimulation. When the baby saw it´s parents faces again she started to giggle and smile. People prefer sights and sounds that facilitate social responsivness.
The baby was 8 inches away from the face of her mother and was just gazing at her. Liz is so accustomed to this distance because it is the same distance between the infant's eyes and its mother's.
The baby loves the smell of her mother, because her brain's neural networks are stamped with the smell of Susan. Study shows that the smell preferences lasts. So the baby clings onto her mother, because she just loves the smell of her.