He smiles a newborn? This question is still no clear answer. Some midwives say they've seen how just smiling children were born. Some scientists believe that a newborn smiling, but their smile is so different from the one form of movement of the facial musculature, which is called a smile, that we simply do not learn from them. As for the second infant, and especially the third month of life, here have all agreed to recognize the existence of a smile. However, not all incentives are equally likely cause a joyful expression of your baby. What will be the smiling child, is largely determined by his age, and and experience in communicating with the outside world smiles * First reaction is caused predominantly by stimulation: tickling, bright beam, light, sound. Then, the ability to cause the infant's smile becomes a human face, especially movement of the eyes. Finally, starting at 8 weeks of life almost for many children can watch a smile, which is caused by overlooking the bright toys.
Studying the causes of particular interest to the human face of infants, researchers found that a critical role in the development of this reaction has a certain property of the human person, namely the presence of high contrast on it a couple of incentives – the eye. It was found that if infants show a 2-3rd month of life Pictures of the points put on them, the children will smile these pictures as they smile at the man, and this reaction will depend on the number of pairs of points in the picture (there may be two, or maybe eight). But by the end of the 4th months of life, infants smile, not only about a person. At this age, so they are configured to communicate with him, crying that respond to the silent adult. Kids between the ages of 4.5 months and older are capable to cause person to contact with the imitation of those actions, which they expect to receive from an adult.