Scientists had long noticed that about 80% of women, whether left-handed or right-handed, use the left arm to cradle the baby. Cradling the baby in this way is an instinctive behavior that until recently has not been explained in a reliable hypothetical way.
Researchers Victoria Bourne and Brenda Todd attribute this custom to a sophisticated process in which the brain hemispheres of mother and baby are involved.
If a baby is cradled by his mother's left side, reactions such as crying, yawning, laughing, etc., go directly to the mother's right cerebral hemisphere and this is where emotional gestures and expressions are precisely recognized facial As a consequence, the mother has faster and more intuitive access to her baby's needs. Even the language is in the right part of the brain, it controls the intonation and affectivity of the words. The result is that, when the mother speaks to her child while cradled on the left side, when the mother's voice reaches her left ear and therefore her right brain hemisphere (the most specialized in the affective aspects of sound ), a much greater emotional bond is created and for the baby, the mother's voice is like a musical instrument that relaxes and gratifies her.
Babysitters do not sound the same to the baby from the right side of the mother. They are theories but they are endorsed by several scientists, in any case, if it is true, it is gratifying to think that mothers do it by instinct.
