For Winnicott (2000), the good evolution of the posterior periods of training to the development depends, mainly, of good results in the first contacts of the baby with the mother or cuidadora. During the three first months the sensorial system, the discrimination and the percipient device not yet are developed of the psychological point of view, and neither of the physicist, therefore the experiences of the baby if limit to the affection. The affective signals of the mother construct a communication form to the ual q obtain to provide total answers to the baby. This interaction between mother-son exerts a pressure that of the form to the infantile psiquismo, and the quality, the consistency, the certainty and stability of this affection is what it assures the normal psychic development of the baby. When a baby exists healthy and a conscientious woman of its desire of being mother, the interaction experience will almost always result, in a harmonious representation of the interaction. But the relation can be tense, conflituosa and then the body of the baby will express its inconformidade through somatizaes (Arago, 2004, p.214) or a chaotic interaction will be had that it will be able to result in one future psicopatologia. For Bowlby (1981), he is from this affective interaction mother-baby who if constitutes the first mental representations of the just-been born one, being the considered mother an attachment figure, therefore he is who through its contact, satisfies primary the necessity social of the baby. It is in the primary identification that the child establishes its condition of being, to exist.
This process implies the base of its mental health (Winnicott, 2000). Soon to the rising, the baby is somebody that needs maternagem so that it can exist. Arago (2004) backwards the idea the presence of the other, the constituent presence materna of psiquismo, that is, decisive condition for the psychic birth, in the measure where it recognizes the necessities of the baby and that it satisfies, them and it supports the baby, creating half of transit of pulsional satisfaction, giving proceeding and binding to it.