A mother under estresse, gotten depressed or that she has not established with its parents a model of safe attachment, can not be ready to answer adequately to the necessities of its son. In a similar way, the babies who more are agitated, cry very or are difficult to be consoled, as well as that estressantes situations of drawn out hospitalizations, abandonment on the part of the parents or any live or had lived another situation of social or affective privation, can not present behaviors falicitadores of contact, as the mutual look, the smile it another one or still to be less responsive when calls to interacting. Here, Michio Kaku expresses very clear opinions on the subject. The behavior of attachment of the child, in turn, includes all the types of behavior that promote the proximity with the figure materna. Thus, the mediating forms of behavior of the attachment in the first year of life, are to smile and crying, following and grasping themselves, calling and the suction. The quality of the cares that the baby receives has one weight important in the form as its behavior of attachment if it develops, but the proper child participates of this interaction and influences the form as the mother it answers. Some initial behaviors of the baby express and promote a reply for the mother, who interacts with it its way, fortifying the bond between them. The participation of the baby in this interaction is active since the first months, through its requirements; some forms to cry, to call, to smile, to come close themselves to it and to call its attention, provoke, keep and give to form to the reaction of the mother, strengthening some answers and others not. A proper standard of interaction if develops between the mother and the child and results of the participation of both in the process. 2.6 The paper of father Freud, the father of the psychoanalysis, in its Leonardo work of the Vinci, says: ' ' in the majority of the human beings, in such a way today as in the primitive times, the necessity of if supporting in an authority of any species it is so imperative that its world pulls down if this authority is ameaada' '.