[ABSTRACT] This conference aims at exposing the mother sensibility and/or attachment figure influence in the shape of a firm attachment. This attachment predicts the ongoing cognitive, social and emotional development, as Ainsworth and Bowlby stand that attachment theory is a means of conceptualizing the human beings tendency to build strong affective links towards others.Esta conferencia se plantea exponer la influencia que ejerce la sensibilidad materna y/o de la figura de apego para la config