This study proposed the validation of vulnerability markers for dysfunctions in the socioemotional development of infants. We sought to build an instrument to capture the dysfunctions that condition their socio-emotional development process, which can be conceptualized as a process of continuity and change in the child’s social and emotional characteristics, characterized by the expression of emotion in social contexts, in social triggers of emotional expressions, and the social construction of emotional experience and understanding. Developmental disorders include a group of disorders characterized by impaired intellectual, physical, and socio-emotional competencies.