The ability necessary to live with autonomy and independence in the community where if it inserts (to this ability also calls adaptativo behavior or adaptativo functioning). While the diagnosis of the cognitivo functioning normally is carried through by technician duly qualified (psychologists, neurologists, fonoaudilogos, etc.), already the adaptativo functioning must be object of comment and analysis on the part of the family, the parents and the educators who coexist the child. To get given regarding adaptativo behavior must look for to know what the child obtains to make in comparison with children of the same chronological age. Certain abilities are very important for the organization of this adaptativo behavior: The ability of daily life as to be dressed, to take bath, to eat. The communication abilities, as to understand what it is said and to know to answer. The social abilities with the colleagues, the members of the family and other adults and children. To diagnosis the Deficiency Intellectual, the professionals study the mental capacities of the person and its adaptativas abilities. These two aspects are part of the definition of common cognitivo delay to most of the scientists who if dedicate to the study of the intellectual deficiency.
The fact of if organizing support services the children and young with intellectual deficiency must provide one better understanding on the concrete situation of the child of who if she says that she has a cognitivo delay. After an initial evaluation, must be studied the potentialities and the difficulties that the child presents. She must also be studied the amount and nature of support that the child can need to be well in house, the school and the community. This global perspective of – us a realistic vision of each child. On the other hand, it also serves to recognize that ' ' viso' ' initial can, and many times must move or evolve.