The children with moderate mental retardation (QI of 36 the 51) present a bigger slowness to learn to speak and to reach other goals of the development (p.ex., to seat). When they receive training and support adjusted, the adults with light retardation the moderate one obtain to live with a changeable degree of independence in the seio of the community. Some only require a small aid, while others need a much more important supervision, that is, people who only work with them. A child with serious mental retardation (QI of 20 the 35) cannot the same receive degree from learning that a child with a moderate mental retardation. The child with deep mental retardation (19 QI of or less) generally does not obtain to learn, to speak or to understand in an appreciable degree. The life expectancy of the child with mental retardation can be shorter, depending on the cause and the gravity of the same.

, The more in general serious the mental, lesser retardation the life expectancy. In accordance with a individualizado and global plan for a child with mental retardation, the participation of one intervention program, can help it in its physical and cognitivas difficulties. The genetic aconselhamento to provide to the parents with a child with mental retardation information and understanding on the cause with the problem. The aconselhamento the aid to evaluate the risk to have one another son with mental retardation. Amniocentese and the collection of sample of vilo corinico they are disgnostic examinations that can detect diverse fetais anomalies, also genetic anomalies and cerebral defects or of the spinal marrow. Amniocentese or the collection of vilo corinico is advisable for all the pregnant women with more than 35 years of age, therefore these present greater risk to generate a child with Syndrome of Down. The extremeone also can identify cerebral defects in the embryo.