Abstract

If a child is significantly retarded in his psychomotor development we suspect subnormal intelligence and speak of mental retardation. Several degree of mental retardation is seen. In very mild case there may be only minimal brain damage giving rise to slight delay only and less than optimal intelligence may only become obvious in school. Minimal brain damage, hardly recognized, but probably much more frequent than severe damage may be a much bigger burden to the society. Since there is no treatment of the cause in moderate retardation habit training, eating, walking, and putting on cloths