A retarded child should never feel that he is neglected or avoided in his family. Help them to be a part of family occasions and get together's. Never shut them in a room for life long. Let them live in touch with the outer world, take them for a walk or shopping. Teach siblings to see the retarded child as their own brother or sister. Never feel ashamed of a retarded child as he/she is also your child with all the rights for your love and care. But most importantly, never shame your retarded kid, allow him to be retarded.