One experiment was done on a mentally retarded person to try to raise his intelligence. The experiment worked, but after months, he came back to the state he orginally was at. In the book, Flowers for Algernon, by Daniel Keyes, this intelligence operation was done, and the patient was Charlie Gordon. After the operation, Charlie was very bright, but experienced loneliness, and physcological distress. Charlie was emotionaly upset because of his flashbacks from childhood, and because his intellegence grew faster then his emotional intellegence. ....