Lucy is a fifteen-year-old girl who is of normal intelligence; however, she is not good at reading other people’s emotions on their faces. She is clumsy and speaks in a mechanical monotone voice when she talks. Lucy is only interested in speaking Japanese and reading science fiction books. She is not interested in what other girls of her age are into such as music, boys, or makeup. She does not change her facial expression which is neutral or flat. She constantly wrings her hands and does other repeated ritualistic behaviors. What is Lucy’s diagnosis?