Ruth C. Sullivan family member with developmental disabilities. She retired from the Autism Services Center on November 1, 2007 at the age of 83. Sullivan assisted in the production of the 1988 movie "Rain Man" by serving as a consultant on autistic behavior, and Dustin Hoffman worked with Sullivan and her son Joseph, who has autism, when practicing for his role. Hoffman thanked her and Joseph in his Oscar speech. Sullivan has the last credit in the movie, and the extended DVD version features an interview with Joe. (Joe Sullivan was not the only inspiration for Hoffman's role; the role was originally written
Dustin Hoffman in the mindset of someone under severe emotional distress, rather than simply acting, Hoffman did not sleep for days at a time and let his body become disheveled and unhealthy. Goldman describes his inspiration for the novel: "What if someone close to you was something totally different from what you thought? In the story, Hoffman thinks his brother (Roy Scheider) is a businessman where the reality is that the man is a spy, who has been involved with the Nazi, Szell." However, Hoffman remembers a serious disagreement he had with Goldman, who also wrote the screenplay, about how the story