Shah Rukh Khan on playing a character with Aspergers syndrome in My Name is Khan Shah rukh Khan is both excited and nervous about My Name is Khan,which,he believes,is his biggest film till date. Khan essays the role of Rizvan Khan who has Aspergers syndrome,a form of autism. In Aspergers syndrome,one half of the brain is more developed than the other, he says,So the person ends up thinking very logically as the emotional side is not completely developed. Thats the reason Rizvan has problems socialising and is afraid of crowds. In fact,people having Aspergers often find it difficult to show any emotion. Director Karan Johar and Khan spent several months researching people with Aspergers so that the actor could get the nuances right. I began reading a lot of books. The Curious Incident of the Dog in the Night-time is one that I read several times. I watched a lot of videos and met several people with Aspergers, says Khan. Johar spaced out the shooting so that the actor would have time to prepare himself for the scenes. It took a lot of retakes to get everything perfect and Im really thankful to Kajol and Karan for all their patience during the shoots, says Khan. The actor says that the movie is not a social-awareness film,But I hope that it will bring about awareness of the problems that these people face in leading a normal life, he says.