Children with ASD may have problems with imaginative play. They may not see a toy car as a car but rather as an object that rattles and makes funny patterns when the wheels are spun. This may account for part of the reason why such children have difficulty interacting with peers and joining in games with others.
Children with ASD typically have a narrow range of interests. They also may engage in repetitive, stereotyped body movements such as hand flicking, spinning or rocking. They may insist upon carrying certain objects around with them to help them feel secure. Need for sameness might extend to food. An individual with autism may have a preference or dislike certain colours, textures or temperatures of foods. Some individuals focus on certain topics or interests. The person might remain intrigued with one or two topics such as music or modes of transportation, and exhaust everyone who comes into contact with him about their knowledge in that area of interest.