When speaking, they have little control over the pitch and volume of their voice and have a tendency to speak in a flat, monotonous voice.
             Autistic children also practice unusual or peculiar development of play. Customarily, they show dependence on a "special object" (Wing 11). This object can be anything from a matchbox car to a blanket, but the concept is always the same. Autistic children need to feel comfortable, so they have a need for sameness. Keeping something with them at all times keeps them content. They perform stereotypical behavior, repetitively, such as rocking back and forth in a chair. The purpose or effect of these behaviors is not understood, but these actions are typical to most autistic children. During play, children can become excessively hyper, which brings about severe behavior, often causing self-injury. For all of these reasons, autistic children have trouble interacting with their peers.
             Diagnosis of autism entails little more than simply observing the child in his or her natural environment. A doc
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