Part 1 of Essay
A biologically based developmental disorder, lasts throughout one’s lifetime. Although it is most commonly accompanied with mental retardation, can be traced to all IQ levels. Sometimes referred to as a behavioral syndrome, is a collection of symptoms that characteristically occur together. was first diagnosed in 194 ....

Part 2 of Essay
.... of any group of symptoms is not so much universal as statistically possible(Levinson and Osterwell 7). The symptoms of can be consolidated into five major symptoms. The first symptom is a lack of responsiveness to other people, objects, and events. Disturbance of speech, language, perception, and nonverbal communication is the second major symptom. The third symptom of consists of a bizarre response to the environment such as a change in peculiar interest to animate and inanimate objects. The fourt ....