1 Autism is one of a group of developmental disorders that are characterized by severe behavioral abnormalities across the following primary areas of functioning: social development, communication, and behavior. While it is a complex syndrome that is not currently well understood, autism seems to affect the processing of information in the brain by somehow disrupting the organization of the nervous system and the connections within it. In addition, there appears to be a genetic component to autism. However, it is not clear whether the causes of autism are gene mutations or highly unusual combinations of typical genetic variants. What is clear is that autistic sufferers perceive and react to normal stimuli in ways that are not thought of as typical by most of society.
The word “component” in paragraph 1 is closest in meaning to